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Inch series Four-row tapered roller bearingsInch series Four-row tapered roller bearingsInch series Four-row tapered roller bearingsInch series Four-row tapered roller bearings
Inch series Four-row tapered roller bearingsInch series Four-row tapered roller bearingsInch series Four-row tapered roller bearingsInch series Four-row tapered roller bearings

Inch series Four-row tapered roller bearings

Four row tapered roller bearings are also roller diameter bearings widely used. The type of bearing has a large carrying capacity and can carry the combined radial and axial loads mainly consisting of radial load at the same time. 
They  are mainly used for work rolls and support rolls of various plate and strip rolling mills and roughing mills. Adjusting the thickness of the spacer ring and the clearance of the bearing make such bearing more suitable for the working conditions.

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Specifications|Product introduction|Related products|Inquiry
Specifications
Inch series Four-row tapered roller bearings
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Dimensions

Basic load

ratings

Designations

 Installation dimensions

Calculated constant

Axial load factors

Mass

mm

kN

dbmax

Damin

ramax

rbmax

e

Y2

Y3

Y0

kg

d

D

T

B

rmin

r1min

Cr

Cor

244.475

327.025

193.675

193.675

1.5

3.3

1720

4200

LM247748DW/LM247710/LM247710D

264.3

304.6

3.2

1.6

0.32

2.1

3.13

2.06

44.1

 

381.000

304.800

304.80

3.2

4.8

2700

5870

EE126096D/126150/126151D

268.3

336.7

4.8

3.2

0.52

1.31

1.95

1.28

125

247.650

400.050

253.995

249.235

1.6

6.4

2600

5140

EE220975D/221575/221576D

291.8

359.1

6.4

1.6

0.39

1.71

2.54

1.67

119

250.825

431.724

298.453

292.895

3.6

3.6

3470

6720

HM252340D/HM252315/HM252315D

305.3

384.5

3.6

3.6

0.33

2.03

3.02

1.98

181

254.00

358.775

269.875

269.875

1.5

3.3

2700

6900

M249748DW/M249710/M249710D

276.3

330.1

3.2

3.2

0.33

2.03

3.02

1.98

90

 

368.300

204.470

204.622

1.6

3.2

1740

3700

EE171000D/171450/171451D

277.7

327.8

3.2

1.6

0.36

1.86

2.77

1.82

73.6

 

422.275

305.595

292.895

1.6

3.2

3470

6720

HM252343D/HM252310/HM252311D

305.3

384.3

3.2

3.6

0.33

2.03

3.02

1.98

165

 

422.275

311.150

298.450

3.6

3.2

3470

6720

HM252343D/HM252310/HM252310D

305.3

384.3

3.2

3.6

0.33

2.03

3.02

1.98

168

 

422.275

317.500

314.325

6.7

3.2

3470

6720

HM252342D/HM252310/HM252310D

303

384.3

3.2

6.7

0.33

2.03

3.02

1.98

171

 

431.724

298.453

292.895

3.6

3.6

3470

6720

HM252344D/HM252315/HM252315D

305.3

384.5

3.6

3.6

0.33

2.03

3.02

1.98

179

 

444.500

279.400

279.400

3.2

6.4

2950

5540

EE822101D/822175/822176D

310.9

392.1

6.4

3.2

0.42

1.62

2.42

1.59

180

260.350

365.125

228.600

228.600

3.2

6.4

1940

4300

EE134103D/134143/134144D

282.9

346.3

6.4

3.2

0.37

1.80

2.69

1.76

72

 

400.050

253.995

249.235

6.4

6.4

2600

5140

EE221025D/221575/221576D

291.8

359.1

6.4

6.4

0.39

1.71

2.54

1.67

109

 

400.050

253.995

255.585

1.6

6.4

2600

5140

EE221027D/221575/221576D

290.4

359.1

6.4

1.6

0.39

1.71

2.54

1.67

110

 

422.275

305.595

292.895

3.6

3.2

3470

6720

HM252347D/HM252310/HM252311D

305.4

384.3

3.2

3.6

0.33

2.03

3.02

1.98

159

 

422.275

311.150

298.450

3.6

3.2

3470

6720

HM252647D/HM252310/HM252310D

305.4

384.3

3.2

3.6

0.33

2.03

3.02

1.98

162

 

422.275

317.500

314.325

6.4

3.2

3470

6720

HM252348D/HM252310/HM252310D

303.2

384.3

3.2

6.4

0.33

2.03

3.02

1.98

166

 

422.275

317.500

314.325

6.4

3.2

3470

6720

HM252349D/HM252310/HM252310D

303.3

384.3

3.2

6.4

0.33

2.03

3.02

1.98

166

 

431.724

298.453

292.895

3.6

3.6

3470

6720

HM252347D/HM252315/HM252315D

305.3

384.5

3.6

3.6

0.33

2.03

3.02

1.98

173

266.7

355.60

228.6

230.188

1.5

3.3

1940

5340

LM451349DW/LM451310/LM451310D

283.8

332

3.2

1.6

0.36

1.87

2.79

1.83

65.3

 

355.60

228.600

230.188

1.6

3.2

1980

4830

76589D/76520/76520D

283.8

331.9

3.2

1.6

0.37

1.83

2.73

1.79

58.3

 

393.70

269.878

269.878

3.2

6.4

2530

6170

EE275106D/275155/275156D

308.6

364.4

6.4

3.2

0.40

1.68

2.50

1.64

108

 

406.40

260.335

268.290

3.2

6.4

2530

6170

EE275106D/275160/275161D

309

365.4

6.4

3.2

0.40

1.68

2.50

1.64

128

269.875

381

282.575

282.575

3.3

3.3

2860

7360

M252349D/M252310/M252310D

290.5

350.8

3.2

3.2

0.33

2.03

3.02

1.98

104

276.225

393.700

269.878

269.878

1.5

6.4

2810

6350

EE275109DW/275155/275156D

308.6

364.4

6.4

1.6

0.40

1.68

2.50

1.64

110

 

406.40

260.335

268.290

1.6

6.4

2530

6170

EE275109D/275160/275161D

309

365.4

6.4

1.6

0.40

1.68

2.50

1.64

119

279.400

393.700

269.875

269.875

1.5

6.4

2410

5560

EE135111DW/135155/135156D

303.9

360.9

6.4

1.6

0.38

1.77

2.64

1.73

99

 

469.90

349.250

346.075

6.4

3.2

4210

8740

EE722111D/722185/722186D

328.4

412.5

3.2

6.4

0.38

1.79

2.67

1.75

247

 

469.90

390.525

384.175

9.5

3.2

4210

8740

EE722112D/722185/722186D

324.9

412.5

3.2

9.5

0.38

1.79

2.67

1.75

265

 

495.30

285.750

282.735

1.6

3.2

3500

6440

EE941106D/941950/941951XD

349.3

440.5

3.2

1.6

0.40

1.68

2.50

1.64

236

 

495.30

292.10

289.085

1.6

3.2

3500

6440

EE941106D/941950/941952XD

349.3

440.5

3.2

1.6

0.40

1.68

2.5

1.64

240

279.578

380.898

244.475

244.475

1.5

3.3

2120

5980

LM654644DW/LM654610/LM654610D

302.4

356.1

3.2

1.6

0.43

1.57

2.34

1.53

86

285.750

380.898

244.475

244.475

1.5

3.3

2120

5980

LM654648DW/LM654610/LM654610D

302.4

356.1

3.2

1.6

0.43

1.57

2.34

1.53

80

 

469.90

292.100

296.047

1.6

3.2

3910

6920

EE921151D/921850/921851D

333.5

429

3.2

1.6

0.29

2.31

3.44

2.26

201

 

476.250

292.100

296.047

1.6

3.2

3910

6920

EE921126D/921875/921876D

333.5

429

3.2

1.6

0.29

2.31

3.44

2.26

211

288.925

406.400

298.450

298.450

3.3

3.3

3410

8740

M255449DW/M255410/M255410D

315.3

373.9

3.2

3.2

0.34

2.0

2.97

1.95

127

292.1

422.275

269.875

269.875

6.4

3.2

3300

7820

EE330116D/330166/330167D

320.6

387.9

3.2

6.4

0.32

2.11

3.14

2.06

125

298.450

444.50

241.30

238.125

7.9

1.6

2470

5520

EE291176D/291750/291751D

344

403.5

1.6

7.9

0.38

1.79

2.66

1.75

131

299.974

439.949

279.400

280.988

3.2

4.8

2700

6450

EE129119D/129174/129175XD

338.1

400.5

4.8

3.2

0.40

1.68

2.50

1.64

145

300.038

422.275

311.150

311.150

3.3

3.3

3520

9200

HM256849D/HM256810/HM256810D

323.8

388.3

3.2

3.2

0.34

2.0

2.98

1.96

141

304.648

438.048

279.400

280.990

3.3

4.8

2920

7820

M757448DW/M757410/M757410D

328.9

403.8

4.8

3.2

0.47

1.44

2.15

1.41

130

 

438.048

279.400

280.988

3.2

4.8

2700

6450

EE129121D/129172/129173D

338.1

400.5

4.8

3.2

0.40

1.68

2.50

1.64

137

304.800

419.100

269.875

269.875

1.5

6.4

3140

7910

M257149DW/M257110/257110D

330.1

387.3

6.4

1.6

0.33

2.03

3.02

1.98

108

 

444.50

241.300

238.125

7.9

1.6

2470

5520

EE291200D/291750/291751D

344

403.5

1.6

7.9

0.38

1.79

2.66

1.75

125

 

444.50

241.30

247.650

7.9

1.6

2470

5520

EE291202D/291750/291751D

342

403.5

1.6

7.9

0.38

1.79

2.66

1.75

127
 
Dimensions Basic load Designations  Installation dimensions Calculated constant Axial load factors Mass
ratings
mm kN 　 dbmax Damin ramax rbmax e Y2 Y3 Y0 kg
d D T B rmin r1min Cr Cor 　 　 　 　 　 　 　 　 　 　
355.6 444.5 241.3 241.3 1.5 3.3 2220 6890 L163149D/L163110/L163110CD 370 422 3.2 1.6 0.31 2.2 3.27 2.15 88
　 457.2 252.412 252.412 1.5 3.3 2790 7550 LM263149D/LM263110/LM263110D 370 435 3.3 1.5 0.32 2.1 3.2 2.1 107
　 482.6 265.112 269.875 1.5 3.3 3060 7020 LM763449DW/LM763410/LM763410D 379.9 450.4 3.2 1.6 0.47 1.43 2.14 1.4 136
　 488.95 317.5 317.5 1.5 3.3 4370 10900 M263349DW/LM263310/LM263310D 382.2 452.7 3.2 1.6 0.33 2.03 3.02 1.98 179
　 514.35 260.35 244.475 3.2 3.2 2710 6560 EE231401D/232025/232026D 404.5 465.8 3.2 3.2 0.44 1.53 2.28 1.5 177
356.387 482.6 222.25 219.075 1.6 6.4 2100 4990 EE161403D/161900/161901D 382.7 440.7 6.4 1.6 0.5 1.35 2.01 1.32 116
368.3 523.875 382.588 382.588 3.3 6.4 5460 13600 HM265049DW/HM265010/HM265010D 401.8 483.6 6.4 3.2 0.33 2.03 3.02 1.98 275
　 596.9 342.9 336.55 6.4 6.4 4830 9310 EE181454D/182350/182351D 426.8 535 6.4 6.4 0.42 1.62 2.42 1.59 347
374.65 501.65 260.35 250.825 1.5 3.3 2710 6560 LM765149DW/LM765110/LM765110D 402.9 465.8 3.2 1.6 0.44 1.53 2.28 1.5 141
　 514.35 260.35 250.825 1.6 3.2 2710 6560 EE231475D/232025/232026D 402.9 465.8 3.2 1.6 0.44 1.53 2.28 1.5 158
384.175 546.1 400.05 400.05 3.3 6.4 6530 16900 HM266449DW/HM266410/HM266410D 418.7 502 6.4 3.3 0.33 2.03 3.02 1.98 318
385.762 514.35 317.5 317.5 3.3 3.3 4130 10800 LM665949DW/LM665910/LM665910D 406 477.2 3.3 3.3 0.42 1.61 2.4 1.58 187
393.7 546.1 288.925 268.288 3.2 6.4 2970 7620 EE234157D/234215/234216D 436.4 497.6 6.4 3.2 0.48 1.42 2.11 1.39 200
　 546.1 288.925 288.925 1.6 6.4 3680 9390 LM767745D/LM767710/LM767710D 434.5 510 6.4 1.6 0.48 1.42 2.11 1.39 205
　 558.8 254 255.588 3.2 6.4 2970 7620 EE234157D/234220/234221D 436.4 505 6.4 3.2 0.48 1.42 2.11 1.39 205
406.4 546.1 288.925 268.288 1.6 6.4 2970 7620 EE234161D/234215/234216D 435.8 497.6 6.4 1.6 0.48 1.42 2.11 1.39 184
　 546.1 288.925 288.925 1.5 6.4 3680 9390 LM767749DW/LM767710/LM767710D 433.2 507 6.4 1.6 0.48 1.42 2.11 1.39 188
　 558.8 254 255.588 1.6 6.4 2970 7620 EE234161D/234220/234221D 436.4 505 6.4 1.6 0.48 1.42 2.11 1.39 189
　 565.15 381 381 3.2 6.4 5990 15000 M267949D/M267910/M267910D 438.3 524 6.4 3.2 0.33 2.03 3.02 1.98 300
　 590.55 400.05 400.05 3.2 6.4 6120 14100 EE833161D/833232/833233D 447.5 543 6.4 3.2 0.32 2.08 3.1 2.04 370
　 609.6 317.5 309.563 3.6 6.4 4890 10600 EE911603D/912400/912401D 460.7 555 6.4 3.6 0.38 1.76 2.62 1.72 320
409.575 546.1 334.962 334.962 1.5 6.4 4570 11500 M667947D/M667910/M667910D 431.6 510 6.4 1.6 0.42 1.62 2.42 1.59 217
415.925 590.55 434.975 434.975 3.3 6.4 6780 17900 M268749DW/M268710/M268710D 455.2 543 6.4 3.3 0.33 2.03 3.02 1.98 396
431.8 571.5 279.4 279.4 1.5 3.3 3360 8600 LM869449DW/LM869410/LM869410D 469 534 3.2 1.6 0.55 1.24 1.84 1.21 188
　 571.5 336.55 336.55 1.5 6.4 4290 11300 LM769349DW/LM769310/LM769310D 462.7 535 6.4 1.6 0.48 1.41 2.1 1.38 239
　 635 355.6 355.6 6.4 6.4 6310 13700 EE931170D/931250/931251XD 480.5 586 6.4 6.4 0.32 2.1 3.13 2.06 385
432.003 609.524 317.5 317.5 3.6 6.4 5210 12100 EE736173D/736238/736239D 472.7 562 6.4 3.6 0.35 1.94 2.89 1.9 293
447.675 635 463.55 463.55 3.3 6.4 7860 21000 M270749DW/M270710/M270710D 490.1 584 6.4 3.3 0.33 2.03 3.02 1.98 485
456.794 761.873 527.05 527.05 3.2 6.4 11100 22500 EE425176D/425299/425299D 520 685 6.4 3.2 0.44 1.52 2.26 1.49 980
457.2 596.9 279.4 276.225 1.5 3.3 3850 10500 L770847DW/L770810/L770810D 488 555 3.3 1.5 0.47 1.4 2.1 1.4 190
　 660.4 323.847 323.85 3.2 6.4 5700 12700 EE737179D/737260/737261D 500 603 6.4 3.2 0.37 1.8 2.69 1.76 354
457.403 730.148 419.1 412.75 1.6 6.4 8290 16500 EE671802D/672873/672875D 515 660 6.4 1.6 0.39 1.72 2.57 1.69 646
460 625 421 421 3 9 6550 17600482 M271149D/M271110/M271110D 482 584 9 3 0.33 2 3 2 378
479.425 679.45 495.3 495.3 3.3 6.4 8480 22200 M272749DW/M272710/M272710D 523 627 6.4 3.3 0.33 2.03 3.02 1.98 604
482.6 615.95 330.2 330.2 6.4 6.4 4850 14200 LM272248DW/LM272210/LM272210D 510 575 6.4 6.4 0.33 2.03 3.02 1.98 235
　 635 421 421 3 6.4 7090 20300 M272449D/M272410/M272410D 510 595 6.4 3 0.33 2.03 3.02 1.98 358
　 647.7 417.512 417.512 3.3 6.4 7390 20300 M272647DW/M272610/M272610D 514 604 6.4 3.3 0.33 2.03 3.02 1.98 400
488.95 660.4 361.95 365.125 7.9 6.4 6200 15800 EE640193D/640260/640261D 527 616 6.4 7.9 0.31 2.2 3.27 2.15 339
489.026 634.873 320.675 320.675 3.3 3.3 4520 13200 EE243193D/243250/243251D 526 595 3.3 3.3 0.34 1.97 2.93 1.93 25
　 634.873 320.675 320.675 3.3 3.3 4930 13700 LM772749DW/LM772710/LM772710D 513 594 3.3 3.3 0.47 1.43 2.12 1.4 254
501.65 673.1 387.35 400.05 3.3 6.4 6670 17300 EE641198D/641265/641266D 535 628 6.4 3.3 0.31 2.15 3.2 2.1 395
　 711.2 520.7 520.7 3.3 6.4 9610 25600 M274149DW/M274110/M274110D 549 656 6.4 3.3 0.33 2.03 3.02 1.98 691
508 762 463.55 463.55 6.4 6.4 9260 19900 EE531201D/531300/531301D 564 696 6.4 6.4 0.38 1.78 2.65 1.74 741
514.35 673.1 422.275 422.275 3.3 6.4 7130 20300 LM274449DW/LM274410/LM274410D 546 631 6.4 3.3 0.33 2.03 3.02 1.98 400
519.112 736.6 536.575 536.575 3.3 6.4 10600 27200 M275349D/M275310/M275310D 563 681 6.4 3.3 0.33 2.03 3.02 1.98 791
520.7 711.2 400.05 400.05 3.2 6.4 7000 17500 LM275349D/LM275310/LM275310D 562 663 6.4 3.2 0.33 2.03 3.02 1.98 438
536.575 761.873 558.8 558.8 3.3 6.4 11300 28800 M276449D/M276410/M276410D 578 700 6.4 3.2 0.33 2.03 3.02 1.98 835

 

 
Dimensions Basic load Designations  Installation dimensions Calculated constant Axial load factors Mass
ratings
mm kN dbmin Damin ramax rbmax e Y1 Y2 Y0 kg
d D T 　 rmin r1min Cr Cor
558.8 736.6 322.268 322.268 3.3 6.4 5920 16100 EE843221DW/843290/843291D 606 693 6.4 3.3 0.34 1.97 2.93 1.93 378
　 736.6 409.575 409.575 3.3 6.4 7180 19700 LM377449DW/LM377410/LM377410D 597 691 6.4 3.3 0.35 1.95 2.9 1.91 482
　 736.6 457.2 457.2 3.3 6.4 8990 25500 LM277149DA/LM277110/LM277110D 590 690 6.4 3.3 0.33 2.03 3.02 1.98 545
571.5 812.8 593.725 593.725 3.3 6.4 13000 35000 M278749DW/M278710/M278710D 625 751 6.4 3.3 0.33 2.03 3.02 1.98 1007
584.2 762 401.638 396.875 3.3 6.4 7330 20800 LM778549DW/LM778510/LM778510D 618 715 6.4 3.2 0.47 1.43 2.12 1.4 468
585.788 771.525 479.425 479.425 3.3 6.4 9140 2560 LM278849D/LM278810/LM278810D 622 725 6.4 3.3 0.33 2.03 3.02 1.98 606
595.312 844.55 615.95 615.95 3.3 6.4 13600 36900 M280049D/M280010/M280010D 650 780 6.4 3.3 0.33 2.03 3.02 1.98 1155
603.25 857.25 622.3 622.3 6.4 3.3 14500 38500 M280249D/M2820210/M280210XD 652 788 6.4 3.3 0.33 2.03 3.02 1.98 1235
609.6 787.4 361.95 361.95 3.3 6.4 6790 19900 EE649241DW/649310/649311D 648 739 6.4 3.3 0.37 1.82 2.7 1.78 467
　 813.562 479.425 479.425 3.3 6.4 9350 27100 LM280249DW/LM280210/LM280210D 656 759 6.4 3.3 0.33 2.03 3.02 1.98 715
　 863.6 660.4 660.4 3.3 6.4 14700 41000 M280349D/M280310/M280310D 648 807 6.4 3.3 0.33 2.03 3.02 1.98 1263
635 901.7 654.05 654.05 3.3 6.4 15500 43500 M281049DW/M281010/M281010D 671 843 6.4 3.3 0.33 2.03 3.02 1.98 1437
646.112 857.25 542.925 542.925 3.3 6.4 11500 34500 LM281049DW/LM281010/LM281010D 678 810 6.4 3.3 0.33 2.03 3.02 1.98 873
649.924 914.3898 674 672 3.6 6 15900 43800 M281349D/M281310/M281310D 702 844 6 3.6 0.33 2.03 3.02 1.98 1437
657.225 933.45 676.275 676.275 3.3 6.4 17300 46000 M281649D/M281610/M281610D 710 870 6.4 3.3 0.33 2.03 3.02 1.98 1546
659.925 854.923 318.48 319.192 4.8 9.7 6240 16000 EE749259DW/749334/749335D 700 800 9.7 4.8 0.35 1.92 2.86 1.88 457
660 855 319.192 318.48 4.8 9.7 6050 17100 EE749259D/749334/749335D 713 799 9.7 4.8 0.35 1.9 2.9 1.8 490
660.4 812.8 365.125 365.125 3.3 6.4 6860 21100 L281149D/L281110/L281110D 691 770 6.4 3.3 0.33 2.03 3.02 1.98 415

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Product introduction
Inch series Four-row tapered roller bearings
Four row tapered roller bearings are also roller diameter bearings widely used. The type of bearing has a large carrying capacity and can carry the combined radial and axial loads mainly consisting of radial load at the same time. Its radial load capacity is about 2.5-3.5 times larger than single row bearing, and it can carry large radial load and axial load. Due to limited structure, its limit speed is relatively lower than that of four row cylindrical roller bearing. Four row tapered roller bearings can carry axial load in two directions, so they can be used as bidirectional thrust bearings.
Four row tapered roller bearings are mainly used for work rolls and support rolls of various plate and strip rolling mills and roughing mills. Adjusting the thickness of the spacer ring and the clearance of the bearing make such bearing more suitable for the working conditions.
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