Principal dimensions

Fatigue load limit

Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil cylindrical bore tapered bore

Spherical roller bearings

299

Dimensions Abutment and fillet dimensions

min. min. max. max.

Calculation factors

300

Principal dimensions

Fatigue load limit

Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil cylindrical bore tapered bore

Spherical roller bearings

301

Dimensions Abutment and fillet dimensions

min. min. max. max.

Calculation factors

302

Principal dimensions Limiting Speeds Mass Designation

Fatigue load limit

Basic load ratings

dynamic static Grease Oil

Sealed spherical roller bearings

303

min. min. max. max. max.

Dimensions Abutment and fillet dimensions Calculation factors

304

Principal dimensions Limiting Speeds Mass Designation

Fatigue load limit

Basic load ratings

dynamic static Grease Oil

Sealed spherical roller bearings

305

min. min. max. max. max.

Dimensions Abutment and fillet dimensions Calculation factors

306

307

308

309

317

补充代号

自调心球轴承

............................................................................................................

.......................................................................................

密封自调心球轴承 .............................................................................

Sealed self-aligning ball bearings

Self-aligning ball bearings

Designation system

TMB EXTRA

TMB拥有30余年材料冶炼技术,与各大高

校研究院合作，研制出新型轴承钢材料。配

合以“D”、“DH\"特殊热处理工艺，TMB EXT

-RA轴承拥有比常规轴承更长的寿命、耐高

温、旋转精度高、低噪音的优点。得益于优

秀的性能，TMB EXTRA 轴承适用于各种高

精度，高要求工况，并已成熟配套多家国内

外高端用户。更多细节敬请咨询当地TMB销

售人员及代理商。

Designation system

E：Optimized internal design

-2RS1：Contact seal, NBR, on both sides

K：Tapered bore, taper 1:12

M：Machined brass cage, ball centred

TN：PA66 cage, ball centred

TN9：Glass fibre reinforced PA66, ball

centred

C2：Radial internal clearance smaller than

Normal

C3：Radial internal clearance greater than

Normal

W64：Solid Oil

308

Principal dimensions

Fatigue load limit

Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil cylindrical bore tapered bore

Self-aligning ball bearings

309

Dimensions Abutment and fillet dimensions

min. min. max. max.

Calculation factors

310

Principal dimensions

Fatigue load limit

Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil cylindrical bore tapered bore

Self-aligning ball bearings

311

Dimensions Abutment and fillet dimensions

min. min. max. max.

Calculation factors

312

Principal dimensions

Fatigue load limit

Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil cylindrical bore tapered bore

Self-aligning ball bearings

313

Dimensions Abutment and fillet dimensions

min. min. max. max.

Calculation factors

314

Principal dimensions

Fatigue load limit

Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil cylindrical bore

Self-aligning ball bearings

315

min. min. max. max.

Dimensions Abutment and fillet dimensions Calculation factors

316

Mass Designation

cylindrical bore tapered bore

Fatigue load limit

Principal dimensions Basic load ratings

dynamic static

Limiting Speeds

Grease Oil

Sealed self-aligning ball bearings

317

min. min. max. max.

Dimensions Abutment and fillet dimensions Calculation factors

318

319

320

321

331

补充代号

单向推力球轴承

............................................................................................................

............................................................................................

............................................................................................

单向推力球轴承-带调心座圈 ................................................................

Single direction thrust ball bearings with a sphered housing washer

双向推力球轴承-带调心座圈 ................................................................ 339

Double direction thrust ball bearings with sphered housing washers

双向推力球轴承 335

Double direction thrust ball bearings

Single direction thrust ball bearings

Designation system

TMB EXTRA

TMB拥有30余年材料冶炼技术,与各大高

校研究院合作，研制出新型轴承钢材料。配

合以“D”、“DH\"特殊热处理工艺，TMB EXT

-RA轴承拥有比常规轴承更长的寿命、耐高

温、旋转精度高、低噪音的优点。得益于优

秀的性能，TMB EXTRA 轴承适用于各种高

精度，高要求工况，并已成熟配套多家国内

外高端用户。更多细节敬请咨询当地TMB销

售人员及代理商。

Designation system

E：Optimized internal design

-2RS1：Contact seal, NBR, on both sides

K：Tapered bore, taper 1:12

M：Machined brass cage, ball centred

TN：PA66 cage, ball centred

TN9：Glass fibre reinforced PA66, ball

centred

C2：Radial internal clearance smaller than

Normal

C3：Radial internal clearance greater than

Normal

W64：Solid Oil

320

Principal dimensions

Fatigue load limit Minimum

load factor

Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil

单向推力球轴承

Single direction thrust ball bearings

321

min. min. max. max.

Dimensions Abutment and fillet dimensions

322

Principal dimensions

Fatigue load limit Minimum

load factor

Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil

单向推力球轴承

Single direction thrust ball bearings

323

min. min. max. max.

Dimensions Abutment and fillet dimensions

324

Principal dimensions

Fatigue load limit Minimum

load factor

Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil

单向推力球轴承

Single direction thrust ball bearings

325

min. min. max. max.

Dimensions Abutment and fillet dimensions

326

Principal dimensions

Fatigue load limit Minimum

load factor

Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil

单向推力球轴承

Single direction thrust ball bearings

327

min. min. max. max.

Dimensions Abutment and fillet dimensions

328

Principal dimensions

Fatigue load limit Minimum

load factor

Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil

单向推力球轴承

Single direction thrust ball bearings

329

min. min. max. max.

Dimensions Abutment and fillet dimensions

330

Principal dimensions Basic load ratings Limiting Speeds Mass Designation

dynamic static Fatigue load limit Minimum

load factor Grease Oil Bearing incl.

washer

Single direction thrust ball bearings with a sphered housing washer

331

min. min. max. max.

Dimensions Abutment and fillet dimensions

332

Principal dimensions Basic load ratings Limiting Speeds Mass Designation

dynamic static Fatigue load limit Minimum

load factor Grease Oil Bearing incl.

washer

Single direction thrust ball bearings with a sphered housing washer

333

min. min. max. max.

Dimensions Abutment and fillet dimensions

334

Double direction thrust ball bearings

Principal dimensions Basic load ratings Limiting Speeds Mass Designation

Fatigue load limit Minimum

load factor Grease Oil

335

min. min. min. max. max. max.

Dimensions Abutment and fillet dimensions

336

Principal dimensions Basic load ratings Limiting Speeds Mass Designation

Fatigue load limit Minimum

load factor Grease Oil

Double direction thrust ball bearings

dynamic static

337

min. min. min. max. max. max.

Dimensions Abutment and fillet dimensions

338

Principal dimensions Basic load ratings Mass Designation

Fatigue load limit Minimum

load factor

Limiting Speeds

Grease Oil

Double direction thrust ball bearings with sphered housing washers

Bearing incl.

washer

339

min. min. min. max. max. max.

Dimensions Abutment and fillet dimensions

340

341

342

343

补充代号

圆柱滚子推力轴承

............................................................................................................

....................................................................................... Cylindrical roller thrust bearings

Designation system

TMB EXTRA

TMB拥有30余年材料冶炼技术,与各大高

校研究院合作，研制出新型轴承钢材料。配

合以“D”、“DH\"特殊热处理工艺，TMB EXT

-RA轴承拥有比常规轴承更长的寿命、耐高

温、旋转精度高、低噪音的优点。得益于优

秀的性能，TMB EXTRA 轴承适用于各种高

精度，高要求工况，并已成熟配套多家国内

外高端用户。更多细节敬请咨询当地TMB销

售人员及代理商。

Designation system

M：Machined brass cage

TN：Glass fibre reinforced PA66 cage

P5：Dimensional and running accuracy to

P5 tolerance class

342

Fatigue load limit Minimum

load factor

Principal dimensions Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil Bearing incl.

washer

Cylindrical roller thrust bearings

343

min. min. max. max.

Dimensions Abutment and fillet dimensions Designation of components

Cylindrical roller and

cage thrust assembly

Housing

washer

Universal

washer

344

Fatigue load limit Minimum

load factor

Principal dimensions Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil Bearing incl.

washer

Cylindrical roller thrust bearings

345

min. min. max. max.

Dimensions Abutment and fillet dimensions Designation of components

Cylindrical roller and

cage thrust assembly

Housing

washer

Universal

washer

346

Fatigue load limit Minimum

load factor

Principal dimensions Basic load ratings Limiting Speeds Mass Designation

dynamic static Grease Oil Bearing incl.

washer

Cylindrical roller thrust bearings

347

min. min. max. max.

Dimensions Abutment and fillet dimensions Designation of components

Cylindrical roller and

cage thrust assembly

Housing

washer

Universal

washer

348