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INTERCHANGE TABLE 252

NEEDLE ROLLER BEARINGS (P.254-293) CAM FOLLOWERS (P.294-325) ROLLER FOLLOWERS (P.326-335)

INTERCHANGE TABLE STAINLESS STEEL 336

NEEDLE ROLLER BEARINGS (P.338-343) CAM FOLLOWERS (P.344-367) ROLLER FOLLOWERS (P.368-373)

INDEX

NEEDLE ROLLER BEARINGS 8

RNAF(W) (P.84-89) IR,IRZ (P.94-111)

NAF(W) (P.90-93)

RNA49, RNA59, RNA69, RNA48, NK

(P.52-69)

RNA49UU, RNA69UU, SEALED

(P.80-81)

NA49, NA59, NA69, NA48, NKI

(P.70-79)

NA49UU, NA69UU, SEALED

(P.82-83)

ROLLER FOLLOWERS 172

RNAST (P.182-183) NAST (P.184-185) NAST..ZZ (P.186-187) NART (P.188-189) NURT (P.190-191)

CAM FOLLOWERS 112

CF..B

(P.148-149)

CFH..AB

(P.154-157)

CFH..B

(P.162-163)

CFT..A

(P.168-169)

CFH..A

(P.150-153)

CFH

(P.158-161)

CFT

(P.164-167)

CR

(P.170-171)

New Product Introductions (P.114-115)

CFS..A

(P.130-131)

CF..A

(P.134-137)

NUCF

(P.142-143)

CF-SFU

(P.132-133)

CF..AB

(P.138-141)

CF

(P.144-147)

NEEDLE ROLLER BEARINGS STAINLESS STEEL 192

RNA49..M, NK..M (P.194-197) NA49..M, NKI..M (P.198-199) IR..M (P.200-203)

ROLLER FOLLOWERS STAINLESS STEEL 242

RNAST..M (P.244-245) NAST..M (P.246-247) NAST..MZZ (P.248-249) NART.. M (P.250-251)

CAM FOLLOWERS STAINLESS STEEL 204

CFH..MAB (P.226-229) CFH..MB (P.234-235) CFT..MA (P.240-241)

CFH..M (P.230-233) CFT..M (P.236-239)

CFS..MA

(P.206-207)

CF..MAB

(P.212-215)

CF..MB

(P.220-221)

CF..MA

(P.208-211)

CF..M

(P.216-219)

CFH..MA

(P.222-225)

INTERCHANGE

STAINLESS STEEL INTERCHANGE ROLLER FOLLOWERS STAINLESS STEEL CAM FOLLOWERS STAINLESS STEEL NEEDLE ROLLER BEARINGS STAINLESS STEEL ROLLER FOLLOWERS CAM FOLLOWERS NEEDLE ROLLER BEARINGS

STAINLESS STEEL

Technical information

NEEDLE ROLLER

BEARINGS (P.10-51)

CAM FOLLOWERS

(P.116-129)

ROLLER FOLLOWERS

(P.174-181)

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1 Bearing Life and Load Rating

1-1 Bearing life

Bearings are subjected to certain intensity of repeating stress on their track ring and rolling element even

during operation under proper loading, appropriate mounting and sufficient lubrication. The stress may

cause scaly damage formed on surface after certain time period due to its concentration at shallow vicinity

under the surface. This phenomenon is called flaking (peeling-off of surface). Phenomenon that causes

bearing to be unusable due to flaking caused by repeating cyclic stress under normal operating condition is

called “life” of the bearing. Generally, bearing life is defined by total number of rotation of the bearing until

flaking is generated on track surface. However, recognizing average life as criteria of bearing life is not

appropriate for actual selection of bearing since fatigue limit of material varies. It shall be practical to

consider the life guaranteed to most bearings (basic rating life) as a criterion. Phenomenon that bearing

becomes inoperative due to heat-seizure, wear, fracture, scoring are regarded as “failure” caused by

operating conditions and selection of bearing so that they and the life should be considered as different

phenomena.

1-2 Basic rating life

Basic rating life of bearing shall be defined as a total number of rotation that 90% of the group of the same

bearings can run without causing flaking due to rolling fatigue when they are operated under the same

conditions.

In the case of rotation in certain constant speed, the basic rating life can be expressed in a total rotation time

as well.

1-3 Basic dynamic load rating

A given static radial load under which a bearing theoretically endures basic rating life of one million rotations

is referred to as a basic dynamic load rating.

1-4 Dynamic equivalent load

Dynamic equivalent radial load

A load that is virtually applied to the center of a bearing under which to obtain a life equivalent to that when

both radial load and axial load are subjected to the bearing at the same time is called the dynamic

equivalent radial load. In the case of needle bearing, its radial type is capable for loading radial load only so

that just a radial load will be applied.

1-5 Bearing life calculation formula

The following relationship is applied to basic rating life, basic dynamic load rating and dynamic equivalent

load of bearing.

L 10 = ( Cr / Pr )10/3 · · · · · · · · · · · · · · · · · · · · (1.1)

L10 : Basic rating life 106

rotation

Cr : Basic dynamic load rating N

Pr : Dynamic equivalent radial load N

Basic rating life time can be expressed as total rotation time with given rotation per minute by the following

formula.

L h = 106 L 10 / 60n = 500 f h

10/3 · · · · · · · · · · · (1.2)

f h = fn Cr / Pr · · · · · · · · · · · · · · · · · · · · · · · · (1.3)

f n = ( 33.3 / n )3/10 · · · · · · · · · · · · · · · · · · · · (1.4)

Lh : Basic rating life expressed in hour h

n : Rotation per minute rpm

fh : Bearing life factor

fn : Speed factor

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1-6 Operating conditions and bearing life factor of bearing

Operating machinery and demanded life

Bearings should be selected based on setting up demanded life in accordance with operating machinery

and operating condition.

Demanded life is determined by endurance duration for operating machinery and reliable operating periods.

Table-1 indicates demanded life that can be a typical reference.

Table-1 Operating condition and demanded life time factor (reference)

Operating conditions

Bearing life factor f h

~3 2~4 3~5 4~7 6~

Short duration or

occasional operation

Home appliance

Electrical tools

Agricultural

machinery

Office equipment

Short duration or

occasional operation,

but necessity for ensuring reliable operation

Medical equipment

Measuring

instrument

Home air

conditioning

Construction

machinery

Crane

Elevator Crane (sheave

wheel)

Long duration operation but not full time

Small size

motor

General gear

system

Woodworking

machinery

Passenger car

Machine tools

Factory general

purpose motor

Crusher

Important gear

system

Calendar roller for

rubber and plastic

Printing machine

Continuous operation

over eight hours a day

Rolling machine

Escalator

Conveyer

Centrifugal

separator

Air conditioner

Large size motor

Compressor,

pump

Mine hoist

Press machine

Pulp,

papermaking

machine

Operate 24 hours a

day and must be non

stop without accident

Water-work

system

Power generator

system

1-7 Corrected rating life

Formula for basic rating life described above is applied to bearings whose reliability is 90%, whose material is

for general purpose bearing and are manufactured in general quality standard as well as those operated

under standard operating conditions. Corrected rating life should be calculated using correction factor a 1, a 2

and a 3 in the case that the reliability is over 90% or that life needs to be obtained for special bearing

properties or for special operating conditions.

L na = a 1 a 2 a 3 L 10 · · · · · · · · · · · · · · · · · · · · · (1.5)

Lna : Adjustment rating life 106

rotation

a1 : Reliability factor

a2 : Bearing special properties factor

a3 : Operating conditions factor

1-7-1 Reliability factor

Reliability factor a 1

This is the bearing life corrected factor for reliability (100-n) % when probability of failure is n %. Value of the

reliability factor a 1 is shown in Table-2.

Table-2 Reliability factor a 1

Reliability (%) L n a 1

90 L 10 1

95 L 5 0.62

96 L 4 0.53

97 L 3 0.44

98 L 2 0.33

99 L 1 0.21

1-7-2 Bearing special properties factor

Bearing special properties factor a 2

Bearing special properties factor a 2 is used for adjusting variation of properties concerning life in the case that

material type, quality or manufacturing process is special. This factor shall be a 2=1 for standard material and

manufacturing method. It can be a 2 > 1 when special modified material or manufacturing method is used

due to improved quality of bearing material or progress of manufacturing technology.

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1-7-3 Operating conditions factor

Operating conditions factor a 3

This is a factor to adjust impact of operating conditions of bearing, especially effect of lubrication to fatigue life.

Bearing life is essentially a fatigue phenomenon of surface layer which is subjected to repeating cyclic load.

Therefore, this factor will be a 3=1 under ideal lubrication condition when rolling element and track surface are

completely isolated by oil film and surface failure can be ignored. Under poor lubrication condition such as low

lubricant viscosity or under significantly slow rotation speed of rolling element, it would be a 3 < 1.

On the contrary, it can be a 3 > 1 under especially excellent lubrication condition. Generally, the bearing

special properties factor a 2 can not be set to value exceeding 1 when a 3 < 1.

1-8 Adjustment of Basic Dynamic Load Rating for temperature and

hardness factors

1-8-1 Temperature factor

While operating temperature of bearing is individually defined in accordance with material and structure,

bearing is capable to be used at temperatures higher than 150 °C by applying special treatment for thermal

resistance. However this will cause reduction of basic dynamic load rating as a result of reduction of

permissive contact stress. Basic dynamic load rating with consideration for temperature increase is given by

the following formula.

C1 = f 1 Cr · · · · · · · · · · · · · · · · · · · · · · · · · · · (1.6)

C1 : Basic dynamic load rating with consideration for temperature increase N

f1 : Temperature factor (Refer to Figure-1)

Cr : Basic dynamic load rating N

0

0.2

0.4

0.6

0.8

1

150 170 190 210 230 250

Temperature [℃]

Temperature factor f1

Figure-1

1-8-2 Hardness factor

The raceway surface should be HRC58 to 64 in the case of using shaft or housing as raceway instead of

bearing inner ring or outer ring respectively. Basic dynamic load rating may be reduced in the case the

surface hardness is lower than HRC58. Basic dynamic load rating with consideration for surface hardness is

given by the following formula.

C2 = f2 Cr · · · · · · · · · · · · · · · · · · · · · · · · · · · (1.7)

C2 : Basic dynamic load rating with consideration for hardness N

f2 : Hardness factor (Refer to Figure-2)

Cr : Basic dynamic load rating N

0

0.2

0.4

0.6

0.8

1

60 50 40

Hardness [HRC]

Hardness factor f2

Figure-2

1-9 Basic static load rating

Basic static load rating is specified as a static load which corresponds to contact stress indicated in the table

below at rolling element and the center of contact of track that are subjected to the maximum load. Total

permanent deformation of rolling element and track occurred by the contact stress may be approximately

0.0001 times of diameter of the rolling element.

Type of bearing Contact stress MPa

Roller bearing 4000

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1-10 Static equivalent load

A load that is virtually applied to the center of a bearing under which to obtain a contact stress equivalent to

the maximum contact stress that occurs at contact surface between rolling element and track, when both

radial load and axial load are subjected to the bearing at the same time, is called a static equivalent load.

In the case of needle bearing, its radial type is capable for loading radial load only so that just a radial load

will be applied.

P0r = Fr · · · · · · · · · · · · · · · · · · · · · · · · · · · · (1.8)

P0r ： Static equivalent radial load N

1-11 Static safety factor

Although permissive limit of static equivalent load is typically regarded as basic static load rating, its limit

shall be set with consideration for safety since conditions required for bearings broadly vary. The static safety

factor fs is given by the following formula (1.9). Table-3 shows its typical values.

C0r

P0r

f S = ···························· (1.9)

fS ： Safety factor

C0r ： Basic static load rating N

Table-3 Static safety factor

Operating conditions of bearing f s

With high rotation accuracy

With impact load ≧ 3

With standard rotation accuracy ≧ 1.5

With standard rotation accuracy

and low speed ≧ 1

1-12 Permissive rotation speed

Increasing bearing rotation speed may cause a rise in bearing temperature due to abrasion heat generated

inside of the bearing, which results in failure with heat-seizure. A threshold rotation speed up to which long

duration of safe operation is enabled is referred to as a permissive rotation speed.

Permissive rotation speed varies depending on type, size and load of bearing, lubrication method and its

radial clearance. It is an experimental value at which operation is enabled without causing heat generation

exceeding certain limit.

２ Bearing load

2-1 Load factor

Operation in actual machinery is subjected to a load larger than theoretical axial directional load due to

vibration and impact shock.

Actual load is given by calculation of load applied to axes system using load factor shown in Table-4.

K = f w · Kc · · · · · · · · · · · · · · · · · · · · · · · · · · · (2.1)

K ： Actual load applied to axes system N

Kc ： Theoretical calculation value N

fw ： Load factor (Table-4)

Table-4 Load factor

Degree of load Examples f w

Smooth motion without any

impacts

Air conditioner, measurement instruments, office

equipment

1 ~1.2

With standard rotation Gear box, vehicle, papermaking machine 1.2~1.5

Operation with vibration and

impact shock

Rolling machine, construction machinery, crusher 1.5~3

2-2 Load distribution

Load distribution to bearing

Axes system is assumed as a static beam supported by bearings in order to distribute load acting on the axes

system to the bearings. Table-5 shows calculation example of load distribution.

Table-5 Example of calculation of load distribution

Examples Load calculation

ab c

a + b + c

W1(b + c) + W2c F1 =

a + b + c

W1a + W2(a + b) F2 =

ab c

b + c

W1(a + b + c) + W2c F1=

b + c

W2b − W1a F2 =

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2-3 Load transmission

Bearing loads in belt or chain transmission

The force acting on pulley or sprocket wheel when power is transmitted by a belt or chain is given by the

following formula.

T = 9550P/N · · · · · · · · · · · · · · · · · · · · · · · (2.2)

Ft = 2000･T/d ······················ (2.3)

T ： Torque acting on pulley or sprocket wheel N･m

Ft ： Effective force transmitted by belt or chain N

P ： Transmitted power kW

N ： Rotation per minute rpm

d ： Effective diameter of pulley or sprocket wheel mm

Load F r acting on pulley shaft is given by multiplying effective transmitted force F t by belt factor f b shown in

Table-6 in the case of belt transmission.

Fr = f b Ft ··························· (2.4)

Table-6 Belt factor

Type of belt f b

V belt 2 ~2.5

Flat belt (with tension pulley) 2.5~3

Flat belt (without tension pulley) 4 ~5

In the case of chain transmission, load acting on sprocket wheel shaft is given by the formula (2.4) as same

as that of belt transmission using value between 1.2 and 1.5 as chain factor corresponding to f b.

Bearing loads in gear transmission

In the case of power transmission by gear, methods of calculation vary depending on the type of gear since

force acting on the gear is divided into radial load and axial load and their direction and ratio vary depending

on the type of gear. In the case of the simplest flat gear, direction of load is radial load only and it is given by

the following formula.

T = 9550P/N · · · · · · · · · · · · · · · · · · · · · · · (2.5)

Ft = 2000･T/d · · · · · · · · · · · · · · · · · · · · · · (2.6)

Fr = Ft･tan α · · · · · · · · · · · · · · · · · · · · · · · · (2.7)

Fc = Ft

2

+ Fr

2 · · · · · · · · · · · · · · · · · · · · · · · · (2.8)

T ： Torque acting on gear N･m

Ft ： Force in tangent direction of gear N

Fr ： Force in radial direction of gear N

Fc ： Combine force acting perpendicular to gear N

P ： Transmitted power kW

N ： Rotation per minute rpm

d ： Pitch circle diameter of drive gear ｍｍ

α ： Pressure angle of gear

Figure-3

Value that is given by multiplying theoretical load by gear factor f z in Table-7 shall be used as actual load

since degree of vibration and impact shock affecting the theoretical load obtained by the formula above

varies depending on the type of gear and accuracy of gear surface finish.

F = f z Fc · · · · · · · · · · · · · · · · · · · · · · · · · · · · (2.9)

Table-7 Gear factor

Type of gear f z

Precision gear

(Both of pitch error and geometric error is 0.02 mm or less) 1.05~1.1

Ordinary machined gear (Both of pitch error and geometric

error is between 0.02 mm and 0.1 mm) 1.1 ~1.3

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Average load

Average load F m which is converted so as to apply even life to each bearing may be used in the case that

load acting on bearing is unstable and changes in various cycle.

(1) Fluctuating step load

Average load F m is given by formula (2.10) in the case that bearing load F 1, F 2, F 3… is applied with rotation

speed and operation duration of n1, n2, n3… and t 1, t 2, t 3… respectively.

Fm = [ (F 1

10/3 ・n1 t 1 + F 2

10/3 ・n2 t 2 + … + F n

10/3 ・nn t n ) /

(n1 t 1 + n2 t 2 + … + nn t n )]3/10 · · · · · · · · · · · · · · · · · · · ·(2.10)

Figur-4 Load changing in stepping increment

(2) Continuously fluctuating load

Average load is given by formula (2.11) in the case that the load can be expressed in function F(t) of time t

with cycle t 0.

3/10 0

0

t 10/3

0

m (t) d l = ³

t

F

t

F ················· (2.11)

Figur-5 Load changing in function of time

(3) Roughly linear load

Average load F m is approximately given by formula (2.12).

3

min 2 max

m

F F F + = · · · · · · · · · · · · · · · · · · · · · (2.12)

Figur-6 Load changing in linear increase

(4) Sinusoidal fluctuating load

Average load F m is approximately given by formula (2.13) and formula (2.14).

(a): F m=0.75F max · · · · · · · · · · · · · · · · · · · · (2.13)

(b): F m=0.65F max · · · · · · · · · · · · · · · · · · · · (2.14)

（ａ） （ｂ）

Figur-7 Load changing in sinusoidal wave fluctuation

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３ Bearing accuracy

3-1 Accuracy

Dimensional accuracy, geometrical accuracy and rotation accuracy of bearing are specified in ISO standards

and JIS B 1514 (Rolling bearings - Tolerances of bearings).

Accuracy class of needle bearing is specified by four classes from lowest class 0 to 6th, 5th and 4th class in

the highest. While high accuracy bearing in 5th or 4th class may be used in application for the case high

rotation accuracy is demanded or high speed rotation, class 0 is used in most of general purpose application.

Table-8 Accuracy of inner ring Unit: µm

d

Nominal

bearing bore

diameter

(mm)

Δ dmp

Deviation of mean bore diameter in a single

plane

Vdsp

Variation of bore diameter in a single plane

Vdmp

Variation of mean bore

diameter in a single plane

Kia

Radial runout of inner ring

of assembled bearing

Sd

Reference face runout

with bore (Inner ring )

Δ Bs

Deviation of a single

inner ring width

VBs

Variation of inner rings width

d

Nominal

bearing bore

diameter

(mm) 0 6 5 4 0 6 5 4 0 6 5 4 0 6 5 4 5 4 0, 6 5, 4 0 6 5 4

Over Incl. high low high low high low high low max. max. max. max. high low high low max. Over Incl.

2.51) 10 0 -8 0 -7 0 -5 0 -4 10 9 5 4 6 5 3 2 10 6 4 2.5 7 3 0 -120 0 -40 15 15 5 2.5 2.51) 10

10 18 0 -8 0 -7 0 -5 0 -4 10 9 5 4 6 5 3 2 10 7 4 2.5 7 3 0 -120 0 -80 20 20 5 2.5 10 18

18 30 0 -10 0 -8 0 -6 0 -5 13 10 6 5 8 6 3 2.5 13 8 4 3 8 4 0 -120 0 -120 20 20 5 2.5 18 30

30 50 0 -12 0 -10 0 -8 0 -6 15 13 8 6 9 8 4 3 15 10 5 4 8 4 0 -120 0 -120 20 20 5 3 30 50

50 80 0 -15 0 -12 0 -9 0 -7 19 15 9 7 11 9 5 3.5 20 10 5 4 8 5 0 -150 0 -150 25 25 6 4 50 80

80 120 0 -20 0 -15 0 -10 0 -8 25 19 10 8 15 11 5 4 25 13 6 5 9 5 0 -200 0 -200 25 25 7 4 80 120

120 150 0 -25 0 -18 0 -13 0 -10 31 23 13 10 19 14 7 5 30 18 8 6 10 6 0 -250 0 -250 30 30 8 5 120 150

150 180 0 -25 0 -18 0 -13 0 -10 31 23 13 10 19 14 7 5 30 18 8 6 10 6 0 -250 0 -250 30 30 8 5 150 180

180 250 0 -30 0 -22 0 -15 0 -12 38 28 15 12 23 17 8 6 40 20 10 8 11 7 0 -300 0 -300 30 30 10 6 180 250

250 315 0 -35 0 -25 0 -18 ̶ ̶ 44 31 18 ̶ 26 19 9 ̶ 50 25 13 ̶ 13 ̶ 0 -350 0 -350 35 35 13 ̶ 250 315

1）2.5 mm is included in this dimension group

Table-9 Accuracy of outer ring Unit: µm

D

Nominal

bearing

outside

diameter

(mm)

Δ Dmp

Deviation of mean outside diameter in a single plane

VDsp

Variation of outside

diameter in a single plane

VDmp

Variation of mean outside

diameter in a single plane

Kea

Radial runout of outer

ring of assembled bearing

SD

Variation of outside

surface generatrix

inclination with face

(outer ring)

Δ Cs

Deviation of a single

outer ring width

VCs

Variation of outer ring width

D

Nominal

bearing

outside

diameter

0 6 5 4 0654 0 6 5 4 0 6 5 4 5 4 0, 6, 5, 4 0 6 5 4 (mm)

Over Incl. high low high low high low high low max. max. max. max. high low max. Over Incl.

2.52) 6 0 -8 0 -7 0 -5 0 -4 10 9 5 4 6 5 3 2 15 8 5 3 84

Depending on tolerance

of Δ Bs for D of the same

bearing.

Depending on

tolerance of VBs

for D of the

same bearing.

5 2.5 2.52) 6

6 18 0 -8 0 -7 0 -5 0 -4 10 9 5 4 6 5 3 2 15 8 5 3 8 4 5 2.5 6 18

18 30 0 -9 0 -8 0 -6 0 -5 12 10 6 5 7 6 3 2.5 15 9 6 4 8 4 5 2.5 18 30

30 50 0 -11 0 -9 0 -7 0 -6 14 11 7 6 8 7 4 3 20 10 7 5 8 4 5 2.5 30 50

50 80 0 -13 0 -11 0 -9 0 -7 16 14 9 7 10 8 5 3.5 25 13 8 5 8 4 6 3 50 80

80 120 0 -15 0 -13 0 -10 0 -8 19 16 10 8 11 10 5 4 35 18 10 6 9 5 8 4 80 120

120 150 0 -18 0 -15 0 -11 0 -9 23 19 11 9 14 11 6 5 40 20 11 7 10 5 8 5 120 150

150 180 0 -25 0 -18 0 -13 0 -10 31 23 13 10 19 14 7 5 45 23 13 8 10 5 8 5 150 180

180 250 0 -30 0 -20 0 -15 0 -11 38 25 15 11 23 15 8 6 50 25 15 10 11 7 10 7 180 250

250 315 0 -35 0 -25 0 -18 0 -13 44 31 18 13 26 19 9 7 60 30 18 11 13 8 11 7 250 315

2）2.5 mm is included in this dimension group

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Table-10 Permissive tolerance of chamfer Unit: mm

rs min

d

Nominal bearing bore diameter Radial direction Axial direction

Over Incl. rs max

0.15 ̶ ̶ 0.3 0.6

0.2 ̶ ̶ 0.5 0.8

0.3 ̶

40

40

̶

0.6

0.8

1

1

0.6 ̶

40

40

̶

1

1.3

2

2

1 ̶

50

50

̶

1.5

1.9

3

3

1.1 ̶

120

120

̶

2

2.5

3.5

4

1.5 ̶

120

120

̶

2.3

3

4

5

2

̶

80

220

80

220

̶

3

3.5

3.8

4.5

5

6

2.1 ̶

280

280

̶

4

4.5

6.5

7

2.5

̶

100

280

100

280

̶

3.8

4.5

5

6

6

7

3 ̶

280

280

̶

5

5.5

8

8

4 ̶ ̶ 6.5 9

* Remark Although no particular shape is specified for chamfer surface, its outline in axial plane must be within virtual arc of rs min radius that

is tangent to slope of inner ring and inner diameter face of bearing, or tangent to side of outer ring and bearing outer diameter. (Reference

diagram)

Side surface of inner ring or

side surface of outer ring

(Radial direction)

Bearing bore diameter surface or

outer diameter surface

(Axial direction)

r

r

r

r

r

Table-11 Tolerance of minimum value of diameter of inscribed circle to roller Unit: µm

Fw (mm)

Inscribed circle diameter

Dimension difference of Δ Fw min

Variation of minimum value of diameter of inscribed

circle to roller

Over Incl. high low

3 6 +18 +10

6 10 +22 +13

10 18 +27 +16

18 30 +33 +20

30 50 +41 +25

50 80 +49 +30

80 120 +58 +36

120 180 +68 +43

180 250 +79 +50

250 315 +88 +56

This means diameter of roller that achieves zero radial clearance in at least one radial direction in the case of using cylindrical roller instead of

bearing inner ring.

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3-2 Measurement method

Measurement of single bore diameter

Table-12 Bearing bore diameter

Type and definition of accuracy

dmp

Mean bore diameter in a

single plane

Arithmetic mean of maximum and minimum value of the single bore

diameters in a single radial plane.

2

dsp max + dsp min dmp =

dsp: Single inner diameter in a particular radial plane.

Δ dmp

Deviation of mean bore

diameter in a single plane

Difference between the mean bore diameter and nominal more diameter.

Δ dmp=ddmp-d

d： Nominal bearing bore diameter.

Vdsp

Variation of single bore

diameter in a single plane

Difference between maximum and minimum value of single bore diameter in single radial plane.

Vdsp=dsp max-dsp min

Vdmp

Variation of mean bore

diameter in a single plane

Difference between maximum and minimum value of the mean bore

diameter in a single plane in individual track ring basically with cylindrical

inner diameter face.

Vdmp=dmp max-dmp min

Δ ds

deviation of single bore

diameter

Difference between single bore diameter and nominal bore diameter.

Δ ds=ds-d

ds

： Distance between two parallel straight lines which are tangent to

intersecting line of actual bore diameter face and radial plane.

Measurement range

Method of measurement of bearing bore diameter

Zero the gauge indicator to the appropriate size using gauge blocks or a master ring.

In several angular directions and in a single radial plane, measure and record the largest and the smallest

single bore diameters, dsp max and dsp min.

Repeat angular measurements and recordings in several radial planes to determine the largest and the

smallest single bore diameter of an individual ring, ds max and ds min.

Table-13 Measurement area limit Unit: mm

r s min

a Over or less

- 0.6 r s max + 0.5

0.6 - 1.2 × r s max

Measurement of single outside diameter

Table-14 Bearing outer diameter

Type and definition of accuracy

Dmp

mean outside diameter

in a single plane

Arithmetic mean of maximum and minimum value of the single outside

diameters in a single radial plane.

2

Dsp max + Dsp min Dmp=

Dsp： Single outside diameter in a particular radial plane

Δ Dmp

Deviation of mean outside diameter in a single

plane

Difference between the mean outside diameter in a single plane of

cylindrical outside diameter face and nominal outside diameter.

Δ Dmp=Dmp-D

D：Nominal bearing outside diameter.

VDsp

deviation of single outside diameter

Difference between maximum and minimum value of the mean outside

diameter in a single radial plane.

VDsp=Dsp max-Dsp min

VDmp

Variation of mean outside diameter in a single

plane

Difference between maximum and minimum value of the mean outside

diameter in a single plane in individual track ring with basically cylindrical

outer diameter face.

VDmp=Dmp max-Dmp min

Δ Ds

deviation of single bore

diameter

Difference between single outside diameter in basically cylindrical outside diameter face and nominal outside diameter.

Δ Ds=Ds-D

Ds

： Distance between two parallel straight lines which are tangent to

intersecting line of actual outer diameter face and radial plane.

Measurement range

Method of measurement of bearing outer diameter

Zero the gauge indicator to the appropriate size using gauge blocks or a master.

In several angular directions and in a single radial plane, measure and record the largest and the smallest

single outside diameters, Dsp max and Dsp min.

Repeat and record measurements in several radial planes to determine the largest and the smallest single

outside diameter of an individual ring, Ds max and Ds min.

28 NOSE SEIKO CO.,LTD NOSE SEIKO CO.,LTD 29

Measurement of single bore diameter of rolling element complement

Table-15 Measurement of single bore diameter of rolling element complement

Type and definition of accuracy

Fws

Nominal bore diameter

of rolling element complement

Distance between two parallel straight lines which are tangent to intersecting line

of inscribed circle of rolling element complement and radial plane in radial bearing

without inner ring.

Fws min

Minimum nominal bore

diameter of rolling element complement

Minimum nominal bore diameter of rolling element complement in radial bearing

without inner ring.

Remark Minimum nominal bore diameter of rolling element complement is

diameter of cylinder whose radial clearance becomes zero in at least one

radial direction.

Measurement load

Master gauge

Measurement of single bore diameter of rolling element complement

Fasten the master gauge to a surface plate.

Position the bearing on the master gauge and apply the indicator in the radial direction to the approximate

middle of the width on the ring outside surface.

Measure the amount of movement of the outer ring in the radial direction by applying sufficient load on the

outer ring in the same radial direction as that of the indicator and in the opposite radial direction.

Record indicator readings at the extreme radial positions of the outer ring. Rotate the bearing and repeat the

measurement in several different angular positions to determine the largest and the smallest readings, F ws max

and F ws min.

Table-16 Radial measurement load

Fw

mm

Measurement load

N

Over Incl. min.

―

30

50

80

30

50

80

―

50

60

70

80

Measurement of single inner ring width (or outer ring width)

Table-17 Measurement of single inner ring width (or outer ring width)

Type and definition of accuracy

Δ Bs

Deviation of single inner

ring width

Difference between single inner ring width and nominal inner ring width.

Δ Bs=Bs-B

VBs

Variation of inner ring

width

Difference between maximum and minimum value of the single bore

diameter width in each inner ring.

VBs=Bsmax-Bs min

Δ Cs

Deviation of single outer

ring width

Difference between single outer ring width and norminal outer ring

width

Δ Cs=Cs-C

VCs

Variation of outer ring

width

Difference between maximum and minimum value of the single outer

ring width in each outer ring.

VCs=Cs max-Cs min

Measurement of single inner ring width (or outer ring width)

Zero the gauge indicator to the appropriate height from the reference surface using gauge blocks or a

master.

Support one face of the ring on three equally spaced fixed supports of equal height and provide two

suitable radial supports on the bore surface set at 90° to each other to center the ring.

Position the indicator against the other face of the ring opposite one fixed support.

Rotate the ring one revolution and measure and record the largest and the smallest single ring width, B s max

and B s min (Cs max and Cs min).

30 NOSE SEIKO CO.,LTD NOSE SEIKO CO.,LTD 31

Measurement of perpendicularity of inner ring face with respect to the bore (Sd)

Use a precision arbor having a taper of approximately 1:5000 on diameter.

Mount the bearing assembly on the tapered arbor and place the arbor between two centres so that it can

be accurately rotated.

Position the indicator against the reference face of the inner ring at a radial distance from the arbor axis of

half the mean diameter of the face.

Take indicator readings while rotating the inner ring one revolution.

Mean diameter of inner ring

datum surface

Rotate the inner ring one revolution

Measurement of perpendicularity of inner ring face with respect to the bore

Measurement of perpendicularity of outer ring outside surface with respect to the face (SD)

Support the reference face of the outer ring on a surface plate leaving the inner ring, if an assembled

bearing, free. Locate the outer ring cylindrical outside surface against two supports set at 90° to each other

to centre the outer ring.

Position the indicator directly above one support. The indicator and the two supports are axially located at

the extremes of the measurement zone.

Take indicator readings while rotating the outer ring one revolution.

Measurement of perpendicularity of outer ring outside

surface with respect to the face

Measurement of radial runout of inner ring (Kia)

Use a precision arbor having a taper of approximately 1:5000 on diameter.

Mount the bearing assembly on the tapered arbor and place the arbor between two centres so that it can

be accurately rotated.

Position the indicator against the outside surface of the outer ring as close as possible to the middle of the

outer ring raceway.

Hold the outer ring to prevent rotation but ensure its weight is supported by the rolling elements. Take

indicator readings while rotating the arbor one revolution.

Rotate the arbor one revolution

Measurement of radial runout of inner ring

Measurement of radial runout of outer ring (Kea)

Use a precision arbor having a taper of approximately 1:5000 on diameter.

Mount the bearing assembly on the tapered arbor and place the arbor between two centres so that it can

be accurately rotated.

Position the indicator against the outside surface of the outer ring as close as possible to the middle of the

outer ring raceway.

Hold the inner ring stationary. Take indicator readings while rotating the outer ring one revolution.

Rotate the outer ring one revolution

Measurement of radial runout of outer ring

32 NOSE SEIKO CO.,LTD NOSE SEIKO CO.,LTD 33

４ Internal clearance of bearing

4-1 Radial internal clearance of bearing

Radial internal clearance of bearing means a displacement of either inner ring or outer ring, which is free

side, when the specified measurement load is applied to it alternatively in radial direction while locking the

opposite component in the condition before mounting the bearing on shaft or housing. This measurement

loads are quite small and they are specified in JIS B 1515:2006 (Rolling bearings - Tolerances). Radial internal

clearance of needle bearing with inner ring is specified in JIS B 1520:1995 (radial internal clearance of

bearing). Clearances shown in Table-18 are categorized in group C2, CN, C3, C4, C5 starting from smaller

clearance and group CN is applied to general application.

N Radial internal clearance of bearing

Table-18 Internal clearance of radial bearing

Category Description

C2 Radial clearance smaller than standard clearance

CN clearance Standard radial clearance

C3, C4, C5 Radial clearance larger than standard clearance

Table-19 Value of radial internal clearance of needle bearing Unit: µm

ｄ

Nominal bearing

bore diameter

(mm)

Clearance category

C2 CN C3 C4 C5

Over Incl. min. max. min. max. min. max. min. max. min. max.

- 10 0 25 20 45 35 60 50 75 - -

10 24 0 25 20 45 35 60 50 75 65 90

24 30 0 25 20 45 35 60 50 75 70 95

30 40 5 30 25 50 45 70 60 85 80 105

40 50 5 35 30 60 50 80 70 100 95 125

50 65 10 40 40 70 60 90 80 110 110 140

65 80 10 45 40 75 65 100 90 125 130 165

80 100 15 50 50 85 75 110 105 140 155 190

100 120 15 55 50 90 85 125 125 165 180 220

120 140 15 60 60 105 100 145 145 190 200 245

140 160 20 70 70 120 115 165 165 215 225 275

160 180 25 75 75 125 120 170 170 220 250 300

180 200 35 90 90 145 140 195 195 250 275 330

200 225 45 105 105 165 160 220 220 280 305 365

225 250 45 110 110 175 170 235 235 300 330 395

Remark Nominal number C2,C3,C4 are displayed as part code suffix for these bearings (excluding CN clearance). Example) NA 4903 C2

4-2 Selection of radial internal clearance of bearing

Selection of clearance

Radial internal clearance of needle bearing in operation may generally becomes smaller than initial radial

internal clearance. Temperature difference between inner and outer bearing during operation and fit cause

this change. The radial internal clearance has a significant impact to life, vibration and heat generation of

bearing.

Typically, larger radial internal clearance causes increase of vibration and smaller one results in heat

generation or reduction of life due to excessive force between rolling element and track. Initial radial internal

clearance may be selected as slightly larger than zero clearance in consideration for the internal clearance

during operation. Bearing is designed to have suitable radial clearance by selecting CN clearance for general

application.

Reduction of radial internal clearance due to fits

When bearing is installed to shaft or housing, radial internal clearance reduces due to expansion or shrinking

of track with elastic deformation.

Reduction of radial clearance due to temperature difference between inner and outer ring

Friction heat generated by rotation of bearing will be released to outside through shaft and/or housing. In

general application, radial internal clearance may be reduced as much as the difference of amount of

thermal expansion between inner and outer ring since outer ring becomes cooler than inner ring due to

larger heat release from housing than that from shaft.

34 NOSE SEIKO CO.,LTD NOSE SEIKO CO.,LTD 35

５ Fits

5-1 Purpose of fits

Purpose of “fits” for a bearing is to fixate a bearing with sufficient “interference” between inner ring and shaft

or between outer ring and housing. Insufficient “fits” may cause harmful phenomena which result in

damaging bearing or shortening its life such as abnormal wear in fitting surface, abnormal heat by abrasion

powder, abnormal rotation and vibration due to slip of fitting surface. Therefore, it is imperative to select

proper fits for application.

5-2 Selection of fits

Condition for selection of fits

Selection of bearing “fits” needs to consider following points. Properties and size of load in application,

condition of temperature, accuracy of rotation, material, finish, wall thickness of shaft and housing and

easiness of assembling/disassembling.

“Fits” as shown in Table-20 is generally determined based on properties of load and condition of rotation.

Table-20 Properties of radial load and fits

Properties of bearing load

Fits

Inner ring Outer ring

Load with

rotating inner

ring

Load with

stationary outer

ring

Inner ring: rotation

Outer ring: stationary

Loading direction: constant

Tight fit Loose fit

Inner ring: stationary

Outer ring: rotation

Loading direction: rotate together with outer ring

Load with

rotating outer

ring

Load with

stationary inner

ring

Inner ring: stationary

Outer ring: rotation

Loading direction: constant

Loose fit Tight fit

Inner ring: rotation

Outer ring: stationary

Loading direction: rotate together with inner ring

Load in inconsistent direction

Direction of load is inconsistent due to varying load

direction or including

unbalanced load

Inner ring: rotation or stationary

Outer ring: rotation or stationary

Loading direction: inconsistent

Tight fit Tight fit

Selection of fits

It is necessary to take condition of temperature and material of shaft and housing into consideration in

addition to properties of load and rotation condition for selection of “fits” as mentioned above. Yet, it is

common practice to determine “fits” based on reference to experience and past record because of difficulty

for recognizing whole conditions. Table-21 and Table-22 show “fits” for general application and Table-23

shows “fits” for needle bearing without inner ring against shaft.

Table-21 Fits between needle bearing and housing hole

Conditions Tolerance grade for housing

Load with stationary outer ring Standard and heavy load J7

Split housing with standard load H7

Load in inconsistent direction

Light load J7

Standard load K7

Heavy load and impact shock load M7

Load with rotating outer ring

Light load M7

Standard load N7

Heavy load and impact shock load P7

Light load and high rotation accuracy K6

Table-22 Fits between needle bearing with inner ring and shaft

Conditions Shaft diameter (mm) Tolerance grade Over Incl.

Load with rotating

inner ring

or

Load in inconsistent

direction

Light load ̶ 50 j5

50 100 k5

Standard load

̶ 50 k5

50 150 m5･m6

150~ m6･n6

Heavy load and impact shock

load

~150 m6･n6

150~ n6･p6

Load with stationary

inner ring

Mid to low speed, light load

All dimension

g6

Mid to low speed, standard load

or heavy load h6

With precision rotation accuracy h5

Remark Light load Pr ≦ 0.06Cr Standard load 0.06Cr ＜ Pr ≦ 0.12Cr Heavy load Pr ＞ 0.12Cr

Pr: Dynamic equivalent radial load Cr: Basic dynamic load rating

Table-23 Fits between needle bearing without inner ring and shaft

Nominal diameter

of inscribed circle

Fw (mm)

Radial internal clearance

Clearance smaller than

CN clearance CN clearance Clearance larger than CN

clearance

Over Incl. Tolerance group grade for shaft

-

65

80

160

180

200

250

65

80

160

180

200

250

315

k5

k5

k5

k5

j5

j5

h5

h5

h5

g5

g5

g5

f6

f6

g6

f6

f6

e6

e6

e6

e6

Remark Tight fit with housing hole smaller than k7 shall be modified with smaller shaft size in considering diameter shrink of inscribed

circle of roller after assembly.

36 NOSE SEIKO CO.,LTD NOSE SEIKO CO.,LTD 37

5-3 Table for shaft and housing fits

Table-24 Tolerances for shafts Unit: µm

Nominal bearing

bore diameter

and nominal

diameter of shaft

d (mm)

Tolerance grade for shaft Tolerance grade for shaft Nominal bearing

bore diameter

and nominal

diameter of shaft

d (mm)

b12 c12 d6 e6 e7 f5 f6 g5 g6 h5 h6 h7 h8 h9 h10 h11 h12 js5 j5 js6 j6 j7 k5 k6 m5 m6 n5 n6 p6

Over Incl. high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low Over Incl.

̶ 3 -140 -240 -60 -160 -20 -26 -14 -20 -14 -24 -6 -10 -6 -12 -2 -6 -2 -8 0 -4 0 -6 0 -10 0 -14 0 -25 0 -40 0 -60 0 -100 +2 -2 +2 -2 +3 -3 +4 -2 +6 -4 +4 0 +6 0 +6 +2 +8 +2 +8 +4 +10 +4 +12 +6 ̶ 3

3 6 -140 -260 -70 -190 -30 -38 -20 -28 -20 -32 -10 -15 -10 -18 -4 -9 -4 -12 0 -5 0 -8 0 -12 0 -18 0 -30 0 -48 0 -75 0 -120 +2.5 -2.5 +3 -2 +4 -4 +6 -2 +8 -4 +6 +1 +9 +1 +9 +4 +12 +4 +13 +8 +16 +8 +20 +12 3 6

6 10 -150 -300 -80 -230 -40 -49 -25 -34 -25 -40 -13 -19 -13 -22 -5 -11 -5 -14 0 -6 0 -9 0 -15 0 -22 0 -36 0 -58 0 -90 0 -150 +3 -3 +4 -2 +4.5 -4.5 +7 -2 +10 -5 +7 +1 +10 +1 +12 +6 +15 +6 +16 +10 +19 +10 +24 +15 6 10

10 18 -150 -330 -95 -275 -50 -61 -32 -43 -32 -50 -16 -24 -16 -27 -6 -14 -6 -17 0 -8 0 -11 0 -18 0 -27 0 -43 0 -70 0 -110 0 -180 +4 -4 +5 -3 +5.5 -5.5 +8 -3 +12 -6 +9 +1 +12 +1 +15 +7 +18 +7 +20 +12 +23 +12 +29 +18 10 18

18 30 -160 -370 -110 -320 -65 -78 -40 -53 -40 -61 -20 -29 -20 -33 -7 -16 -7 -20 0 -9 0 -13 0 -21 0 -33 0 -52 0 -84 0 -130 0 -210 +4.5 -4.5 +5 -4 +6.5 -6.5 +9 -4 +13 -8 +11 +2 +15 +2 +17 +8 +21 +8 +24 +15 +28 +15 +35 +22 18 30

30 40 -170 -420 -120 -370

-80 -96 -50 -66 -50 -75 -25 -36 -25 -41 -9 -20 -9 -25 0 -11 0 -16 0 -25 0 -39 0 -62 0 -100 0 -160 0 -250 +5.5 -5.5 +6 -5 +8 -8 +11 -5 +15 -10 +13 +2 +18 +2 +20 +9 +25 +9 +28 +17 +33 +17 +42 +26

30 40

40 50 -180 -430 -130 -380 40 50

50 65 -190 -490 -140 -440

-100 -119 -60 -79 -60 -90 -30 -43 -30 -49 -10 -23 -10 -29 0 -13 0 -19 0 -30 0 -46 0 -74 0 -120 0 -190 0 -300 +6.5 -6.5 +6 -7 +9.5 -9.5 +12 -7 +18 -12 +15 +2 +21 +2 +24 +11 +30 +11 +33 +20 +39 +20 +51 +32

50 65

65 80 -200 -500 -150 -450 65 80

80 100 -220 -570 -170 -520

-120 -142 -72 -94 -72 -107 -36 -51 -36 -58 -12 -27 -12 -34 0 -15 0 -22 0 -35 0 -54 0 -87 0 -140 0 -220 0 -350 +7.5 -7.5 +6 -9 +11 -11 +13 -9 +20 -15 +18 +3 +25 +3 +28 +13 +35 +13 +38 +23 +45 +23 +59 +37

80 100

100 120 -240 -590 -180 -530 100 120

120 140 -260 -660 -200 -600

-145 -170 -85 -110 -85 -125 -43 -61 -43 -68 -14 -32 -14 -39 0 -18 0 -25 0 -40 0 -63 0 -100 0 -160 0 -250 0 -400 +9 -9 +7 -11 +12.5 -12.5 +14 -11 +22 -18 +21 +3 +28 +3 +33 +15 +40 +15 +45 +27 +52 +27 +68 +43

120 140

140 160 -280 -680 -210 -610 140 160

160 180 -310 -710 -230 -630 160 180

180 200 -340 -800 -240 -700

-170 -199 -100 -129 -100 -146 -50 -70 -50 -79 -15 -35 -15 -44 0 -20 0 -29 0 -46 0 -72 0 -115 0 -185 0 -290 0 -460 +10 -10 +7 -13 +14.5 -14.5 +16 -13 +25 -21 +24 +4 +33 +4 +37 +17 +46 +17 +51 +31 +60 +31 +79 +50

180 200

200 225 -380 -840 -260 -720 200 225

225 250 -420 -880 -280 -740 225 250

250 280 -480 -1000 -300 -820

-190 -222 -110 -142 -110 -162 -56 -79 -56 -88 -17 -40 -17 -49 0 -23 0 -32 0 -52 0 -81 0 -130 0 -210 0 -320 0 -520 +11.5 -11.5 +7 -16 +16 -16 +16 -16 +26 -26 +27 +4 +36 +4 +43 +20 +52 +20 +57 +34 +66 +34 +88 +56

250 280

280 315 -540 -1060 -330 -850 280 315

Table-25 Tolerances for holes Unit: µm

Nominal bearing

outer diameter

and nominal

diameter of hole

D(mm)

Housing tolerances and resulting fits Housing tolerances and resulting fits Nominal bearing

outer diameter

and nominal

diameter of hole

d (mm)

B12 E7 E8 E9 F6 F7 G6 G7 H6 H7 H8 H9 H10 H11 JS6 J6 JS7 J7 K5 K6 K7 M6 M7 N6 N7 P6 P7 R7 S7

Over Incl. high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low high low Over Incl.

̶ 3 +240 +140 +24 +14 +28 +14 +39 +14 +12 +6 +16 +6 +8 +2 +12 +2 +6 0 +10 0 +14 0 +25 0 +40 0 +60 0 +3 -3 +2 -4 +5 -5 +4 -6 0 -4 0 -6 0 -10 -2 -8 -2 -12 -4 -10 -4 -14 -6 -12 -6 -16 -10 -20 -14 -24 ̶ 3

3 6 +260 +140 +32 +20 +38 +20 +50 +20 +18 +10 +22 +10 +12 +4 +16 +4 +8 0 +12 0 +18 0 +30 0 +48 0 +75 0 +4 -4 +5 -3 +6 -6 +6 -6 0 -5 +2 -6 +3 -9 -1 -9 0 -12 -5 -13 -4 -16 -9 -17 -8 -20 -11 -23 -15 -27 3 6

6 10 +300 +150 +40 +25 +47 +25 +61 +25 +22 +13 +28 +13 +14 +5 +20 +5 +9 0 +15 0 +22 0 +36 0 +58 0 +90 0 +4.5 -4.5 +5 -4 +7.5 -7.5 +8 -7 +1 -5 +2 -7 +5 -10 -3 -12 0 -15 -7 -16 -4 -19 -12 -21 -9 -24 -13 -28 -17 -32 6 10

10 18 +330 +150 +50 +32 +59 +32 +75 +32 +27 +16 +34 +16 +17 +6 +24 +6 +11 0 +18 0 +27 0 +43 0 +70 0 +110 0 +5.5 -5.5 +6 -5 +9 -9 +10 -8 +2 -6 +2 -9 +6 -12 -4 -15 0 -18 -9 -20 -5 -23 -15 -26 -11 -29 -16 -34 -21 -39 10 18

18 30 +370 +160 +61 +40 +73 +40 +92 +40 +33 +20 +41 +20 +20 +7 +28 +7 +13 0 +21 0 +33 0 +52 0 +84 0 +130 0 +6.5 -6.5 +8 -5 +10.5 -10.5 +12 -9 +1 -8 +2 -11 +6 -15 -4 -17 0 -21 -11 -24 -7 -28 -18 -31 -14 -35 -20 -41 -27 -48 18 30

30 40 +420 +170

+75 +50 +89 +50 +112 +50 +41 +25 +50 +25 +25 +9 +34 +9 +16 0 +25 0 +39 0 +62 0 +100 0 +160 0 +8 -8 +10 -6 +12.5 -12.5 +14 -11 +2 -9 +3 -13 +7 -18 -4 -20 0 -25 -12 -28 -8 -33 -21 -37 -17 -42 -25 -50 -34 -59

30 40

40 50 +430 +180 40 50

50 65 +490 +190

+90 +60 +106 +60 +134 +60 +49 +30 +60 +30 +29 +10 +40 +10 +19 0 +30 0 +46 0 +74 0 +120 0 +190 0 +9.5 -9.5 +13 -6 +15 -15 +18 -12 +3 -10 +4 -15 +9 -21 -5 -24 0 -30 -14 -33 -9 -39 -26 -45 -21 -51

-30 -60 -42 -72 50 65

65 80 +500 +200 -32 -62 -48 -78 65 80

80 100 +570 +220

+107 +72 +126 +72 +159 +72 +58 +36 +71 +36 +34 +12 +47 +12 +22 0 +35 0 +54 0 +87 0 +140 0 +220 0 +11 -11 +16 -6 +17.5 -17.5 +22 -13 +2 -13 +4 -18 +10 -25 -6 -28 0 -35 -16 -38 -10 -45 -30 -52 -24 -59

-38 -73 -58 -93 80 100

100 120 +590 +240 -41 -76 -66 -101 100 120

120 140 +660 +260

+125 +85 +148 +85 +185 +85 +68 +43 +83 +43 +39 +14 +54 +14 +25 0 +40 0 +63 0 +100 0 +160 0 +250 0 +12.5 -12.5 +18 -7 +20 -20 +26 -14 +3 -15 +4 -21 +12 -28 -8 -33 0 -40 -20 -45 -12 -52 -36 -61 -28 -68

-48 -88 -77 -117 120 140

140 160 +680 +280 -50 -90 -85 -125 140 160

160 180 +710 +310 -53 -93 -93 -133 160 180

180 200 +800 +340

+146 +100 +172 +100 +215 +100 +79 +50 +96 +50 +44 +15 +61 +15 +29 0 +46 0 +72 0 +115 0 +185 0 +290 0 +14.5 -14.5 +22 -7 +23 -23 +30 -16 +2 -18 +5 -24 +13 -33 -8 -37 0 -46 -22 -51 -14 -60 -41 -70 -33 -79

-60 -106 -105 -151 180 200

200 225 +840 +380 -63 -109 -113 -159 200 225

225 250 +880 +420 -67 -113 -123 -169 225 250

250 280 +1000 +480

+162 +110 +191 +110 +240 +110 +88 +56 +108 +56 +49 +17 +69 +17 +32 0 +52 0 +81 0 +130 0 +210 0 +320 0 +16 -16 +25 -7 +26 -26 +36 -16 +3 -20 +5 -27 +16 -36 -9 -41 0 -52 -25 -57 -14 -66 -47 -79 -36 -88

-74 -126 -138 -190 250 280

280 315 +1060 +540 -78 -130 -150 -202 280 315

38 NOSE SEIKO CO.,LTD NOSE SEIKO CO.,LTD 39

6-4 Skew of bearing

Skew between inner ring and outer ring generated by deflection of shaft due to external force or mounting

error may result in reduction of life caused by abnormal wear or heat. While permissive amount of skew varies depending on type of bearing, load and bearing internal clearance, it is recommended to be 1/2000 or

less for general application.

6-5 Mounting dimension for bearing

Dimension of shaft and housing for mounting needle bearing (Figure-8) is shown in dimension table for

respective bearings.

Figure-8 Mounting dimension

Fillet radius and height of shoulder for shaft and housing

Maximum permissive radius (ras max) of fillet radius for shaft and housing to which needle bearings are

assembled corresponds to minimum permissive chamfer dimension (rs min) of the bearings.

Minimum value of shoulder diameter of the shaft (da) shall be nominal bore diameter (d) of bearing plus its

shoulder height (h) multiplied by 2. Maximum value of shoulder diameter of the housing (Da) shall be outer

diameter (D) of bearing minus height of its shoulder multiplied by 2.

Table-29 Maximum permissive actual radius of

corner R of shaft and housing ras max Unit: mm

rs min

Minimum permissive chamfer dimension

ras max

Maximum permissive actual radius

of corner R of shaft and housing

Height of shoulder

and corner R

0.1

0.15

0.2

0.1

0.15

0.2

0.3

0.4

0.6

0.3

0.4

0.6

1

1.1

1.5

1

1

1.5

2

2.1

2.5

2

2

2

3

4

5

2.5

3

4

6 Design of shaft and housing

6-1 Accuracy of fitting surface

Correct design and manufacturing of shaft or housing to which needle bearing is assembled are vital for

adequate bearing performance since the needle bearing has thinner track ring compared to other types of rolling

bearings. Table-26 shows dimension accuracy and geometric accuracy of “fitting” part of shaft and housing in

standard application condition, surface roughness and tolerance of runout of shoulder against fitting surface.

Table-26 Accuracy of shaft and housing (recommended)

Item Shaft Housing

Roundness tolerance IT3~IT4 IT4~IT5

Cylindricity tolerance IT3~IT4 IT4~IT5

Shoulder runout tolerance IT3 IT3~IT4

Roughness of fitting surface 0.8a 1.6a

6-2 Accuracy of track surface

Needle bearing can be directly attached to shaft or housing as track for compact bearing structure. In this

case, accuracy and roughness of track surface must be equivalent to that of bearing track surface in order to

ensure bearing life with high rotation accuracy. Since accuracy and roughness of shaft and housing may

affect life and the cause of abnormality of the bearing.

Table-27 shows specification for accuracy and roughness of track surface.

Table-27 Accuracy of track surface (recommended)

Item Shaft Housing

Roundness tolerance IT3 IT3

Cylindricity tolerance IT3 IT3

Shoulder runout tolerance IT3 IT3

Surface roughness 0.2a

6-3 Material and heat treatment of track surface

Surface hardness of shaft and housing must be HRC58 to 64 in order to obtain sufficient loading capacity in

the case of using them as direct track surface. Table-28 shows recommended heat treatment for their material.

Table-28 Material for track

Type of steel Representative

example

Related standards

High carbon-chromium

bearing steel SUJ2 JIS G 4805

Chronium molybdemum

steel SCM415~435 JIS G 4053

Carbon tool steel SK85 JIS G 4401

Stainless steel SUS440C JIS G 4303

40 NOSE SEIKO CO.,LTD NOSE SEIKO CO.,LTD 41

7 Lubrication

7-1 Purpose of lubrication

Purpose of bearing lubrication is to prevent its heat-seizure by mitigating friction and abrasion of rolling

surface and slipping surface. Followings are the detailed explanation.

(1) Mitigation of friction and abrasion

It prevents direct contact between track, rolling element and cage.

It also mitigates friction and abrasion as a result of slip on track surface.

(2) Removal of frictional heat

Lubricant removes abrasion heat inside of bearing or heat propagated from outside to prevent

excessive heat-up of the bearing.

(3) Extension of bearing life

Separating rolling element and track by oil film results in extension of bearing life.

(4) Prevention of rust

Oil film of lubricant mitigates oxidation inside and surface of bearing to prevent corrosion.

(5) Prevention of dust

Packed grease in the case of grease lubrication prevent invasion of foreign matter.

Efficient performance of these effects requires using lubrication method suitable for the application as well

as selection of proper lubricant, its adequate amount, prevention against invasion of external foreign matter

and optimal sealing structure in order to avoid leakage of the lubricant.

7-2 Comparison of grease and oil lubrication

Lubrication method

Lubrication method of bearing consists of grease lubrication and oil lubrication.

Grease lubrication is so popular for broad type of bearing because of its cost efficiency due to its simple

sealing structure and a long duration of operating period with single filling. However, its disadvantage is

larger flow resistance than oil lubrication in light of efficiency to large cooling capability and high speed

application.

Oil lubrication has advantage in large cooling capability and high speed application due to its good flow

characteristics. However, it demands design with consideration to sealing structure and leakage prevention.

The Table-31 compares the two lubrication methods as a guidance for lubrication method selection.

Table-31 Comparison of grease and oil lubrication

Lubrication

method

Item

Grease Oil

Replacement of lubricant △ ○

Lubrication performance ○ ◎

Cooling efficiency × ○

Sealing structure ○ △

Power loss △ ○

Maintenance ○ △

High speed operation × ○

Table-30 Value of tolerance class IT for reference dimension Unit: µm

Reference dimension

mm

Tolerance class

Over Incl. IT2 IT3 IT4 IT5 IT6 IT7

3 6 1.5 2.5 4 5 8 12

6 10 1.5 2.5 4 6 9 15

10 18 2 3 5 8 11 18

18 30 2.5 4 6 9 13 21

30 50 2.5 4 7 11 16 25

50 80 3 5 8 13 19 30

80 120 4 6 10 15 22 35

120 180 5 8 12 18 25 40

180 250 7 10 14 20 29 46

250 315 8 12 16 23 32 52

42 NOSE SEIKO CO.,LTD NOSE SEIKO CO.,LTD 43

Lubrication grease

Grease is a semi-solid lubricant consisting of a base oil (liquid lubrication agent) and a thickener, which are

combined on heating.

Table-32 Type and properties of grease (reference)

Name Lithium grease Sodium

grease

Calcium

base grease

Aluminum

grease Non-soap grease

Thickener Li soap Na soap Ca + Na soap

Ca + Li soap Al soap Bentonite,urea,etc

Base oil Mineral

oil Diester oil Silicon oil Mineral oil Mineral oil Mineral oil Mineral

oil

Synthetic

oil

Dropping point

℃ 170~190 170~190 200~250 150~180 150~180 70~90 250 or

more

250 or

more

Working

temperature ℃ -25~+120 -50~+120 -50~+160 -20~+120 -20~+120 -10~+80 -10~+130 -50~+200

Mechanical

stability Good Fair Fair Good~Fair Good~Fair Fair~Poor Fair Fair

Pressure

resistance Fair Fair Poor Fair Good~Fair Fair Fair Fair

Water resistance Fair Fair Fair Fair~Poor Fair~Poor Fair Fair Fair

Application

Most

various

Versatile

rolling

bearing

grease

Superior in

low temperature,

friction

properties

Suitable

for high

and low

temperature

Unsuitable for

high load

due to

low oil

film

strength

Subject to

emulsifying by mixing with

water

Relatively

good

propertis

to high

temperature

Superior in

water resistance and

mechanical

stability

Suitable for

bearing

being subjected to

vibration

Superior in

viscosity

Suitable for

bearing

being

subjected

to vibration

Vast application from

low to high temperature It includes

types showing superior properties in

resistance to high

and low temperature, and to chemical

by combination with

base oil and thickener

Versatile rolling

bearing grease

Remark Working temperature range is for general properties only and NOT for guarantee purpose.

1) Base oil

Mineral oil and mixed oil are used for base oil of grease.

Diester oil and silicone oil are used as mixed oil.

Lubrication performance depends on viscosity of the base oil, and generally, low viscosity base oil is

suitable for low temperature environment and high speed application, and high viscosity is for high

temperature and high load application.

2) Thickener

Thickener is a material to keep grease in semi-solid state. Type of thickener has impact to maximum

working temperature, water resistance and mechanical stability.

Metal-soap base is popular for material of thickener. In addition, there are thickeners such as urea base

thickener with high heat resistance, and natrium soap-base thickener with poor water resistance due to

easiness to emulsifying by mixing with water.

7-3 Grease lubrication

Filling amount of grease

Grease shall be packed up to volume approximately one-third to one-half of internal space of bearing or

housing. Excessive grease may cause degraded lubrication performance due to leakage of softened grease

or oxidation as a result of increased temperature inside of bearing. This should be critical especially in high

speed operation.

Figure-9 shows an example of grease replenishment plan from side way using a ring with grease hole.

Arranging grease holes evenly on circumference of the ring allows simultaneous entry of replenished grease

into bearing for replacing old grease with new one. However, this design also allows standing old grease in

opposite side space, which needs to be removed periodically by removing the cover.

Figure-9 Grease lubrication

44 NOSE SEIKO CO.,LTD NOSE SEIKO CO.,LTD 45

Table-34 Brand of lubricant grease (reference)

Category Brand Manufacturer

Thickener

or soapbase

Consistency

Dropping

point

℃

Working

temperature ℃

Remark

General

purpose

Alvania

Grease S1

Showa Shell

Sekiyu

Lithium

soap 323 180 -35~120 General purpose

Alvania

Grease S2

Showa Shell

Sekiyu

Lithium

soap 283 181 -25~120 General purpose

Alvania

Grease S3

Showa Shell

Sekiyu

Lithium

soap 242 182 -20~135 General purpose

Wide working

temperature

Fomblin

RT-15

Solvay

Solexis PTFE NO.2 300 or

more -20~250 High temperature

Fomblin

Y-VAC1

Solvay

Solexis PTFE NO.1 300 or

more -20~250 High vacuum (soft)

Fomblin

Y-VAC2

Solvay

Solexis PTFE NO.2 300 or

more -20~250 High vacuum (normal)

Fomblin

Y-VAC3

Solvay

Solexis PTFE NO.3 300 or

more -20~250 High vacuum (rigid)

Low

temperature

Multemp PS

No.2

KYODO

YUSHI

Lithium

soap NO.2 190 -50~130 Low temperature

Other LOR#101 OIL CENTER

RESEARCH PTFE 295 198 -40~188

Superior in abrasion

resistance, load resistance,

water resistance and

chemical resistance

HP300 Dow

Corning PTFE 280 - -65~250

Load resistance, oil resistance, solvent resistance,

chemical resistance

BARRIERTA

SUPER IS/V

NOK

KLUBER PTFE No.2 - -35~260 High vacuum

BARRIERT IEL/

V

NOK

KLUBER PTFE No.2 - -65~200 High vacuum

ISO FLEX

TOPAS NB 52

NOK

KLUBER Barium soap No.2 240 or

more

-50~150

Superior in heat resistance, load resistance,

water resistance and high

speed

DEMNUM

L-200 DAIKIN PTFE 280 - -60~300 High temperature stability

DEMNUM

L-65 DAIKIN PTFE 280 - -70~200 High temperature stability

G1/3Grease The Orelube

Corporation

Non-soap

grease

No.2 - -23~180 High temperature, high

load

Shell Cassida

Grease RLS2

Showa Shell

Sekiyu

Aluminium

complex No.2 240 or

more

-30~120

Superior in water resistance, oxidation stability

and mechanical stability

Super Lube

item number

82329

Henkel PTFE No.2 - -42~232 Extreme pressure, high

temperature

Castrol Microcote 296 Castrol PTFE No.2 256 -50~204

Heat stability, low volatility, shear stability, high

vacuum

3) Consistency

Consistency refers to the “softness” of grease and it is used as a guideline for showing flow characteristics.

The larger the ASTM penetration No. is, the softer the grease is. Table-33 shows typical relationship

between consistency of grease and its operating conditions.

Table-33 Consistency of grease and its operating conditions

NLGI Grade No. ASTM Penetration

(1/10mm) Operating conditions

0 355~385 Centralized lubrication

Oscillating application 1 310~340

2 265~295 General application

3 220~250 General, high temperature

application

4 175~205 Grease with sealed

application

4) Additives

Additives are material to improve performance of grease, which include antioxidants and extreme pressure

additives added as necessary. Condition to use grease for long period without any replenishment requires

added antioxidants to prevent oxidation.

Also, grease in operating conditions with heavy load or impact shock shall be selected from those with

extreme pressure additives added.

5) Mixing different type greases

In principle, different brands of grease must not be mixed. Mixing different type grease is subject to

negative impact each other due to change of consistency and difference of additives.

46 NOSE SEIKO CO.,LTD NOSE SEIKO CO.,LTD 47

4) Oil circulating lubrication

Oil circulating lubrication is widely used in application whose purpose is in cost efficiency for automatic

lubrication with large number of lubrication spots, or is in cooling bearing. This lubrication method

enables cooling or maintaining cleanness of lubricant with oil cooler and filters installed in oil circulation

system. As shown in Figure-11, to make sure that lubrication oil is drained off certainly, it is important to

have as much large outlet port as practical or forced outlet, setting inlet and outlet port of lubrication oil

to opposite side each other to bearing.

Figure-11 Circulating lubrication

Lubrication oil

Highly refined mineral oil such as spindle oil, machine oil or turbine oil, or mixed oil are used as lubrication

oil for bearing. Additives such as antioxidants, extreme pressure additives or depurant are selectively used as

necessary in accordance with application.

It is important to select oil with proper viscosity for operation temperature. Too low viscosity causes

insufficient formation of oil film which results in abrasion or heat-seizure. Too high viscosity causes heat

generation or loss of power due to viscosity resistance. In general, oil with higher viscosity is used for higher

load and lower viscosity for higher speeds.

7-4 Oil lubrication

Oil lubrication is more suitable than grease for high speed rotation with superior cooling efficiency. It is

suitable for application that requests emission of heat to outside that are generated in bearing or added to

the bearing.

1) Oil bath lubrication

Oil bath lubrication is the most popular method used in medium to low speeds. Amount of oil needs to

be properly controlled with oil gauge. Most proper oil amount may be with oil level at the center of the

lowest needle roller of bearing. Housing design with less variation of oil level is preferable.

2) Oil drop lubrication

Oil drop lubrication is broadly used in application with high speed and medium load due to its better

cooling efficiency than oil bath lubrication. Oil dripping through oiler in this method removes friction heat

in a method to lubricate with oil fog filling inside of housing by hitting rotating objects such as shafts and

nuts. While amount of oil varies depending on type of bearing and speed, general amount should be a

couple of drops per minute.

Figure-10 Oil drop lubrication

3) Oil splash lubrication

Oil splash lubrication is a method to splash oil with rotation of gear or disc. Unlike oil bath lubrication, it is

applicable for relatively higher speed without having bearing in direct soak in oil.

48 NOSE SEIKO CO.,LTD NOSE SEIKO CO.,LTD 49

Mounting method

1) Press fitting

In mounting bearings from small to medium sizes which don't need large forces , press fittings in room

temperature are conducted widely. In this case, use pressing fixture as shown in Figure-12 to apply force

evenly at side of bearing and press it in carefully. Applying high viscosity oil on fitting surface during work

may reduce friction on the surface.

Press

Figure-12 Press fitting of

Inner ring

2) Shrink fitting

Shrink fitting is broadly used for tighter interference or mounting large size bearing. How to fit is heating

housing for outer ring and inner ring for shaft respectively with pure mineral oil with less corrosivity in

order to expand their inner diameter for mounting onto the shaft. Heating temperature must not exceed

120°C. During mounting, inner ring could expand toward shaft direction so that it needs to be pressed

against shoulder until completion of cool down to avoid gap between the inner ring and the shoulder.

８ Bearing handling

8-1 Precaution

Bearings are an extremely precision mechanical components. Exercise great care for its handling. Followings

are precautions for the handling.

1) Keep bearings and surroundings clean

Foreign matters invaded inside of bearings such as dust and dirt have harmful effect in rotation or

operation life on the bearings. Take extra precaution to maintain cleanness of bearing, surrounding

components, work tools, lubricants, lubrications oil and working environment.

2) Handle bearings carefully

Shocks such as caused by falling bearing may result in damage or impressions on track or rolling elements.

They can be a cause of failure so that handle bearings carefully.

3) Use proper tools

Make it sure to use work tools properly for bearing type for assembling and disassembling.

4) Pay attention to rust

Although bearings are applied with anti-rust oil, handling with bare hands may cause generation of rust

with perspiration from hands. Exercise care and use rubber gloves or apply mineral oil to hands when

handling with bare hands.

8-2 Mounting

Preparation

Bearings should be mounted in clean and dry circumstance. Dirt on mounting tools should be removed

prior to mounting work, then verify that dimension accuracy, shaft and housing roughness and geometric

accuracy are within designed tolerance.

Packing of bearings should be opened just before start mounting. Fill lubrication grease without washing

bearing in the case of grease lubrication. Washing is generally not required for oil lubrication as well. Still it is

recommended to thoroughly wash out oil and grease when application demands high accuracy or

lubricating performance is degraded by mixing lubricant and anti-rust agents.

50 NOSE SEIKO CO.,LTD NOSE SEIKO CO.,LTD 51

Disassembling inner ring

Inner rings can be carried out most easily by pulling out by press (Figure-14). Dedicated removal tool

(Figure-15) designed in accordance with dimension of the bearing is in use as well.

Press

Figure-14 Disassembling inner ring 1 Figure-15 Disassembling inner ring 2

8-5 Maintenance and inspection

Periodical maintenance and inspection are essential for maximizing performance and prolonged usage of

bearing as well as early discovery of abnormality of the bearings. Inspection items of bearings under

operation include temperature, operation sound, vibration of bearings and condition of lubricant, whose

observation enables judging timing of lubricant replenishment and replacement of components.

8-3 Operation inspection

Operation inspection needs to be performed in order to confirm that bearings is properly mounted. Power

operation at given speed without operation inspection may result in damage of bearings or heat-seizure

due to lubrication failure in the case that mounting is insufficient. Shaft or housing should be rotated by

hand after bearing mounting to confirm if there is no abnormality followed by check (or inspection) in

stepping increase of speed from no load, low speed operation with power up to loaded operation.

Followings are typical abnormal items and major causes that can be checked in the operation inspection.

1) Check item in operation by hand

r Fluctuation in rotation torque, Insufficient mounting

r Sticks and abnormal noise, Impression, damage, invasion of dirt or foreign matters in track surface

r Excessive torque, Insufficiently small clearance

2) Check item in operation by power

r Abnormal noise, vibration ････ Impression, invasion of dirt or foreign matters in track surface, excessive

clearance

r Abnormal temperature ･･･････ Insufficient lubrication, insufficient mounting, insufficiently small clearance

8-4 Removing

Bearing may be removed for periodical machine maintenance or repair for trouble. Bearing and other

components should be carefully disassembled in the same manner as the mounting in the case of re-using

disassembled bearing or researching trouble condition.

Bearings should be carried out in an appropriate manner in accordance with type of bearing and condition

of fits. Structure design should take disassembling work into consideration at planning stage of construction

around the bearing since it would be difficult to disassemble especially the tight fit bearing.

Removing outer ring

Installing bolts for disassembling outer ring at several locations in circumference of housing will allow

removing outer ring assembled with tight fits easily by tightening-up the screws evenly as shown in

Figure-13.

Bolt for

disassembling

Figure-13 Disassembling outer ring

52 NOSE SEIKO CO.,LTD

MACHINED RING

NEEDLE ROLLER

BEARINGS

WITHOUT INNER RING

INTER CHANGE ROLLER CAM NEEDLE ROLLER ROLLER CAM RNA, NK RNA, NK

■RNA49,RNA59,RNA69,RNA48,NK TYPE

NOSE SEIKO CO.,LTD 53

RNA, NK

㪛

㪝

㪚

㱏

㪛

㫎

㪸

㪛

㪝

㪚

㱏

㫎

㻺㻷㻔㻲㼣 䍺 㻝㻜㻕 㻾㻺㻭㻠㻥㻘㻾㻺㻭㻡㻥㻘㻾㻺㻭㻢㻥㻔㻲㼣 䍺 㻟㻡㻕㻘㻺㻷

Shaft

Diameter

(mm)

Designation Dimensions (mm) Standard mounting

dimensions (mm)

Basic dynamic

load rating

Basic static

load rating

Limiting speed

＊

Mass Usable bearing designation

g

RNA 49 RNA 59 RNA 69 RNA 48 NK Fw D C rs min Da MAX Cr

N

Cor

N rpm g

(approx) INNER RING WITH INNER RING

5 —

—

—

—

—

—

—

—

NK5/10

NK5/12

5

5

+0.018

+0.010

10

10

10

12

0.15

0.15

6.5

6.5

2 420

3 080

1 950

2 660

40 000

40 000

3.4

4.2

—

—

—

—

6 —

—

—

—

—

—

—

—

NK6/10

NK6/12

6

6

+0.018

+0.010

12

12

10

12

0.015

0.15

7.5

7.5

2 700

3 440

2 320

3 170

37 000

37 000

5.3

6.4

—

—

—

—

7

RNA 495

—

—

—

—

—

—

—

—

—

—

—

—

NK7/10

NK7/12

7

7

7

+0.022

+0.013

13

14

14

10

10

12

0.15

0.3

0.3

8.5

8.5

8.5

2 960

3 600

4 610

2 690

2 960

4 050

34 000

34 000

34 000

5.9

6.9

8.3

IR5710

—

—

NA495

—

—

8

RNA 496

—

—

—

—

—

—

—

—

—

—

—

—

NK8/12

NK8/16

8

8

8

+0.022

+0.013

15

15

15

10

12

16

0.15

0.3

0.3

13.8

13

13

3 900

5 100

7 100

3 400

4 700

7 300

32 000

32 000

32 000

7.3

9

13

IR6810

IR5812

IR5816

NA496

NKI 5/12

NKI 5/16

9

—

—

RNA 497

—

—

—

—

—

—

—

—

—

NK9/12

NK9/16

—

9

9

9

+0.022

+0.013

16

16

17

12

16

10

0.3

0.3

0.15

14

14

15.8

5 500

7 600

4 500

5 300

8 200

3 600

30 000

30 000

30 000

10

13.2

9.3

IR6912

IR6916

IR7910

NKI 6/12

NKI 6/16

NA497

10

—

—

RNA 498

—

—

—

—

—

—

—

—

—

NK10/12

NK10/16

—

10

10

10

+0.022

+0.013

17

17

19

12

16

11

0.3

0.3

0.2

15

15

17.4

5 900

8 200

6 200

6 000

9 200

5 000

28 000

28 000

28 000

10.7

14.3

12.6

IR71012

IR71016

IR81011

NKI 7/12

NKI 7/16

NA498

12

—

—

RNA 499

—

—

—

—

—

—

—

—

—

NK12/12

NK12/16

—

12

12

12

+0.027

+0.016

19

19

20

12

16

11

0.3

0.3

0.3

17

17

18

6 600

9 200

6 600

7 300

11 200

6 300

26 000

26 000

26 000

12.2

16.3

13.6

IR91212

IR91216

IR91211

NKI 9/12

NKI 9/16

NA499

＊ Suitable for oil lubrication. In case of grease lubrication, down to 60％ of this value.

54 NOSE SEIKO CO.,LTD

MACHINED RING

NEEDLE ROLLER

BEARINGS

WITHOUT INNER RING

■RNA49,RNA59,RNA69,RNA48,NK TYPE

RNA, NK

NOSE SEIKO CO.,LTD 55

㻾㻺㻭㻠㻥㻘㻾㻺㻭㻡㻥㻘㻾㻺㻭㻢㻥㻔㻲㼣 䍺 㻟㻡㻕㻘㻺㻷

㪛

㪝

㪚

㱏

㪛

㫎

㪸

RNA, NK

Shaft

Diameter

(mm)

Designation Dimensions (mm) Standard mounting

dimensions (mm)

Basic dynamic

load rating

Basic static

load rating

Limiting speed

＊

Mass Usable bearing designation

g

RNA 49 RNA 59 RNA 69 RNA 48 NK Fw D C rs min Da MAX Cr

N

Cor

N rpm g

(approx) INNER RING WITH INNER RING

14

RNA 4900

—

—

—

—

—

—

—

—

—

—

—

—

NK14/16

NK14/20

14

14

14

+0.027

+0.016

22

22

22

13

16

20

0.3

0.3

0.3

20

20

20

9 200

11 800

14 800

10 100

13 700

18 500

24 000

24 000

24 000

16.5

21

26.5

IR101413

IR101416

IR101420

NA4900

NKI 10/16

NKI 10/20

15 —

—

—

—

—

—

—

—

NK15/16

NK15/20

15

15

+0.027

+0.016

23

23

16

20

0.3

0.3

21

21

12 400

15 600

14 900

20 200

23 000

23 000

22.5

28

—

—

—

—

16

RNA 4901

—

—

—

—

—

—

—

—

—

—

RNA 6901

—

—

—

—

—

NK16/16

NK16/20

—

16

16

16

16

+0.027

+0.016

24

24

24

24

13

16

20

22

0.3

0.3

0.3

0.3

22

22

22

22

9 700

12 300

15 600

17 100

11 100

15 100

20 400

23 000

23 000

23 000

23 000

23 000

18.1

23

29

30

IR121613

IR121616

IR121620

IR121622

NA4901

NKI 12/16

NKI 12/20

NA6901

17 —

—

—

—

—

—

—

—

NK17/16

NK17/20

17

17

+0.027

+0.016

25

25

16

20

0.3

0.3

23

23

12 800

16 300

16 300

22 100

22 000

22 000

24.5

30.5

—

—

—

—

18 —

—

—

—

—

—

—

—

NK18/16

NK18/20

18

18

+0.027

+0.016

26

26

16

20

0.3

0.3

24

24

13 400

17 000

17 500

23 600

21 000

21 000

25.5

32

—

—

—

—

19 —

—

—

—

—

—

—

—

NK19/16

NK19/20

19

19

+0.033

+0.020

27

27

16

20

0.3

0.3

25

25

14 000

17 700

18 700

25 300

21 000

21 000

27

34

IR151916

IR151920

NKI 15/16

NKI 15/20

20

RNA 4902

—

—

—

—

—

—

RNA 5902

—

—

—

—

—

—

RNA 6902

—

—

—

—

—

—

NK20/16

—

NK20/20

—

20

20

20

20

20

+0.033

+0.020

28

28

28

28

28

13

16

18

20

23

0.3

0.3

0.3

0.3

0.3

26

26

26

26

26

10 900

13 900

15 700

17 600

19 300

13 800

18 700

22 100

25 400

28 700

20 000

20 000

20 000

20 000

20 000

21.5

27.5

33

35.5

37

IR152013

—

IR152018

—

IR152023

NA4902

—

NA5902

—

NA6902

＊ Suitable for oil lubrication. In case of grease lubrication, down to 60％ of this value.

56 NOSE SEIKO CO.,LTD

MACHINED RING

NEEDLE ROLLER

BEARINGS

WITHOUT INNER RING

■RNA49,RNA59,RNA69,RNA48,NK TYPE

RNA, NK

NOSE SEIKO CO.,LTD 57

㻾㻺㻭㻠㻥㻘㻾㻺㻭㻡㻥㻘㻾㻺㻭㻢㻥㻔㻲㼣 䍺 㻟㻡㻕㻘㻺㻷

㪛

㪝

㪚

㱏

㪛

㫎

㪸

RNA, NK

Shaft

Diameter

(mm)

Designation Dimensions (mm) Standard mounting

dimensions (mm)

Basic dynamic

load rating

Basic static

load rating

Limiting speed

＊

Mass Usable bearing designation

g

RNA 49 RNA 59 RNA 69 RNA 48 NK Fw D C rs min Da MAX Cr

N

Cor

N rpm g

(approx) INNER RING WITH INNER RING

21 —

—

—

—

—

—

—

—

NK21/16

NK21/20

21

21

+0.033

+0.020

29

29

16

20

0.3

0.3

27

27

14 400

18 200

20 000

27 100

19 000

19 000

29

36

IR172116

IR172120

NKI 17/16

NKI 17/20

22

RNA 4903

—

—

—

—

—

—

RNA 5903

—

—

—

—

—

—

RNA 6903

—

—

—

—

—

—

NK22/16

—

NK22/20

—

22

22

22

22

22

+0.033

+0.020

30

30

30

30

30

13

16

18

20

23

0.3

0.3

0.3

0.3

0.3

28

28

28

28

28

11 800

14 900

16 900

18 900

20 800

15 600

21 200

24 900

28 700

32 500

18 000

18 000

18 000

18 000

18 000

23.5

30

35

37.5

40.5

IR172213

—

IR172218

—

IR172223

NA4903

—

NA5903

—

NA6903

24 —

—

—

—

—

—

—

—

NK24/16

NK24/20

24

24

+0.033

+0.020

32

32

16

20

0.3

0.3

30

30

15 300

19 400

22 600

30 500

17 000

17 000

32

40.5

IR202416

IR202420

NKI 20/16

NKI 20/20

25

—

—

RNA 4904

—

—

—

—

—

RNA 5904

—

—

—

—

—

RNA 6904

—

—

—

—

—

NK25/16

NK25/20

—

—

—

25

25

25

25

25

+0.033

+0.020

33

33

37

37

37

16

20

17

23

30

0.3

0.3

0.3

0.3

0.3

31

31

35

35

35

15 800

20 000

21 000

29 400

35 400

23 700

32 200

25 000

38 600

48 800

16 000

16 000

16 000

16 000

16 000

33.5

42

55.5

84

95.5

—

—

IR202517

IR202523

IR202530

—

—

NA4904

NA5904

NA6904

26 —

—

—

—

—

—

—

—

NK26/16

NK26/20

26

26

+0.033

+0.020

34

34

16

20

0.3

0.3

32

32

16 300

20 600

24 900

33 700

15 000

15 000

34.5

43.5

IR222616

IR222620

NKI 22/16

NKI 22/20

28

—

—

RNA 49/22

—

—

—

—

—

RNA 59/22

—

—

—

—

—

RNA 69/22

—

—

—

—

—

NK28/20

NK28/30

—

—

—

28

28

28

28

28

+0.033

+0.020

37

37

39

39

39

20

30

17

23

30

0.3

0.3

0.3

0.3

0.3

35

35

37

37

37

21 700

31 100

21 400

29 800

36 300

37 100

58 900

28 800

44 400

56 900

14 000

14 000

14 000

14 000

14 000

51.5

83.5

56.5

92

97.5

—

—

IR222817

IR222823

IR222830

—

—

NA49/22

NA59/22

NA69/22

29 —

—

—

—

—

—

—

—

NK29/20

NK29/30

29

29

+0.033

+0.020

38

38

20

30

0.3

0.3

36

36

21 600

30 900

37 200

59 000

14 000

14 000

57

85

IR252920

IR252930

NKI 25/20

NKI 25/30

＊ Suitable for oil lubrication. In case of grease lubrication, down to 60％ of this value.

58 NOSE SEIKO CO.,LTD

MACHINED RING

NEEDLE ROLLER

BEARINGS

WITHOUT INNER RING

■RNA49,RNA59,RNA69,RNA48,NK TYPE

RNA, NK

㻾㻺㻭㻠㻥㻘㻾㻺㻭㻡㻥㻘㻾㻺㻭㻢㻥㻔㻲㼣㻌䍺㻌㻟㻡㻕㻘㻺㻷

㪛

㪝

㪚

㱏

㫎

NOSE SEIKO CO.,LTD 59

㻾㻺㻭㻢㻥

㪛

㪝

㱏

㫎

㪚

㪛㪸

RNA, NK

Shaft

Diameter

(mm)

Designation Dimensions (mm) Standard mounting

dimensions (mm)

Basic dynamic

load rating

Basic static

load rating

Limiting speed

＊

Mass Usable bearing designation

g

RNA 49 RNA 59 RNA 69 RNA 48 NK Fw D C rs min Da MAX Cr

N

Cor

N rpm g

(approx) INNER RING WITH INNER RING

30

—

—

RNA 4905

—

—

—

—

—

RNA 5905

—

—

—

—

—

RNA 6905

—

—

—

—

—

NK30/20

NK30/30

—

—

—

30

30

30

30

30

+0.033

+0.020

40

40

42

42

42

20

30

17

23

30

0.3

0.3

0.3

0.3

0.3

38

38

40

40

40

25 100

36 000

23 700

33 200

42 100

40 100

63 800

30 700

47 500

64 200

13 000

13 000

13 000

13 000

13 000

64.5

97.5

64

101

111

—

—

IR253017

IR253023

IR253030

—

—

NA4905

NA5905

NA6905

32

—

—

RNA 49/28

—

—

—

—

—

RNA 59/28

—

—

—

—

—

RNA 69/28

—

—

—

—

—

NK32/20

NK32/30

—

—

—

32

32

32

32

32

+0.041

+0.025

42

42

45

45

45

20

30

17

23

30

0.3

0.3

0.3

0.3

0.3

40

40

43

43

43

25 700

36 900

24 500

34 300

41 800

42 200

67 100

32 700

50 500

64 700

13 000

13 000

13 000

13 000

13 000

68

102

76.5

108

133

IR283220

IR283230

IR283217

IR283223

IR283230

NKI 28/20

NKI 28/30

NA49/28

NA59/28

NA69/28

35

—

—

RNA 4906

—

—

—

—

—

RNA 5906

—

—

—

—

—

RNA 6906

—

—

—

—

—

NK35/20

NK35/30

—

—

—

35

35

35

35

35

+0.041

+0.025

45

45

47

47

47

20

30

17

23

30

0.3

0.3

0.3

0.3

0.3

43

43

45

45

45

27 000

38 600

25 200

35 200

43 100

46 200

73 500

34 700

53 700

69 000

11 000

11 000

11 000

11 000

11 000

73.5

112

72.5

108

125

IR303520

IR303530

IR303517

IR303523

IR303530

NKI 30/20

NKI 30/30

NA4906

NA5906

NA6906

37 —

—

—

—

—

—

—

—

NK37/20

NK37/30

37

37

+0.041

+0.025

47

47

20

30

0.3

0.3

45

45

28 200

40 500

50 100

79 800

11 000

11 000

77.5

117

IR323720

IR323730

NKI 32/20

NKI 32/30

38 —

—

—

—

—

—

—

—

NK38/20

NK38/30

38

38

+0.041

+0.025

48

48

20

30

0.3

0.3

46

46

28 100

40 300

50 200

80 000

11 000

11 000

79

119

—

—

—

—

40

—

—

RNA 49/32

—

—

—

—

—

RNA 59/32

—

—

—

—

—

RNA 69/32

—

—

—

—

—

NK40/20

NK40/30

—

—

—

40

40

40

40

40

+0.041

+0.025

50

50

52

52

52

20

30

20

27

36

0.3

0.3

0.6

0.6

0.6

48

48

48

48

48

29 400

42 300

31 300

41 900

53 500

54 100

86 100

47 900

69 900

95 700

10 000

10 000

10 000

10 000

10 000

83

125

96

149

172

IR354020

IR354030

IR324020

IR324027

IR324036

NKI 35/20

NKI 35/30

NA49/32

NA59/32

NA69/32

42

—

—

RNA 4907

—

—

—

—

—

RNA 5907

—

—

—

—

—

RNA 6907

—

—

—

—

—

NK42/20

NK42/30

—

—

—

42

42

42

42

42

+0.041

+0.025

52

52

55

55

55

20

30

20

27

36

0.3

0.3

0.6

0.6

0.6

50

50

51

51

51

29 900

43 000

32 000

42 900

54 800

56 200

89 500

50 200

73 200

100 000

9 500

9 500

9 500

9 500

9 500

86.5

130

113

176

200

—

—

IR354220

IR354227

IR354236

—

—

NA4907

NA5907

NA6907

＊ Suitable for oil lubrication. In case of grease lubrication, down to 60％ of this value.

60 NOSE SEIKO CO.,LTD

MACHINED RING

NEEDLE ROLLER

BEARINGS

WITHOUT INNER RING

■RNA49,RNA59,RNA69,RNA48,NK TYPE

RNA, NK

㻾㻺㻭㻠㻥㻘㻾㻺㻭㻡㻥㻘㻾㻺㻭㻠㻤㻘㻺㻷

㪛

㪝

㪚

㱏

㫎

NOSE SEIKO CO.,LTD 61

㻾㻺㻭㻢㻥

㪛

㪝

㱏

㫎

㪚

㪛㪸

RNA, NK

Shaft

Diameter

(mm)

Designation Dimensions (mm) Standard mounting

dimensions (mm)

Basic dynamic

load rating

Basic static

load rating

Limiting speed

＊

Mass Usable bearing designation

g

RNA 49 RNA 59 RNA 69 RNA 48 NK Fw D C rs min Da MAX Cr

N

Cor

N rpm g

(approx) INNER RING WITH INNER RING

43 —

—

—

—

—

—

—

—

NK43/20

NK43/30

43

43

+0.041

+0.025

53

53

20

30

0.3

0.3

51

51

30 500

43 700

58 100

92 500

9 500

9 500

88.5

133

IR384320

IR384330

NKI 38/20

NKI 38/30

45 —

—

—

—

—

—

—

—

NK45/20

NK45/30

45

45

+0.041

+0.025

55

55

20

30

0.3

0.3

53

53

31 100

44 500

60 100

95 700

9 000

9 000

92

138

IR404520

IR404530

NKI 40/20

NKI 40/30

47 —

—

—

—

—

—

—

—

NK47/20

NK47/30

47

47

+0.041

+0.025

57

57

20

30

0.3

0.3

55

55

31 500

45 200

62 300

99 000

8 500

8 500

95

144

IR424720

IR424730

NKI 42/20

NKI 42/30

48

RNA 4908

—

—

—

RNA 5908

—

—

—

RNA 6908

—

—

—

—

—

—

48

48

48

+0.041

+0.025

62

62

62

22

30

40

0.6

0.6

0.6

58

58

58

41 600

58 000

71 300

67 400

103 000

134 400

8 500

8 500

8 500

152

225

275

IR404822

IR404830

IR404840

NA4908

NA5908

NA6908

50 —

—

—

—

—

—

—

—

NK50/25

NK50/35

50

50

+0.041

+0.025

62

62

25

35

0.6

0.6

58

58

43 000

58 100

85 200

125 500

8 000

8 000

159

225

IR455025

IR455035

NKI 45/25

NKI 45/35

52

RNA 4909

—

—

—

RNA 5909

—

—

—

RNA 6909

—

—

—

—

—

—

52

52

52

+0.049

+0.030

68

68

68

22

30

40

0.6

0.6

0.6

64

64

64

43 500

60 700

74 600

73 400

112 000

147 100

7 500

7 500

7 500

197

232

355

IR455222

IR455230

IR455240

NA4909

NA5909

NA6909

55 —

—

—

—

—

—

—

—

NK55/25

NK55/35

55

55

+0.049

+0.030

68

68

25

35

0.6

0.6

64

64

45 400

61 300

94 100

138 300

7 500

7 500

193

255

IR505525

IR505535

NKI 50/25

NKI 50/35

＊ Suitable for oil lubrication. In case of grease lubrication, down to 60％ of this value.

62 NOSE SEIKO CO.,LTD

MACHINED RING

NEEDLE ROLLER

BEARINGS

WITHOUT INNER RING

■RNA49,RNA59,RNA69,RNA48,NK TYPE

RNA, NK

㻾㻺㻭㻠㻥㻘㻾㻺㻭㻡㻥㻘㻾㻺㻭㻠㻤㻘㻺㻷

㪛

㪝

㪚

㱏

㫎

NOSE SEIKO CO.,LTD 63

㻾㻺㻭㻢㻥

RNA, NK

㪛

㪝

㱏

㫎

㪚

㪛㪸

Shaft

Diameter

(mm)

Designation Dimensions (mm) Standard mounting

dimensions (mm)

Basic dynamic

load rating

Basic static

load rating

Limiting speed

＊

Mass Usable bearing designation

g

RNA 49 RNA 59 RNA 69 RNA 48 NK Fw D C rs min Da MAX Cr

N

Cor

N rpm g

(approx) INNER RING WITH INNER RING

58

RNA 4910

—

—

—

RNA 5910

—

—

—

RNA 6910

—

—

—

—

—

—

58

58

58

+0.049

+0.030

72

72

72

22

30

40

0.6

0.6

0.6

68

68

68

46 200

64 400

79 100

82 100

126 000

163 800

7 000

7 000

7 000

179

289

320

IR505822

IR505830

IR505840

NA4910

NA5910

NA6910

60 —

—

—

—

—

—

—

—

NK60/25

NK60/35

60

60

+0.049

+0.030

72

72

25

35

0.6

0.6

68

68

47 500

64 100

103 000

151 000

6 500

6 500

187

260

IR556025

IR556035

NKI 55/25

NKI 55/35

63

RNA 4911

—

—

—

RNA 5911

—

—

—

RNA 6911

—

—

—

—

—

—

63

63

63

+0.049

+0.030

80

80

80

25

34

45

1

1

1

75

75

75

57 600

82 600

99 000

97 300

154 000

194 200

6 500

6 500

6 500

265

367

475

IR556325

IR556334

IR556345

NA4911

NA5911

NA6911

65 —

—

—

—

—

—

—

—

NK65/25

NK65/35

65

65

+0.049

+0.030

78

78

25

35

0.6

0.6

74

74

49 600

67 000

111 800

164 800

6 000

6 000

225

315

—

—

—

—

68

—

—

RNA 4912

—

—

—

—

—

RNA 5912

—

—

—

—

—

RNA 6912

—

—

—

—

—

NK68/25

NK68/35

—

—

—

68

68

68

68

68

+0.049

+0.030

82

82

85

85

85

25

35

25

34

45

0.6

0.6

1

1

1

78

78

80

80

80

54 800

72 100

60 100

86 100

103 000

116 700

165 700

104 900

167 000

210 800

6 000

6 000

6 000

6 000

6 000

250

350

285

408

510

IR606825

IR606835

IR606825

IR606834

IR606845

NKI 60/25

NKI 60/35

NA4912

NA5912

NA6912

70 —

—

—

—

—

—

—

—

NK70/25

NK70/35

70

70

+0.049

+0.030

85

85

25

35

0.6

0.6

81

81

55 500

73 000

120 600

170 600

5 500

5 500

280

395

—

—

—

—

72

RNA 4913

—

—

—

RNA 5913

—

—

—

RNA 6913

—

—

—

—

—

—

72

72

72

+0.049

+0.030

90

90

90

25

34

45

1

1

1

85

85

85

62 800

89 900

107 900

113 800

180 000

226 500

5 500

5 500

5 500

325

462

585

IR657225

IR657234

IR657245

NA4913

NA5913

NA6913

＊ Suitable for oil lubrication. In case of grease lubrication, down to 60％ of this value.

64 NOSE SEIKO CO.,LTD

MACHINED RING

NEEDLE ROLLER

BEARINGS

WITHOUT INNER RING

■RNA49,RNA59,RNA69,RNA48,NK TYPE

RNA, NK

㻾㻺㻭㻠㻥㻘㻾㻺㻭㻡㻥㻘㻾㻺㻭㻠㻤㻘㻺㻷

㪛

㪝

㪚

㱏

㫎

NOSE SEIKO CO.,LTD 65

㻾㻺㻭㻢㻥

RNA, NK

㪛

㪝

㱏

㫎

㪚

㪛㪸

Shaft

Diameter

(mm)

Designation Dimensions (mm) Standard mounting

dimensions (mm)

Basic dynamic

load rating

Basic static

load rating

Limiting speed

＊

Mass Usable bearing designation

g

RNA 49 RNA 59 RNA 69 RNA 48 NK Fw D C rs min Da MAX Cr

N

Cor

N rpm g

(approx) INNER RING WITH INNER RING

73 —

—

—

—

—

—

—

—

NK73/25

NK73/35

73

73

+0.049

+0.030

90

90

25

35

0.6

0.6

86

86

61 100

80 400

126 500

180 400

5 500

5 500

335

475

—

IR657335

—

NKI 65/35

75 —

—

—

—

—

—

—

—

NK75/25

NK75/35

75

75

+0.049

+0.030

92

92

25

35

0.6

0.6

88

88

62 200

82 700

130 400

186 300

5 500

5 500

345

485

—

—

—

—

80

—

—

RNA 4914

—

—

—

—

—

RNA 5914

—

—

—

—

—

RNA 6914

—

—

—

—

—

NK80/25

NK80/35

—

—

—

80

80

80

80

80

+0.049

+0.030

95

95

100

100

100

25

35

30

40

54

1

1

1

1

1

90

90

95

95

95

59 400

78 100

83 200

112 000

133 400

137 300

194 200

157 900

232 000

310 900

5 000

5 000

5 000

5 000

5 000

315

445

495

706

910

IR708025

IR708035

IR708030

IR708040

IR708054

NKI 70/25

NKI 70/35

NA4914

NA5914

NA6914

85

—

RNA 4915

—

—

—

—

—

—

RNA 5915

—

—

—

—

—

RNA 6915

—

—

—

—

—

NK85/25

—

NK85/35

—

—

85

85

85

85

85

+0.058

+0.036

105

105

105

105

105

25

30

35

40

54

1

1

1

1

1

100

100

100

100

100

76 400

86 200

102 000

116 000

138 300

145 100

169 700

209 900

249 000

330 500

4 500

4 500

4 500

4 500

4 500

435

525

610

745

960

IR758525

IR758530

IR758535

IR758540

IR758554

NKI 75/25

NA4915

NKI 75/35

NA5915

NA6915

90

—

RNA 4916

—

—

—

—

—

—

RNA 5916

—

—

—

—

—

RNA 6916

—

—

—

—

—

NK90/25

—

NK90/35

—

—

90

90

90

90

90

+0.058

+0.036

110

110

110

110

110

25

30

35

40

54

1

1

1

1

1

105

105

105

105

105

77 400

87 400

103 000

117 000

143 200

150 000

174 600

216 700

257 000

350 100

4 500

4 500

4 500

4 500

4 500

456

550

640

787

1 010

IR809025

IR809030

IR809035

IR809040

IR809054

NKI 80/25

NA4916

NKI 80/35

NA5916

NA6916

95 —

—

—

—

—

—

—

—

NK95/26

NK95/36

95

95

+0.058

+0.036

115

115

26

36

1

1

110

110

79 700

106 900

158 900

230 500

4 200

4 200

495

690

IR859526

IR859536

NKI 85/26

NKI 85/36

100

—

RNA 4917

—

—

—

—

—

—

RNA 5917

—

—

—

—

—

RNA 6917

—

—

—

—

—

NK100/26

—

NK100/36

—

—

100

100

100

100

100

+0.058

+0.036

120

120

120

120

120

26

35

36

46

63

1

1.1

1

1.1

1.1

115

113.5

115

113.5

113.5

82 500

109 800

109 800

144 000

172 600

168 700

244 200

244 200

346 000

466 800

4 000

4 000

4 000

4 000

4 000

525

705

725

1 000

1 300

IR9010026

IR8510035

IR9010036

IR8510046

IR8510063

NKI 90/26

NA4917

NKI 90/36

NA5917

NA6917

＊ Suitable for oil lubrication. In case of grease lubrication, down to 60％ of this value.

66 NOSE SEIKO CO.,LTD

MACHINED RING

NEEDLE ROLLER

BEARINGS

WITHOUT INNER RING

■RNA49,RNA59,RNA69,RNA48,NK TYPE

RNA, NK

㻾㻺㻭㻠㻥㻘㻾㻺㻭㻡㻥㻘㻾㻺㻭㻠㻤㻘㻺㻷

㪛

㪝

㪚

㱏

㫎

NOSE SEIKO CO.,LTD 67

㻾㻺㻭㻢㻥

RNA, NK

㪛

㪝

㱏

㫎

㪚

㪛㪸

Shaft

Diameter

(mm)

Designation Dimensions (mm) Standard mounting

dimensions (mm)

Basic dynamic

load rating

Basic static

load rating

Limiting speed

＊

Mass Usable bearing designation

g

RNA 49 RNA 59 RNA 69 RNA 48 NK Fw D C rs min Da MAX Cr

N

Cor

N rpm g

(approx) INNER RING WITH INNER RING

105

—

RNA 4918

—

—

—

—

—

—

RNA 5918

—

—

—

—

—

RNA 6918

—

—

—

—

—

NK105/26

—

NK105/36

—

—

105

105

105

105

105

+0.058

+0.036

125

125

125

125

125

26

35

36

46

63

1

1.1

1

1.1

1.1

120

118.5

120

118.5

118.5

84 700

112 800

112 800

148 000

177 500

177 500

257 900

257 900

365 000

490 300

3 800

3 800

3 800

3 800

3 800

545

740

760

1 040

1 360

IR9510526

IR9010535

IR9510536

IR9010546

IR9010563

NKI 95/26

NA4918

NKI 95/36

NA5918

NA6918

110

—

RNA 4919

—

—

—

—

—

—

RNA 5919

—

—

—

—

—

RNA 6919

—

—

—

—

—

NK110/30

—

NK110/40

—

—

110

110

110

110

110

+0.058

+0.036

130

130

130

130

130

30

35

40

46

63

1.1

1.1

1.1

1.1

1.1

123.5

123.5

123.5

123.5

1 123.5

105 900

116 700

133 400

152 000

182 400

239 300

270 700

323 600

384 000

514 800

3 600

3 600

3 600

3 600

3 600

660

770

880

1 130

1 420

IR10011030

IR9511035

IR10011040

IR9511046

IR9511063

NKI 100/30

NA4919

NKI 100/40

NA5919

NA6919

115 RNA 4920 ———— 115 +0.058

+0.036 140 40 1.1 133.5 145 000 329 000 3 500 1 190 IR10011540 NA4920

120 — — — RNA 4822 — 120 +0.058

+0.036 140 30 1 135 93 000 239 000 3 500 790 IR11012030 NA4822

125 RNA 4922 ———— 125 +0.068

+0.043 150 40 1.1 143.5 152 000 357 000 3 000 1 280 IR11012540 NA4922

130 — — — RNA 4824 — 130 +0.068

+0.043 150 30 1 145 97 000 259 000 3 000 850 IR12013030 NA4824

135 RNA 4924 ———— 135 +0.068

+0.043 165 45 1.1 158.5 187 000 435 000 3 000 1 930 IR12013545 NA4924

＊ Suitable for oil lubrication. In case of grease lubrication, down to 60％ of this value.

68 NOSE SEIKO CO.,LTD

MACHINED RING

NEEDLE ROLLER

BEARINGS

WITHOUT INNER RING

■RNA49,RNA59,RNA69,RNA48,NK TYPE

RNA, NK

㻾㻺㻭㻠㻥㻘㻾㻺㻭㻡㻥㻘㻾㻺㻭㻠㻤㻘㻺㻷

㪛

㪝

㪚

㱏

㫎

NOSE SEIKO CO.,LTD 69

㻾㻺㻭㻢㻥

RNA, NK

㪛

㪝

㱏

㫎

㪚

㪛㪸

Shaft

Diameter

(mm)

Designation Dimensions (mm) Standard mounting

dimensions (mm)

Basic dynamic

load rating

Basic static

load rating

Limiting speed

＊

Mass Usable bearing designation

g

RNA 49 RNA 59 RNA 69 RNA 48 NK Fw D C rs min Da MAX Cr

N

Cor

N rpm g

(approx) INNER RING WITH INNER RING

145 — — — RNA 4826 — 145 +0.068

+0.043 165 35 1.1 158.5 117 000 340 000 3 000 1 100 IR13014535 NA4826

150 RNA 4926 ———— 150 +0.068

+0.043 180 50 1.5 172 216 000 540 000 2 500 2 360 IR13015050 NA4926

155 — — — RNA 4828 — 155 +0.068

+0.043 175 35 1.1 168.5 121 000 363 000 2 500 1 170 IR14015535 NA4828

160 RNA 4928 ———— 160 +0.068

+0.043 190 50 1.5 182 224 000 580 000 2 500 2 500 IR14016050 NA4928

165 — — — RNA 4830 — 165 +0.068

+0.043 190 40 1.1 183.5 168 000 446 000 2 500 1 750 IR15016540 NA4830

175 — — — RNA 4832 — 175 +0.068

+0.043 200 40 1.1 193.5 173 000 474 000 2 500 1 850 IR16017540 NA4832

＊ Suitable for oil lubrication. In case of grease lubrication, down to 60％ of this value.

70 NOSE SEIKO CO.,LTD

MACHINED RING

NEEDLE ROLLER

BEARINGS

WITH INNER RING

■NA49,NA59,NA69,NA48,NKI TYPE

NA, NKI

NOSE SEIKO CO.,LTD 71

㪛

㪻

㪝

㪻

㪚

㱏

㱏

㪛

㪸

㪸

㪛

㪻

㪝

㪚

㱏

㱏

㻺㻷㻵㻔㼐 䍺 㻤㻕 㻺㻭㻠㻥㻘㻺㻭㻡㻥㻘㻺㻭㻢㻥㻔㼐 䍺 㻟㻜㻕㻘㻺㻷㻵

NA, NKI

Shaft

Diameter

(mm)

Designation Dimensions (mm) Standard mounting

dimensions (mm)

Basic dynamic

load rating

Basic static

load rating

Limiting

speed＊

Mass Usable bearing designation

g

NA 49 NA 59 NA 69 NA48 NKI d DC rs min F da Da Cr

N

Cor

N rpm g

(approx) OUTER RING INNER RING

MIN MAX MAX

5

NA495

—

—

—

—

—

—

—

—

—

—

—

—

NKI 5/12

NKI 5/16

5

5

5

0

-0.008

13

15

15

10

12

16

0.15

0.3

0.3

7

8

8

6.2

7

7

6.7

7.7

7.7

11.8

13

13

2 960

5 100

7 100

2 690

4 700

7 300

34 000

32 000

32 000

7.3

11.9

16.7

RNA495

NK8/12

NK8/16

IR5710

IR5812

IR5816

6

NA 496

—

—

—

—

—

—

—

—

—

—

—

—

NKI 6/12

NKI 6/16

6

6

6

0

-0.008

15

16

16

10

12

16

0.15

0.3

0.3

8

9

9

7.2

8

8

7.7

8.7

8.7

13.8

14

14

3 900

5 500

7 600

3 400

5 300

8 200

32 000

30 000

30 000

9.1

13

17.5

RNA496

NK9/12

NK9/16

IR6810

IR6912

IR6916

7

NA 497

—

—

—

—

—

—

—

—

—

—

—

—

NKI 7/12

NKI 7/16

7

7

7

0

-0.008

17

17

17

10

12

16

0.15

0.3

0.3

9

10

10

8.2

9

9

8.7

9.7

9.7

15.8

15

15

4 500

5 900

8 200

3 600

6 000

9 200

30 000

28 000

28 000

11.2

14.3

19.2

RNA497

NK10/12

NK10/16

IR7910

IR71012

IR71016

8 NA 498 — — — — 8 0

-0.008 19 11 0.2 10 9.2 9.7 17.4 6 200 5 000 28 000 15 RNA498 IR81011

9

—

—

NA 499

—

—

—

—

—

—

—

—

—

NKI 9/12

NKI 9/16

—

9

9

9

0

-0.008

19

19

20

12

16

11

0.3

0.3

0.3

12

12

12

11

11

11

11.5

11.5

11.5

17

17

18

6 600

9 200

6 600

7 300

11 200

6 300

26 000

26 000

26 000

16.7

22.5

16.7

NK12/12

NK12/16

RNA499

IR91212

IR91216

IR91211

10

NA 4900

—

—

—

—

—

—

—

—

—

—

—

—

NKI 10/16

NKI 10/20

10

10

10

0

-0.008

22

22

22

13

16

20

0.3

0.3

0.3

14

14

14

12

12

12

13

13

13

20

20

20

9 200

11 800

14 800

10 100

13 700

18 500

24 000

24 000

24 000

24

30

38

RNA4900

NK14/16

NK14/20

IR101413

IR101416

IR101420

12

NA 4901

—

—

—

—

—

—

—

—

—

—

NA 6901

—

—

—

—

—

NKI 12/16

NKI 12/20

—

12

12

12

12

0

-0.008

24

24

24

24

13

16

20

22

0.3

0.3

0.3

0.3

16

16

16

16

14

14

14

14

15

15

15

15

22

22

22

22

9 700

12 300

15 600

17 100

11 100

15 100

20 400

23 000

23 000

23 000

23 000

23 000

26.5

33.5

42.5

44.5

RNA4901

NK16/16

NK16/20

RNA6901

IR121613

IR121616

IR121620

IR121622

＊ Suitable for oil lubrication. In case of grease lubrication, down to 60％ of this value.

72 NOSE SEIKO CO.,LTD

MACHINED RING

NEEDLE ROLLER

BEARINGS

WITH INNER RING

■NA49,NA59,NA69,NA48,NKI TYPE

NA, NKI

NOSE SEIKO CO.,LTD 73

㪛

㪻

㪝

㪻

㪚

㱏

㱏

㪛

㪸

㪸

㻺㻭㻠㻥㻘㻺㻭㻡㻥㻘㻺㻭㻢㻥㻔㼐 䍺 㻟㻜㻕㻘㻺㻷㻵

NA, NKI

Shaft

Diameter

(mm)

Designation Dimensions (mm) Standard mounting

dimensions (mm)

Basic dynamic

load rating

Basic static

load rating

Limiting

speed＊

Mass Usable bearing designation

g

NA 49 NA 59 NA 69 NA48 NKI d DC rs min F da Da Cr

N

Cor

N rpm g

(approx) OUTER RING INNER RING

MIN MAX MAX

15

—

—

NA 4902

—

—

—

—

—

NA 5902

—

—

—

—

—

NA 6902

—

—

—

—

—

NKI 15/16

NKI 15/20

—

—

—

15

15

15

15

15

0

-0.008

27

27

28

28

28

16

20

13

18

23

0.3

0.3

0.3

0.3

0.3

19

19

20

20

20

17

17

17

17

17

18

18

19

19

19

25

25

26

26

26

14 000

17 700

10 900

15 700

19 300

18 700

25 300

13 800

22 100

28 700

21 000

21 000

20 000

20 000

20 000

39.5

50

35

52

61

NK19/16

NK19/20

RNA4902

RNA5902

RNA6902

IR151916

IR151920

IR152013

IR152018

IR152023

17

—

—

NA 4903

—

—

—

—

—

NA 5903

—

—

—

—

—

NA 6903

—

—

—

—

—

NKI 17/16

NKI 17/20

—

—

—

17

17

17

17

17

0

-0.008

29

29

30

30

30

16

20

13

18

23

0.3

0.3

0.3

0.3

0.3

21

21

22

22

22

19

19

19

19

19

20

20

21

21

21

27

27

28

28

28

14 400

18 200

11 800

16 900

20 800

20 000

27 100

15 600

24 900

32 500

19 000

19 000

18 000

18 000

18 000

43.5

54

39

56

67

NK21/16

NK21/20

RNA4903

RNA5903

RNA6903

IR172116

IR172120

IR172213

IR172218

IR172223

20

—

—

NA 4904

—

—

—

—

—

NA 5904

—

—

—

—

—

NA 6904

—

—

—

—

—

NKI 20/16

NKI 20/20

—

—

—

20

20

20

20

20

0

-0.010

32

32

37

37

37

16

20

17

23

30

0.3

0.3

0.3

0.3

0.3

24

24

25

25

25

22

22

22

22

22

23

23

24

24

24

30

30

35

35

35

15 300

19 400

21 000

29 400

35 400

22 600

30 500

25 000

38 600

48 800

17 000

17 000

16 000

16 000

16 000

48.5

61

78.5

115

136

NK24/16

NK24/20

RNA4904

RNA5904

RNA6904

IR202416

IR202420

IR202517

IR202523

IR202530

22

—

—

NA 49/22

—

—

—

—

—

NA 59/22

—

—

—

—

—

NA 69/22

—

—

—

—

—

NKI 22/16

NKI 22/20

—

—

—

22

22

22

22

22

0

-0.010

34

34

39

39

39

16

20

17

23

30

0.3

0.3

0.3

0.3

0.3

26

26

28

28

28

24

24

24

24

24

25

25

27

27

27

32

32

37

37

37

16 300

20 600

21 400

29 800

36 300

24 900

33 700

28 800

44 400

56 900

15 000

15 000

14 000

14 000

14 000

52

67.5

87

134

152

NK26/16

NK26/20

RNA49/22

RNA59/22

RNA69/22

IR222616

IR222620

IR222817

IR222823

IR222830

25

—

—

NA 4905

—

—

—

—

—

NA 5905

—

—

—

—

—

NA 6905

—

—

—

—

—

NKI 25/20

NKI 25/30

—

—

—

25

25

25

25

25

0

-0.010

38

38

42

42

42

20

30

17

23

30

0.3

0.3

0.3

0.3

0.3

29

29

30

30

30

27

27

27

27

27

28

28

29

29

29

36

36

40

40

40

21 600

30 900

23 700

33 200

42 100

37 200

59 000

30 700

47 500

64 200

14 000

14 000

13 000

13 000

13 000

82

123

92.5

139

160

NK29/20

NK29/30

RNA4905

RNA5905

RNA6905

IR252920

IR252930

IR253017

IR253023

IR253030

28

—

—

NA 49/28

—

—

—

—

—

NA 59/28

—

—

—

—

—

NA 69/28

—

—

—

—

—

NKI 28/20

NKI 28/30

—

—

—

28

28

28

28

28

0

-0.010

42

42

45

45

45

20

30

17

23

30

0.3

0.3

0.3

0.3

0.3

32

32

32

32

32

30

30

30

30

30

31

31

31

31

31

40

40

43

43

43

25 700

36 900

24 500

34 300

41 800

42 200

67 100

32 700

50 500

64 700

13 000

13 000

13 000

13 000

13 000

96.5

145

101

142

176

NK32/20

NK32/30

RNA49/28

RNA59/28

RNA69/28

IR283220

IR283230

IR283217

IR283223

IR283230

30

—

—

NA 4906

—

—

—

—

—

NA 5906

—

—

—

—

—

NA 6906

—

—

—

—

—

NKI 30/20

NKI 30/30

—

—

—

30

30

30

30

30

0

-0.010

45

45

47

47

47

20

30

17

23

30

0.3

0.3

0.3

0.3

0.3

35

35

35

35

35

32

32

32

32

32

34

34

34

34

34

43

43

45

45

45

27 000

38 600

25 200

35 200

43 100

46 200

73 500

34 700

53 700

69 000

11 000

11 000

11 000

11 000

11 000

112

171

106

152

184

NK35/20

NK35/30

RNA4906

RNA5906

RNA6906

IR303520

IR303530

IR303517

IR303523

IR303530

＊ Suitable for oil lubrication. In case of grease lubrication, down to 60％ of this value.

74 NOSE SEIKO CO.,LTD

MACHINED RING

NEEDLE ROLLER

BEARINGS

WITH INNER RING

■NA49,NA59,NA69,NA48,NKI TYPE

NA, NKI

㻺㻭㻠㻥㻘㻺㻭㻡㻥㻘㻺㻭㻢㻥㻔㼐 䍺 㻟㻜㻕㻘㻺㻷㻵

㪛

㪻

㪝

㪚

㱏

㱏

NOSE SEIKO CO.,LTD 75

㪛

㪻

㱏

㪝

㱏

㪚

㪻

㪛

㪸

㪸

㻺㻭㻢㻥

NA, NKI

Shaft

Diameter

(mm)

Designation Dimensions (mm) Standard mounting

dimensions (mm)

Basic dynamic

load rating

Basic static

load rating

Limiting

speed＊

Mass Usable bearing designation

g

NA 49 NA 59 NA 69 NA48 NKI d DC rs min F da Da Cr

N

Cor

N rpm g

(approx) OUTER RING INNER RING

MIN MAX MAX

32

—

—

NA 49/32

—

—

—

—

—

NA 59/32

—

—

—

—

—

NA 69/32

—

—

—

—

—

NKI 32/20

NKI 32/30

—

—

—

32

32

32

32

32

0

-0.012

47

47

52

52

52

20

30

20

27

36

0.3

0.3

0.6

0.6

0.6

37

37

40

40

40

34

34

36

36

36

36

36

39

39

39

45

45

48

48

48

28 200

40 500

31 300

41 900

53 500

50 100

79 800

47 900

69 900

95 700

11 000

11 000

10 000

10 000

10 000

121

180

165

241

295

NK37/20

NK37/30

RNA49/32

RNA59/32

RNA69/32

IR323720

IR323730

IR324020

IR324027

IR324036

35

—

—

NA 4907

—

—

—

—

—

NA 5907

—

—

—

—

—

NA 6907

—

—

—

—

—

NKI 35/20

NKI 35/30

—

—

—

35

35

35

35

35

0

-0.012

50

50

55

55

55

20

30

20

27

36

0.3

0.3

0.6

0.6

0.6

40

40

42

42

42

37

37

39

39

39

39

39

41

41

41

48

48

51

51

51

29 400

42 300

32 000

42 900

54 800

54 100

86 100

50 200

73 200

100 000

10 000

10 000

9 500

9 500

9 500

129

192

178

256

320

NK40/20

NK40/30

RNA4907

RNA5907

RNA6907

IR354020

IR354030

IR354220

IR354227

IR354236

38 —

—

—

—

—

—

—

—

NKI 38/20

NKI 38/30

38

38

0

-0.012

53

53

20

30

0.3

0.3

43

43

40

40

42

42

51

51

30 500

43 700

58 100

92 500

9 500

9 500

136

205

NK43/20

NK43/30

IR384320

IR384330

40

—

—

NA 4908

—

—

—

—

—

NA 5908

—

—

—

—

—

NA 6908

—

—

—

—

—

NKI 40/20

NKI 40/30

—

—

—

40

40

40

40

40

0

-0.012

55

55

62

62

62

20

30

22

30

40

0.3

0.3

0.6

0.6

0.6

45

45

48

48

48

42

42

44

44

44

44

44

47

47

47

53

53

58

58

58

31 100

44 500

41 600

58 000

71 300

60 100

95 700

67 400

103 000

134 400

9 000

9 000

8 500

8 500

8 500

143

215

245

348

440

NK45/20

NK45/30

RNA4908

RNA5908

RNA6908

IR404520

IR404530

IR404822

IR404830

IR404840

42 —

—

—

—

—

—

—

—

NKI 42/20

NKI 42/30

42

42

0

-0.012

57

57

20

30

0.3

0.3

47

47

44

44

46

46

55

55

31 500

45 200

62 300

99 000

8 500

8 500

149

225

NK47/20

NK47/30

IR424720

IR424730

45

—

—

NA 4909

—

—

—

—

—

NA 5909

—

—

—

—

—

NA 6909

—

—

—

—

—

NKI 45/25

NKI 45/35

—

—

—

45

45

45

45

45

0

-0.012

62

62

68

68

68

25

35

22

30

40

0.6

0.6

0.6

0.6

0.6

50

50

52

52

52

49

49

49

49

49

49.5

49.5

51

51

51

58

58

64

64

64

43 000

58 100

43 500

60 700

74 600

85 200

125 500

73 400

112 000

147 100

8 000

8 000

7 500

7 500

7 500

230

320

285

396

520

NK50/25

NK50/35

RNA4909

RNA5909

RNA6909

IR455025

IR455035

IR455222

IR455230

IR455240

50

—

—

NA 4910

—

—

—

—

—

NA 5910

—

—

—

—

—

NA 6910

—

—

—

—

—

NKI 50/25

NKI 50/35

—

—

—

50

50

50

50

50

0

-0.012

68

68

72

72

72

25

35

22

30

40

0.6

0.6

0.6

0.6

0.6

55

55

58

58

58

54

54

54

54

54

54.5

54.5

57

57

57

64

64

68

68

68

45 400

61 300

46 200

64 400

79 100

94 100

138 300

82 100

126 000

163 800

7 500

7 500

7 000

7 000

7 000

270

365

295

498

530

NK55/25

NK55/35

RNA4910

RNA5910

RNA6910

IR505525

IR505535

IR505822

IR505830

IR505840

＊ Suitable for oil lubrication. In case of grease lubrication, down to 60％ of this value.

76 NOSE SEIKO CO.,LTD

MACHINED RING

NEEDLE ROLLER

BEARINGS

WITH INNER RING

■NA49,NA59,NA69,NA48,NKI TYPE

NA, NKI

㻺㻭㻠㻥㻘㻺㻭㻡㻥㻘㻺㻷㻵

㪛

㪻

㪝

㪚

㱏

㱏

NOSE SEIKO CO.,LTD 77

㪛

㪻

㱏

㪝

㱏

㪚

㪻

㪛

㪸

㪸

㻺㻭㻢㻥

NA, NKI

Shaft

Diameter

(mm)

Designation Dimensions (mm) Standard mounting

dimensions (mm)

Basic dynamic

load rating

Basic static

load rating

Limiting

speed＊

Mass Usable bearing designation

g

NA 49 NA 59 NA 69 NA48 NKI d DC rs min F da Da Cr

N

Cor

N rpm g

(approx) OUTER RING INNER RING

MIN MAX MAX

55

—

—

NA 4911

—

—

—

—

—

NA 5911

—

—

—

—

—

NA 6911

—

—

—

—

—

NKI 55/25

NKI 55/35

—

—

—

55

55

55

55

55

0

-0.015

72

72

80

80

80

25

35

25

34

45

0.6

0.6

1

1

1

60

60

63

63

63

59

59

60

60

60

59.5

59.5

61

61

61

68

68

75

75

75

47 500

64 100

57 600

82 600

99 000

103 000

151 000

97 300

154 000

194 200

6 500

6 500

6 500

6 500

6 500

275

380

410

559

730

NK60/25

NK60/35

RNA4911

RNA5911

RNA6911

IR556025

IR556035

IR556325

IR556334

IR556345

60

—

—

NA 4912

—

—

—

—

—

NA 5912

—

—

—

—

—

NA 6912

—

—

—

—

—

NKI 60/25

NKI 60/35

—

—

—

60

60

60

60

60

0

-0.015

82

82

85

85

85

25

35

25

34

45

0.6

0.6

1

1

1

68

68

68

68

68

64

64

64

65

65

66

66

66

66

66

78

78

80

80

80

54 800

72 100

60 100

86 100

103 000

116 700

165 700

104 900

167 000

210 800

6 000

6 000

6 000

6 000

6 000

395

560

440

614

785

NK68/25

NK68/35

RNA4912

RNA5912

RNA6912

IR606825

IR606835

IR606825

IR606834

IR606845

65

NA 4913

—

—

—

—

NA 5913

—

—

—

—

—

NA 6913

—

—

—

—

—

—

NKI 65/35

—

65

65

65

65

0

-0.015

90

90

90

90

25

34

35

45

1

1

0.6

1

72

72

73

72

70

70

69

70

70.5

70.5

71

70.5

85

85

86

85

62 800

89 900

80 400

107 900

113 800

180 000

180 400

226 500

5 500

5 500

5 500

5 500

470

655

710

840

RNA4913

RNA5913

NK73/35

RNA6913

IR657225

IR657234

IR657335

IR657245

70

—

—

NA 4914

—

—

—

—

—

NA 5914

—

—

—

—

—

NA 6914

—

—

—

—

—

NKI 70/25

NKI 70/35

—

—

—

70

70

70

70

70

0

-0.015

95

95

100

100

100

25

35

30

40

54

1

1

1

1

1

80

80

80

80

80

75

75

75

75

75

78

78

78

78

78

90

90

95

95

95

59 400

78 100

83 200

112 000

133 400

137 300

194 200

157 900

232 000

310 900

5 000

5 000

5 000

5 000

5 000

540

755

765

1 060

1 400

NK80/25

NK80/35

RNA4914

RNA5914

RNA6914

IR708025

IR708035

IR708030

IR708040

IR708054

75

—

NA 4915

—

—

—

—

—

—

NA 5915

—

—

—

—

—

NA 6915

—

—

—

—

—

NKI 75/25

—

NKI 75/35

—

—

75

75

75

75

75

0

-0.015

105

105

105

105

105

25

30

35

40

54

1

1

1

1

1

85

85

85

85

85

80

80

80

80

80

83

83

83

83

83

100

100

100

100

100

76 400

86 200

102 000

116 000

138 300

145 100

169 700

209 900

249 000

330 500

4 500

4 500

4 500

4 500

4 500

675

810

945

1 130

1 480

NK85/25

RNA4915

NK85/35

RNA5915

RNA6915

IR758525

IR758530

IR758535

IR758540

IR758554

80

—

NA 4916

—

—

—

—

—

—

NA 5916

—

—

—

—

—

NA 6916

—

—

—

—

—

NKI 80/25

—

NKI 80/35

—

—

80

80

80

80

80

0

-0.015

110

110

110

110

110

25

30

35

40

54

1

1

1

1

1

90

90

90

90

90

85

85

85

85

85

88

88

88

88

88

105

105

105

105

105

77 400

87 400

103 000

117 000

143 200

150 000

174 600

216 700

257 000

350 100

4 500

4 500

4 500

4 500

4 500

710

855

995

1 150

1 560

NK90/25

RNA4916

NK90/35

RNA5916

RNA6916

IR809025

IR809030

IR809035

IR809040

IR809054

85

—

—

NA 4917

—

—

—

—

—

NA 5917

—

—

—

—

—

NA 6917

—

—

—

—

—

NKI 85/26

NKI 85/36

—

—

—

85

85

85

85

85

0

-0.020

115

115

120

120

120

26

36

35

46

63

1

1

1.1

1.1

1.1

95

95

100

100

100

90

90

91.5

91.5

91.5

93

93

98

98

98

110

110

133.5

133.5

133.5

79 700

106 900

109 800

144 000

172 600

158 900

230 500

244 200

346 000

466 800

4 200

4 200

4 000

4 000

4 000

775

1 080

1 280

1 760

2 340

NK95/26

NK95/36

RNA4917