SPHERICAL PLAIN BEARING

临清市森豪轴承有限公司LINQINGSENHAOBEARINGCO.,LTD.

内求SEEK WITHIN目录CATALOGUE

企业简介 01 Company Profile
企业文化 03 Company Culture
企业荣誉 04 Company Honor
生产设备 05 Production Equipment
检测设备 06 Testing Equipment
关节轴承的配合与公差 07 Fit And Tolerance
尺寸公差 10 Dimensional Tolerance
关节轴承的径向游隙 13 Radial Internal Clearance Of Sphderical Plain Bearings
向心关节轴承选择准则 15 Selection Of Radial Spherical Plain Bearings
角接触关节轴承选择准则 18 Selection Of Angular Contact Spherical Plain Bearings
推力关节轴承选择准则 19 Selection Of Thrust Spherical Plain Bearings
杆端关节轴承选择准则 20 Selection Of Rod Ends
关节轴承的安装与润滑 23 Mounting And Lubrication For Spherical Plain Bearings
关节轴承额定载荷与寿命计算 25 Kqbalcalculation Of Basic Load

Ratings And Service Life Of Spherical Plain Bearing

油润滑向心关节轴承 Oil-lubricated Radial Ball Bearing

GE...ES(2RS) 36
GEG...ES(2RS) 37
GE...LO 38
GE...HO(2RS) 38
GEZ...ES(2RS) 39
GEGZ...ES(2RS) 40
GEWZ...ES(2RS) 41
GEF...ES 42
GEK...XS(2GS) 42
GEBK...S 43
GEBJ...S 43
COM... 44

自润滑向心关节轴承 Self-lubricating Radial Joint Bearing

GE...ET(2RS) 45
GEG...ET(2RS) 46
GEZ...ET(2RS) 47
GE...ET(2RS/X) 48
GE...XT(2RS/X) 48
GE...C 49
GEG... 49
GE...PW 50
COM...T 51
GEH...HTL GEH..XTL(2RS) 52
GE...XF/Q 53
GEC..XF/Q 53
GEH...XF/Q 54
GEH...HF/Q 54

俄式关节轴承 Russian-style Ball Bearing

WCN 56
2山CN 57
2WC 57
6WCΛ 57
9WCN 58
EC 58
GWCI...K 58

角接触/推力关节轴承 AngularContact/ThrustSpherical RollerBearing

GAC...S GAC...T 60
GACZ...S 61
GX...S GX...T 62

油缸耳环/杆端关节轴承 Cylinder EarRing/Rod End Joint Bearing

GIHR-K...DO 64
GIHN-K...LO 65
GAS 66
GIHN-K...DO 67
GF...DO 68
GF...LO 69
TS...NF 69
GK...DO 70
SI...ES(2RS) 71
SA...ES(2RS) SAS...ES(2RS) 72
SIG...ES(2RS) 73
SAG...ES(2RS) 74
PHS 75
POS 76
SI...C SI...ETL(2RS) 77
SA...C SA...ETL(2RS) 78
SI...T/K 79
SA...T/K 80
NH...T 81
NOS...T 82
LHSA...RS 83
CS 83
SQ...RS 84

小松配套专用关节轴承 85 KOMATSUAccessories

卡特彼勒配套专用关节轴承 86CATAccessories

向心关节轴承型号对照表 87BearingModel Comparison Table

杆端关节轴承型号对照表 88 Bearing Model Comparison Table

临清市森豪轴承有限公司始建于2009年，坐落于山东省临清市，坐拥“轴承之乡”临清完善的产业生态与便捷交通优势，是一家集轴承设计、生产、经营及进出口业务于一体的现代化制造企业。

Linqing Senhao Bearing Co.,Ltd.was founded in 20o9 and is located in Linqing CityShandong Province.It enjoys the complete industrial ecosystem and convenienttransportationadvantages of Linqing,known as the "Hometown of Bearings".It is a modern manufacturing enterprise integrating bearing design，production, operation and import and export business.

润滑型向心关节轴承 Lubricated radial joint bearing 自润滑型向心关节轴承 Self-lubricating radial joint bearing 不锈钢关节轴承 Stainless steel joint bearing 角接触关节轴承 Angular contact joint bearing 推力关节轴承 Thrust joint bearing 油缸耳环轴承 Cylinderearringbearing

作为专业的高端关节轴承生产厂家，公司深耕核心领域，专注研发生产润滑型向心关节轴承、自润滑型向心关节轴承、角接触关节轴承、推力关节轴承、油缸耳环轴承等系列产品，兼具高精度、低摩擦、大承载、长寿命等核心优势，广泛适配汽车、工程机械、水利机械、冶金钢铁、液压油缸、气动离合制动器等多元场景，更成为卡特、小松等工程车辆的优质配件供应商。公司旗下SNBAL品牌凭借可靠品质，产品远销亚洲、欧美、南美、澳大利亚等几十个国家和地区，赢得全球市场的广泛认可与赞誉。

公司占地10000平方米，配备先进的自动化生产设备、一流的检测设备与优秀技术团队，建立完善的品质控制体系并通过ISO9001质量体系认证，年产能力达500万套，为产品稳定性提供坚实保障。

Asaprofessional manufacturerof high-end sphericalplain bearings,thecompanyhasbeendeeply engaged in core fields,focusing ontheresearchand development andproductionofa seriesof productssuchas lubricatedradialplain bearings,self-lubricating radialplain bearings,angularcontactsphericalplain bearings, thrust sphericalplainbearings,and cylinderring bearings.These products feature coreadvantages such as highprecision,lowfriction,largeloadcapacityandlongservicelife.Itiswidelyapplicabletovarioussenarios such asautomobiles,constructionmachinery，waterconservancymachinery，metalurgical steel，hydraulic cylinders,pneumatic clutchesand brakes,and_has becomea high-quality partssupplier forengineering vehiclesofbrandslikeCaterpilarandKomatsu.TheSBALbrandunderthecompany,withitsreliablequality hasits_productsexported to_dozensof countriesand regionsinAsia，Europe,America，South America, Australia,etc.,and has won wide recognition and praise in the global market.

The_companycoversan_areaof_10,ooo squaremeters，equippedwithadvancedautomatedproduction equipment,first-classtesting equipmentandanoutstanding technical team._It hasestablishedacomplete qualitycontrolsystemand passed the ISO 90o1qualitysystem certification.Theannualproduction capacity reaches 5 million sets,providing a solid guarantee for product stability.

临清市森豪轴承有限公司HIGH-END SPHERICALPLAINBEARING高端关节轴承生产厂家

愿景 Vision

缔造中国知名轴承品牌 Createawell-knownbearingbrandinChina

福

价值观 Values

内求利他诚信创新 Seekwithin，benefitothers,behonestandinnovative

企业使命 Corporate Mission

为客户创造价值，为员工创造未来 Create value for customersanda future for employees

服务理念 Service Philosophy

精益求精客户至上严谨细致精诚合作
Strive for excellence, put customers first, be meticulous and rigorous,
andcooperatesincerely

企业荣誉COMPANYHONOR

金相显微镜Metallographic Microscope

测长仪 Length Measuring Instrument

光谱仪Spectrometer

硬度计、振动仪 Hardness Tester, Vibration Instrument

轮廓粗糙度仪 Profile Roughness Meter

圆度仪 Roundness Tester

05/06

关节轴承的配合与公差 FITANDTOLERANCE

在关节轴承内、外圈安装时有一个适当的过盈量，才能获得满意的径向方位和支撑力。不恰当或错误的配合不仅会降低轴承的使用寿命通常也会对其他配件造成损害，由于配合不当会引起轴承的失效，如：

向心关节轴承内圈球面出现裂纹，早期剥落及球面位移；向心关节轴承内圈与轴或外圈与轴承座间因蠕动及磨蚀产生磨损：由于不正确的配合导致内部游隙值变小出现卡死或造成轴承烧伤：引起球面变形而导致噪声值上升和旋转精度的降低。

关节轴承的配合类型以及轴、孔公差带

轴承与轴和轴承座孔的配合代号以及所选用的轴、孔公差带应符合GB1800\~1804的规定，根据轴承内圈或轴圈)与轴配合的性质，轴颈直径的极限偏差，在基孔制配合中选择：

a.过盈和过度配合：
b.间隙配合：
轴和座孔公差带与轴承内径和外径公差的相对位置如下图所示：

轴配合公差

Generally speaking,satlsfactory radlal locationand adequate support can only be obtalned when the Innerand outerings are mounted with an approprlate degree of interference.Inadequately or incorrectly secured bearing rings maycause damage to the bearings and assoclated components.Therefore It Is necessary to make careful investigationin selecting a proper fit.Some of the bearlng fallures caused by Improper flt are llsted below:

Spherical surface cracking,early flaking and displacement of spherical surface Abrasion caused by creeping between bearing and shaft housing Seizing or overheating damage caused by negative internal clearances Increased nolse and deterlorated rotatlonal accuracy due to spherical surface deformation

The following table contains recommendations for suitable shaft and housing tolerances.

Shaftfits

Housing fits

关节轴承的配合与公差 FITANDTOLERANCE

轴径公差

Shaftdiametertolerances

轴承座孔公差 Housing bore tolerances

1.向心关节轴承内圈

Innerringof spherical plain bearing

内圈高度公差

Innerringwidthtolerance

尺寸公差 DIMENSIONALTOLERANCE

2.向心关节轴承外圈 Outer ring of spherical plain bearing

外圈高度公差

Outerringwidthtolerance

3.杆端关节轴承内圈 Innerringofrodends

4.杆端关节轴承中心高偏差 Centre heightdeviation of rod ends

关节轴承的径向游隙 RADIAL INTERNAL CLEARANCEOFSPHDERICALPLAINBEARINGS

1.向心关节轴承 Spherical plainbearing

2.杆端关节轴承 Rodends

向心关节轴承选择准则SELECTIONOFRADIALSPHERICALPLAINBEARINGS

1、润滑型向心关节轴承 Radial spherical plain bearings requiring maintenance

向心关节轴承选择准则SELECTIONOFRADIALSPHERICALPLAINBEARINGS

角接触关节轴承选择准则 SELECTIONOFANGULAR CONTACT SPHERICALPLAINBEARINGS

角接触关节轴承 Angularcontact spherical plain bearings

推力关节轴承选择准则 SELECTIONOFTHRUSTSPHERICALPLAINBEARINGS

推力关节轴承 Thrust spherical plain bearings

杆端关节轴承选择准则 SELECTIONOFROD ENDS

1、润滑型杆端关节轴承 Rod ends requiringmaintenance

杆端关节轴承选择准则 SELECTION OFROD ENDS

2、自润滑型杆端关节轴承Maintenance-freerodends

关节轴承的安装与润滑

Mounting and lubrication for spherical plain bearings

1、负荷方向与开裂位置 Direction of Load and position of split

2、安装简例 Mounting example

3、安装与拆卸 Mounting and dismounting

关节轴承的安装与润滑

Mounting and lubrication for spherical plain bearings

4、润滑与维护 Lubrication and maintenance

5、密封 Sealing

关节轴承额定载荷与寿命计算

1、关节轴承额定静载荷与当量静载荷

关节轴承额定静载荷的一般计算式为: \mathsf { C } _ { s = \lfloor \mathsf { p } \rfloor } \bar { \mathsf { c } } \mathsf { d } _ { \mathsf { m } } \mathsf { l } ( ±b { \varepsilon } )
① 、对向心关节轴承，在正常游隙条件下,公式可转化为: \complement _ { s r } = fsCdm(N)
式中 \mathbf { f } _ { s } { = } \mathbf { f } _ { s } ( [ \mathbf { p } ] , ± , \mathbf { d } _ { m } ) 与轴承材料、结构型式、径向游隙等因素有关，如下表列出了正常游隙下的fs值:

当向心关节轴承承受径向和轴向联合静载荷时，其径向当量静载荷为 * P _ { r } = X _ { r } F _ { 1 } (N)，式中系数X与Fa/F值有关，如下表列出了X的取值：

② 、对角接触关节轴承,径向额定静载荷为： \mathsf { C } _ { s r } \mathsf { = } \mathsf { f } _ { s } ( \mathsf { B } + \mathsf { C } - \mathsf { T } ) \mathsf { d } \mathsf { m } (N)式中系数fs见下页表格：

当角接触关节轴承承受径向和轴向联合静载荷时，其当量静载荷为： \mathsf { P } _ { \mathsf { r } } \mathsf { = X } _ { \mathsf { r } } \mathsf { \bar { a } } \mathsf { F } _ { \mathsf { l } } (N)，式中 \mathsf { X } _ { \mathsf { r a } } 按下表选取：

SNBAL CALCULATIONOFBASICLOAD RATINGSAND SERVICELIFEOFSPHERICALPLAINBEARING

1.Rated static load and equivalent static load of spherical plain bearing

The general calculation formula of rated static load of spherical plain bearing is: \mathbf { C } s = [ \mathbf { p } ] \mathbf { C } \mathbf { d } \mathbf { m } \mathbf { l } ( \mathbf { \varepsilon } )

① Fortheradialsphericalplainbearing,under theconditionof normalclearance,theaboveformulacanbeconverted as Csr=fsdm(N), \vDash fs([plε,dm),related to factors like bearingmaterial,structure type,radial clearanceand so on.The values offs under the condition ofnormal clearance are listed in the folowing table:

Whenthecombined loadof both radialandaxial directions isappliedon theradial spherical plain bearing,its staticequivalentradial load is: \mathsf { P r } = \mathsf { X } \mathsf { f } , (N),where:thecoefficientX related to Fa/F,the X'value is listed in the following table.:

② 、For the angular-contact spherical plain bearing,rated static radial load is given by:Csr \mathbf { \sigma } = \mathbf { \sigma } fs(B+C-T)dm (N) the values ofcoefficient fsare given in'the following table:

fs Values of angular-contact spherical plain bearing

Whenthecombined loadof both radial andaxial directions isappliedon theangular-contact spherical plain bearing,itsstatic equivalent load is:Pr \mathbf { \bar { \rho } } = \mathbf { \rho } XraFr(N),where:XraXrais giveninthe following table:

③ 、Forthrust spherical plain bearing,rated staticaxial load is: \mathsf { C } _ { s a } = \mathsf { f } _ { s } ( \mathsf { B } + \mathsf { C } - \mathsf { H } ) \mathsf { d } _ { \mathsf { m } } ( \mathsf { N } ) ，Where: coefficientfs isgiveninthe followingtable:

关节轴承额定载荷与寿命计算

当推力关节轴承承受径向和轴向联合静载荷时，其当量静载荷为： ±b { \mathsf { P } } _ { \mathsf { a } } = ±b { \mathsf { Y } } _ { \mathsf { a } } ±b { \mathsf { F } } _ { \mathsf { a } } 式中 ±b { γ _ { \mathsf { a } } } 按下表选取：

④ 、杆端关节轴承的额定静载荷计算方法，应根据杆端关节轴承的结构型式来选择。当杆端关节轴承为向心型时，可采用向心关节轴承的额定静载荷计算公式计算。当杆端关节轴承为球头型时，可采用推力关节轴承的额定静载荷计算公式计算。另外还应考虑杆体材料的屈服强度极限。当轴承的额定静载荷超过杆体材料的屈服强度的许用值时，应取杆体材料屈服强度极限的许用值作为计算杆端关节轴承的额定静载荷。

2、关节轴承额定动载荷与当量动载荷

① 、向心关节轴承的径向额定动载荷为：Cdr * = frCdm(N)

式中系数fr与轴承摩擦副的材料、结构型式、径向游隙等因素有关，下表列出了正常游隙下f值：

当向心关节轴承承受不变的径向和轴向联合载荷时，其当量动载荷为 : \mathsf { P } = \mathsf { X } _ { \mathsf { r } } \mathsf { F } _ { \mathsf { I } } (N)，式中系数 \mathbf { x } _ { { { r } } } 与 F _ { 2 } / F _ { r } 值有关， \mathbf { X } _ { \Gamma } 的取值与当量静载荷中 \mathbf { X } _ { \Gamma } 取值相同。

② 、角接触关节轴承的额定动载荷 \mathsf { C } _ { \mathsf { d r } _ { \prime } } 为： \mathsf { C } _ { \mathsf { d r } } = \mathsf { f } _ { \mathsf { r a } } \bigl ( \mathsf { B } + \mathsf { C } - \mathsf { T } \bigr ) \mathsf { d } _ { \mathsf { m } } ( \mathsf { N } ) 式中系数fra与轴承摩擦副材料及结构尺寸有关，如下页表格列出fra值

当角接触关节轴承承受不变的径向和轴向联合载荷时，其当量动载荷为： \scriptstyle { \mathsf { P } } = \mathbf { X } _ { \mathsf { r a } } { \mathsf { F } } (N)，式中Xra的取值与当量静载荷中Xra取值相同。

SNBAL CALCULATION OFBASICLOAD RATINGSAND SERVICELIFEOFSPHERICALPLAINBEARING

When the combined load of both radial and axial directions isapplied on the thrust spherical plain bearing,its static equivalent load is: ±b { \mathsf { P a } } \mathbf { = Y } \mathbf { _ { a } } ±b { \mathsf { F } } \mathbf { _ { a } } ,where: ±b { γ _ { \mathsf { a } } } is given in the following table:

④ The computationmethodofrated staticloadforrod endbearingshouldbeselectedaccording tothestructuretypeofrod endbearing.Iftherodendbearingisofradialtypeitcanbecalculatedbytheratedstaticloadformulaofradialsphericalplain bearing.lftherodendbearingisofballjointtype,itcanbecalculatedbytheratedstaticoadformulaofthrustsphericalplain bearing.inaddition,theyieldstrengthlimitofbodymaterialshouldbeconsideredWhenthestaticloadratingofspherical plainbearingexceedstheallowablevalueofteyieldstrengthlimitofbodymaterialthealowablvalueofteyieldstrength limitofbody materialshould beselectedasthe basis of calculating therated staticload ofrodendbearing.

2. Rated dynamic load and equivalent dynamic load of spherical plain bearing

① . 、Therated dynamic radial load of the radial spherical plain bearing is: \mathbf { C } _ { { d r } } { = } \mathbf { f } _ { r } \mathbf { C } \mathbf { d } \mathbf { m } ( \mathbf { N } ) （204号 where: frrelated to the factorssuch asmaterialoffriction pair,structure type,radialclearanceand so on.Thevalues offr under the condition of normal clearance are listed in the following table:

When the invariable combined load in both radial and axial direction isapplied on the radial spherical plain bearing,itsdynamic equivalent load is: P = X _ { 1 } F (N),where the coefficient \mathbf { x } _ { { { r } } } isrelated with \mathsf { F } _ { \mathsf { a } } / \mathsf { F } _ { \mathsf { r } _ { \prime } } theXrvalueisthesameasthe \mathbf { X } _ { \Gamma } rvalue inequivalentstaticload formula

② .The rated dynamic load \mathsf { ±b { C } } _ { \sf d r } of angular-contact spherical plain bearing is: \mathsf { C } _ { \mathsf { d r } } = \mathsf { f } _ { \mathsf { r a } } ( \mathsf { B } + \mathsf { C } - \mathsf { T } ) \mathsf { d } _ { \mathsf { m } } ( \mathsf { N } ) , where the coefficient fra is related to the material offriction pairand bore diameterof the bearing, fra values are listed in the following table:

When the invariable combined load in both radial and axial direction is applied on the angularcontact spherical plainbearing,its equivalent dynamic load is: ±b { \mathsf { P } } \mathbf { = } ±b { \mathsf { X } } _ { \mathsf { r a } } ±b { \mathsf { F } } _ { \mathsf { r } } ( ±b { \mathsf { N } } ) ,where the coefficient Xra ravalue is thesameas the \mathsf { X } _ { \mathsf { r a } } ravalue instatic equivalent load formula.

关节轴承额定载荷与寿命计算

③ 、推力关节轴承轴向额定动载荷 \mathbf { \hat { C } } _ { \mathbf { d a } } 为 C _ { { d a } } = f _ { { a } } ( \mathbf { B } + \mathbf { C } - \mathbf { H } ) { d } _ { { m } } (N)式中系数fa与轴承摩擦副材料及结构尺寸有关，如下表所示：

当推力关节轴承承受不变的径向和轴向联合载荷时，其当量载荷为： ±b { \mathsf { P } } ±b { \mathsf { = Y } } ±b { \mathsf { _ { a } F } } ±b { { _ { a } ( N ) } } ，式中Ya取值与当量静载荷中Ya取值相同。

④ 、杆端关节轴承的额定动载荷计算方法，应根据杆端关节轴承的结构型式来选择。当杆端关节轴承为向心型时，可采用向心关节轴承的额定动载荷计算公式计算。当杆端关节轴承为球头型时，可采用推力关节轴承的额定动载荷计算公式计算。

⑤ 、当关节轴承在一个摆动周期内承受变动载荷时，其当量动载荷为:

3、关节轴承寿命计算方法

关节轴承的寿命是指它的摩擦系数达到规定的极限值或轴承的磨损量超过规定的极限值时，轴承工作摆动的总次数。关节轴承的寿命与轴承的承载能力和使用条件有关。

关节轴承的球面滑动速度为: \mathbf { v } { = } 2 . 9 0 8 9 { x } 1 0 ^ { - 4 } 1 βfdm(mm/s)，式中 d _ { m } = \xi { d _ { m } } ，折算系数的值如下表:

关节轴承中的名义接触压力为： \mathsf { P } \equiv \mathsf { k } / { \mathsf { P } } { \mathsf { C } _ { { d } } } ( \mathsf { N } / \mathsf { m } \mathsf { m } ^ { 2 } ) ，式中耐压系数k如下

关节轴承工作表面的pv值必须加以限制，否则轴承会过热，导致轴承寿命缩短，pv值计算公式为：

SNBAL CALCULATIONOFBASICLOAD RATINGSAND SERVICELIFEOFSPHERICALPLAINBEARING

3、The rated dynamic load ±b { C } _ { { d a } } of thrust spherical plain bearing is: C _ { { d a } } = f _ { { a } } ( \mathsf { B } + \mathsf { C } - \mathsf { H } ) \mathsf { d } _ { \mathsf { m } } (N),where the coefficientfaisrelated to thematerial offrictionpairand bore diameter of thebearing,fa valuesare listedout in the following table: fs Values of thrust spherical plain bearing

When the invariable combined load inboth radialand axial direction isapplied on the thrust spherical plain bearing,itsequivalent load is: ±b { \mathsf { P } } \mathbf { = } ±b { \mathsf { Y } } \mathbf { \bar { a } } ±b { \mathsf { F } } \mathbf { a } ( ±b { \mathsf { N } } ) ,where the ±b { γ _ { \mathsf { a } } } value is the same as the ±b { γ _ { \mathsf { a } } } value in static equivalent load formula.

④ 、Thecomputational method of rated dynamic load of rod end bearing should be selected according tothestructuretypeofrodendbearing.Iftherodendbearingisofradialtype,itcanbecalculated bythe rateddynamicload formulaofradial spherical plainbearing.If therod endbearing isofballjoint type,it canbecalculated bythe rated dynamicloadformula of thrust sphericalplain bearing.

⑤ 、when the variable dynamic load is applied on the spherical plain bearing inaswing period,its equivalent dynamic load is:

3. Computational method of spherical plain bearing life

Spherical plain bearing life means,when the friction coefficient reaches thestipulated limit value or the wear loss exceeds the stipulated limit value,the total times that bearing swings.The spherical plain bearing life is related to load capacityand working conditions.

The slide speed of spherical working surface is: \mathbf { v } { = } 2 . 9 0 8 9 { x } 1 0 ^ { - 4 } β \mathbf { f } \mathbf { d } _ { { m } } ( \mathsf {mm } / s ) , where: d _ { m } = \xi { d _ { m } } , thevalues of convert coefficient \xi are listed in the following table:

The nominal contact pressure of spherical plail bearing is: \mathsf P = \mathsf k / { \mathsf P } { \mathsf C _ { \mathsf d } } ( \mathsf N / \mathsf { m } \mathsf { m } ^ { 2 } ) where:pressure resistant coefficientk isas follows :

Values of pressure resistant coefficient k

The pv value of working surface of spherical plain bearing must be restricted,otherwise bearing would be overheated, resulting in shorter life,the formula to calculate pv value is :

关节轴承额定载荷与寿命计算

关节轴承寿命计算:关节轴承的计算磨损寿命L为：

SNBAL CALCULATIONOFBASICLOAD RATINGS AND SERVICE LIFE OF SPHERICAL PLAIN BEARING

The restricted ranges of pv value of diferent material friction pairsare listed in the following table:

Calculation of spherical plain bearing life :

The computational wear life of spherical plainbearingLis :

The coefficientsin the formulaare listed inthe following table.

关节轴承额定载荷与寿命计算

对于需要维护的关节轴承，应定期更换轴承中的润滑剂，此时轴承的寿命估算方法为：LR=αnαβL (摆次)式中系数 α _ { h } 、 α _ { β } 取值如下表：

当关节轴承在分段载荷工作下，其寿命计算为：

式中：Ti一第i段载荷的作用时间；Li一第i段载荷下的计算寿命；nT=T/∑Tii=1n一载荷的分段数

SNBAL CALCULATION OFBASIC LOAD RATINGSAND SERVICELIFEOFSPHERICALPLAINBEARING

For the spherical plain bearing that needs maintenance,the lubricant should be replaced periodically,
herein estimating method of the bearing life is: V _ { R } = \arctan α _ { B } L (swing circles),
where:coefficient α _ { h } 、 α _ { β } is given by following table:

If the spherical plain bearing served undera segmented loading,its life can be calculated by the where:Ti— The acting time of i-th loading segment; Li— The calculating life of -th loading segment; n T=T/∑Ti i=1 n— Number of Load Segments

向心关节轴承RADIAL JOINT BEARING

向心关节轴承是由带有内球面的外圈禾 □带有外球面的内圈构成一对滑动摩擦副，主要用于机械同心度要求不高，工作表面压力较大且又要做低速摆动、倾斜或迥转运动的机械机构中。向心关节轴承的滑动摩擦副可由不同材料组成，主要有两种：润滑型(钢对钢)向心关节轴承和自润滑向心关节轴承。

润滑型(钢对钢)向心关节轴承滑动表面一般经过淬火，磷化和涂敷二硫化钼，具有耐磨损、抗腐蚀的特点。这种轴承在正常情况下，周期性润滑是必须的。由于滑动表面具有很高的强度，这种轴承特别适合于承受交变重载、冲击载荷和静态重载。

The radial jointbearing is composed of anouter ring withan inner spherical surfaceandan inner ring with anouter spherical surface, forming a pair of sliding friction components.It is mainly used in mechanical mechanisms where the concentricity requirementsare not high, the working surface pressureislarge,and low-speed oscillation,inclinationorrotationmovementsneedtobeperformed. Thesliding frictioncomponentsof the radial jointbearing canbemadeof differentmaterials,mainly including two types: lubricated type (steel onsteel) radialjointbearingsand self-lubricating radial joint bearings.

The sliding surfaces of the lubricated (steel-on-steel) radial joint bearings are generally hardened, phosphatedand coated with molybdenum disulfide,featuring wear resistance and corrosion resistance. Under normal circumstances, periodic lubrication is necessary for these bearings. Due to the high strength of the sliding surfaces,these bearingsare particularly suitable for withstanding alternating heavyloads,impactloadsandstaticheavyloads.

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