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Four-row Tapered Roller Bearings

Four-row Tapered Roller Bearings

  • The performance of four-row tapered roller bearings is basically the same as that of double-row tapered roller bearings, but the radial load is greater than that of double-row tapered roller bearings, and the limiting speed is slightly lower. It is mainly used in heavy machinery, rolling mills, etc. Four-row tapered roller bearings are suitable for low-speed and medium-speed rolling mills. The internal clearance of the bearings is pre-adjusted, easy to use, and designed to withstand the maximum rated load in a limited installation space. Four-row tapered roller bearings (open type) are include three outer rings, two inner rings, four rows rollers, two outer spacers, and one inner spacer. Sealed bearings are added with two sealing rings. The clearance of four-row tapered roller bearings can be adjusted with two outer spacers and one inner spacer. This ensures the rotation accuracy and normal operation of the machine parts, and greatly extends the service life of the bearings.
Product Details

Bearing Code

Dimensions

Basic Load Rating

Weight (Reference)

mm

KN

d

D

T

B

Cr

Cor

kg

LM247748DW/LM247710/LM247710D

244.475

327.025

193.675

193.675

1720

4200

44.1

EE126096D/126150/126151D

244.475

381

304.8

304.8

2700

5870

125

EE220975D/221575/221576D

247.65

400.05

253.995

249.235

2600

5140

119

HM252340D/HM252315/HM252315D

250.825

431.724

298.453

292.895

3470

6720

181

M249748DW/M249710/M249710D

254

358.775

269.875

269.875

2700

6900

90

EE171000D/171450/171451D

254

368.3

204.47

204.622

1740

3700

73.6

HM252343D/HM252310/HM252311D

254

422.275

305.595

292.895

3470

6720

165

HM252343D/HM252310/HM252310D

254

422.275

311.15

298.45

3470

6720

168

HM252342D/HM252310/HM252310D

254

422.275

317.5

314.325

3470

6720

171

HM252344D/HM252315/HM252315D

254

431.724

298.453

292.895

3470

6720

179

EE822101D/822175/822176D

254

444.5

279.4

279.4

2950

5540

180

EE134103D/134143/134144D

260.35

365.125

228.6

228.6

1940

4300

72

EE221025D/221575/221576D

260.35

400.05

253.995

249.235

2600

5140

109

EE221027D/221575/221576D

260.35

400.05

253.995

255.585

2600

5140

110

HM252347D/HM252310/HM252311D

260.35

422.275

305.595

292.895

3470

6720

159

HM252347D/HM252310/HM252310D

260.35

422.275

311.15

298.45

3470

6720

162

HM252348D/HM252310/HM252310D

260.35

422.275

317.5

314.325

3470

6720

166

HM252349D/HM252310/HM252310D

260.35

422.275

317.5

314.325

3470

6720

166

HM252347D/HM252315/HM252315D

260.35

431.724

298.453

292.895

3470

6720

173

LM451349DW/LM451310/LM451310D

266.7

355.6

228.6

230.188

1940

5340

65.3

76589D/76520/76520D

266.7

355.6

228.6

230.188

1980

4830

58.3

EE275106D/275155/275156D

266.7

393.7

269.878

269.878

2530

6170

108

EE275106D/275160/275161D

266.7

406.4

260.335

268.29

2530

6170

128

M252349D/M252310/M252310D

269.875

381

282.575

282.575

2860

7360

104

EE275109DW/275155/275156D

276.225

393.7

269.878

269.878

2810

6350

110

EE275109D/275160/275161D

276.225

406.4

260.335

268.29

2530

6170

119

EE135111DW/135155/135156D

279.4

393.7

269.875

269.875

2410

5560

99

EE722111D/722185/722186D

279.4

469.9

349.25

346.075

4210

8740

247

EE722112D/722185/722186D

279.4

469.9

390.525

384.175

4210

8740

265

EE941106D/941950/941951XD

279.4

495.3

285.75

282.735

3500

6440

236

EE941106D/941950/941952XD

279.4

495.3

292.1

289.085

3500

6440

240

LM654644DW/LM654610/LM654610D

279.578

380.898

244.475

244.475

2120

5980

86

LM654648DW/LM654610/LM654610D

285.75

380.898

244.475

244.475

2120

5980

80

EE921151D/921850/921851D

285.75

469.9

292.1

296.047

3910

6920

201

EE921126D/921875/921876D

285.75

476.25

292.1

296.047

3910

6920

211

M255449DW/M255410/M255410D

288.925

406.4

298.45

298.45

3410

8740

127

EE330116D/330166/330167D

292.1

422.275

269.875

269.875

3300

7820

125

EE291176D/291750/291751D

298.45

444.5

241.3

238.125

2470

5520

131

EE129119D/129174/129175XD

299.974

439.949

279.4

280.988

2700

6450

145

HM256849D/HM256810/HM256810D

300.038

422.275

311.15

311.15

3520

9200

131

M757448DW/M757410/M757410D

304.648

438.048

279.4

280.99

2920

7820

130

EE129121D/129172/129173D

304.648

438.048

279.4

280.988

2700

6450

137

M257149DW/M257110/M257110D

304.8

419.1

269.875

269.875

3140

7910

108

EE291200D/291750/291751D

304.8

444.5

241.3

238.125

2470

5520

125

EE291202D/291750/291751D

304.8

444.5

241.3

247.65

2470

5520

127

330693C

304.8

482.6

377.825

365.125

4730

10500

265

EE941206D/941950/941951XD

304.8

495.3

285.75

282.735

3760

7690

217

EE941206D/941950/941952XD

304.8

495.3

292.1

289.085

3760

7690

221

EE941207D/941950/941952XD

304.8

495.3

292.1

295.435

3500

6440

215

EE724121D/724195/724196D

304.8

495.3

349.25

342.9

4370

9370

283

HM258949D/HM258910HM258910D

304.8

501.65

336.545

336.55

4870

9420

264

M257248DW/M257210/M257210D

304.902

412.648

266.7

266.7

2860

7640

109

EE129123D/129172/129173D

305.003

438.048

279.4

280.988

2700

6450

137

M757449DW/M757410/M757410D

305.003

438.048

279.4

280.99

3230

6980

131

BT4B332642/HA1

317.5

422.275

261.938

290.514

2920

7910

110

LM258648DW/LM258610/LM258610D

317.5

422.275

269.875

269.875

2920

7910

86

HM259049D/HM259010/HM259010D

317.5

447.675

327.025

327.025

4130

10500

166

BT332654/HA1

320.411

488.95

342.9

384.175

4570

12300

240

EE526129D/526190/526191D

327.025

482.6

311.15

306.388

3700

8190

192

M260149DW/M260110/M260110D

330.2

444.5

301.625

301.625

3230

7920

132

EE526131D/526190/526191D

330.2

482.6

311.15

306.388

3700

8190

188

EE138131D/138172/138173XD

330.302

438.023

254

247.65

2460

6990

110

HM261049DW/HM261010/HM261010D

333.375

469.9

342.9

342.9

4630

11400

196

LM761648/LM761610/LM761610D

341.312

457.098

254

254

2930

7250

109

LM761649D/LM761610/LM761610D

343.052

457.098

254

254

2930

7250

109

EE133137D/133180/133181D

346.075

457.098

254

254

2850

6950

102

HM262749D/HM262710/HM262710D

346.075

488.95

358.775

358.775

4550

11200

225

LM262449DW/LM262410/LM262410D

347.662

469.9

260.35

260.35

3100

7500

130

M262449DW/M262410/M262410D

347.662

469.9

292.1

292.1

3400

8400

142

L163149D/L163110/L163110CD

355.6

444.5

241.3

241.3

2220

6890

88

LM263149D/LM263110/LM263110D

355.6

457.2

252.412

252.412

2790

7550

107

LM763449DW/LM763410/LM763410D

355.6

482.6

269.875

265.112

3060

7020

136

M263349DW/M263310/M263310D

355.6

488.95

317.5

317.5

4370

10900

179

EE231401D/232025/232026D

355.6

514.35

260.35

244.475

2710

6560

177

EE161403D/161900/161901D

356.387

482.6

222.25

219.075

2100

4990

116

HM265049DW/HM265010/HM265010D

368.3

523.875

382.588

382.588

5460

13600

275

EE181454D/182350/182351D

368.3

596.9

342.9

336.55

4830

9310

347

LM765149DW/LM765110/LM765110D

374.65

501.65

260.35

250.825

2710

6560

141

EE231475D/232025/232026D

374.65

514.35

260.35

250.825

2710

6560

158

HM266449DW/HM266410/HM266410D

384.175

546.1

400.05

400.05

6530

16900

318

LM665949DW/LM665910/LM665910D

385.762

514.35

317.5

317.5

4130

10800

187

EE234157D/234215/234216D

393.7

546.1

288.925

268.288

2970

7620

200

LM767745D/LM767710/LM767710D

393.7

546.1

288.925

288.925

3680

9390

205

EE234157D/234220/234221D

393.7

558.8

254

255.588

2970

7620

205

EE234161D/234215/234216D

406.4

546.1

288.925

268.288

2970

7620

184

LM767749DW/LM767710/LM767710D

406.4

546.1

288.925

288.925

3680

9390

188

EE234161D/234220/234221D

406.4

558.8

254

255.588

2970

7620

189

M267949D/M267910/M267910D

406.4

565.15

381

381

5990

15000

300

EE833161D/833232/833233D

406.4

590.55

400.05

400.05

6120

14100

370

EE911603D/912400/912401D

406.4

609.6

317.5

309.563

4890

10600

320

M667947D/M667910/M667910D

409.575

546.1

334.962

334.962

4570

11500

217

M268749DW/M268710/M268710D

415.925

590.55

434.975

434.975

6780

17900

396

LM869449DW/LM869410/LM869410D

431.8

571.5

279.4

279.4

3360

8600

194

LM769349DW/LM769310/LM769310D

431.8

571.5

336.55

336.55

4290

11300

239

EE931170D/931250/931251XD

431.8

635

355.6

355.6

6310

13700

385

EE736173D/736238/736239D

432.003

609.524

317.5

317.5

5210

12100

293

M270749DW/M270710/M270710D

447.675

635

463.55

463.55

7860

21000

485

EE425176D/425299/425299D

456.794

761.873

527.05

527.05

11100

22500

980

L770847DW/L770810/L770810D

457.2

596.9

279.4

276.225

3850

10500

190

EE737179D/737260/737261D

457.2

660.4

323.847

323.85

5700

12700

354

EE671802D/672873/672875D

457.403

730.148

419.1

412.75

8290

16500

646

M271149D/M271110/M271110D

460

625

421

421

6550

17600

378

M272749DW/M272710/M272710D

479.425

679.45

495.3

495.3

8480

22200

604

LM272248DW/LM272210/LM272210D

482.6

615.95

330.2

330.2

4850

14200

235

M272449D/M272410/M272410D

482.6

635

421

421

7090

20300

358

M272647DW/M272610/M272610D

482.6

647.7

417.512

417.512

7390

20300

400

EE640193D/640260/640261D

488.95

660.4

361.95

365.125

6200

15800

339

EE243193D/243250/243251D

489.026

634.873

320.675

320.675

4520

13200

258

LM772749DW/LM772710/LM772710D

489.026

634.873

320.675

320.675

4930

13700

258

EE641198D/641265/641266D

501.65

673.1

387.35

400.05

6670

17300

395

M274149DW/M274110/M274110D

501.65

711.2

520.7

520.7

9610

25600

691

EE531201D/531300/531301D

508

762

463.55

463.55

9260

19900

741

LM274449DW/LM274410/LM274410D

514.35

673.1

422.275

422.275

7130

20300

400

M275349D/M275310/M275310D

519.112

736.6

536.575

536.575

10600

27200

791

LM275349D/LM275310/LM275310D

520.7

711.2

400.05

400.05

7000

17500

438

M276449D/M276410/M276410D

536.575

761.873

558.8

558.8

11300

28800

835

EE843221DW/843290/843291D

558.8

736.6

322.268

322.268

5920

16100

378

LM377449DW/LM377410/LM377410D

558.8

736.6

409.575

409.575

7180

19700

482

LM277149DA/LM277110/LM277110D

558.8

736.6

457.2

457.2

8990

25500

545

M278749DW/M278710/M278710D

571.5

812.8

593.725

593.725

13000

35000

1007

LM778549DW/LM778510/LM778510D

584.2

762

401.638

396.875

7330

20800

468

LM278849D/LM278810/LM278810D

585.788

771.525

479.425

479.425

9140

25600

606

M280049D/M280010/M280010D

595.312

844.55

615.95

615.95

13600

36900

1155

M280249D/M280210/M280210D

603.25

857.25

622.3

622.3

14500

38500

1235

EE649241DW/649310/649311D

609.6

787.4

361.95

361.95

6790

19900

467

LM280249DW/LM280210/LM280210D

609.6

813.562

479.425

479.425

9350

27100

715

M280349D/M280310/M280310D

609.6

863.6

660.4

660.4

14700

41000

1263

M281049DW/M281010/M281010D

635

901.7

654.05

654.05

15500

43500

1437

LM281049DW/LM281010/LM281010D

646.112

857.25

542.925

542.925

11500

34500

873

M281349D/M281310/M281310D

649.924

914.898

674

672

15900

43800

1437

M281649D/M281610/M281610D

657.225

933.45

676.275

676.275

17300

46000

1546

EE749259DW/749334/749335D

659.925

854.923

318.48

319.192

6240

16000

457

EE749259D/749334/749335D

660

855

318.48

319.192

6050

17100

490

L281149D/L281110/L281110D

660.4

812.8

365.125

365.125

6860

21100

415

EE428262D/428420/428421XD

 

1066.8

647.703

638.175

18400

39400

2250

LM281849DW/LM281810/LM281810D

679.45

901.7

552.45

552.45

12800

36100

1005

M282249D/M282210/M282210D

682.625

965.2

701.675

701.675

17700

50000

1736

EE655271D/EE655345/EE655346D

685.8

876.3

355.6

352.425

7390

23100

579

LM282549D/LM282510/LM282510D

708.025

930.275

565.15

565.15

12900

39300

1061

L882449DW/L882410/L882410D

710

900

410

410

9190

27300

633

EE755281D/755360/755361D

711.2

914.4

317.5

317.5

6030

17900

537

M383240DGW/M383210/M383210D

714.375

1016

704.85

704.85

19500

52200

1950

LM282847DW/LM282810/LM282810D

717.55

946.15

565.15

565.15

13600

39500

1090

M283449DW/M283410/M283410D

730.25

1035.05

755.65

755.65

19600

54300

2170

LM283649D/LM283610/LM283610D

749.3

990.6

605

605

15700

47700

1328

EE325296DGW/325420/325421XD

749.3

1066.8

736.6

723.9

20600

58000

2250

M284148DW/M284111/M284110D

762

1066.8

736.6

723.9

21000

59500

2145

M284249DW/M284210/M284210D

762

1079.5

787.4

787.4

22800

63500

2480

M285848DW/M285810/M285810D

825.5

1168.4

844.55

844.55

25900

76000

3050

LM286249DW/LM286210/LM286210D

863.6

1130.3

669.925

669.925

19600

62000

1900

LM286449DW/LM286410/LM286410D

863.6

1181.1

666.75

666.75

19600

62000

2150

EE547341D/547480/547481D

863.6

1219.2

889

876.3

28500

84600

3470

EE634356D/634510/634511D

901.7

1295.4

914.4

901.7

30500

88000

4170

LM287649D/LM287610/LM287610D

938.212

1270

825.5

825.5

26100

79500

3230

LM287849DW/LM287810/LM287810D

939.8

1333.5

952.5

952.5

31500

92000

4510

LM288249D/LM288210/LM288210D

1006.475

1295.4

764

764

23100

76500

2590

LM288949D/LM288910/LM288910D

1200.15

1593.85

990.6

990.6

39500

128000

5635

Four-row tapered roller bearings can withstand extremely large radial loads and axial loads in both directions. Two rows of rolling elements bear the axial load in this direction, and the axial load in the opposite direction is borne by two other rows of rolling elements. If the clearance in the bearing is not appropriate, the axial load can only be borne by one of the rows of rolling elements. Obviously, this increases the pressure between the rolling elements in this row and the inner and outer rings of the bearing. It has a very adverse effect on the life of the bearing. Therefore, it is necessary to check the clearance of this type of bearing during installation. Four-row tapered roller bearings have higher load-bearing capacity, longer service life, unique maintenance and inspection methods, and improved sealing characteristics. Four-row tapered roller bearings are precision mechanical parts, so they should be handled with caution during installation and disassembly.

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