Luoyang Tedin Bearing Co.,Limited
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TEDIN Bearing Co., Ltd.

Tel.:     0086-379 67301199

M.P:    0086-136 63889399

Whatsapp:  8613663889399

Skype:  lysnzc
E-mail: sales@tedin-bearing.com;

Web: www.tedin-bearing.com;

Four Row Tapered Roller BearingsFour row tapered roller bearings mainly used for work rolls or intermediate rolls, carry both of radial load and axial load at a time.
Adjustment of internal clearance is not required.
facilitating habdling, open type is also available.

Four-row Tapered Roller Bearing

Four row tapered roller bearings are composed of two double inner rings, one double row outer ring and two single outer rings. There is an inner spacer ring between the two inner rings and two middle spacer rings between the three outer rings to adjust the clearance. The bearing bears radial load and simultaneously bearing axial load in both directions, but the allowable rotational speed of the bearing is not high, so long as the roll bearing of the steel mill is brave enough. In recent years, the bearing began to produce double-sided seal ring structure, and gradually widely used.

The medium and small dimensions four row tapered roller bearings are made of bearing steel, the large four row tapered roller bearings are made of carburized steel, and the special dimensions are made of hollow rollers and prop cages to increase the service life of the bearings.

1.Cage material:

Four-row tapered roller bearings generally use steel plate stamping cage, especially large size of the support welding cage. 

2.Tolerance and clearance:

Four row tapered roller bearings are generally P0 tolerance, but they can also produce higher precision bearings according to the needs of customers (P5, P4). 

The clearance of the four-row tapered roller bearing has been adjusted according to the installation regulation and the bearing production agreement (no production agreement according to the standard group clearance). After a certain period of use, the user should readjust the clearance. 


图片11.jpg

Model

Old Model

Boundary dimensions (mm)

Basic load ratings (KN)Weight (KG)

d

D

T

B

Rsmin

rsmin

dyc_Crstc_Cor

7740

77740

200

310

200

200

3

2.5

1970

4250

55.6

-

2077140

200

310

275

275

3

2.5

1230

4200

75.1

77741

77741

205

320

205

205

4

3

1060

2850

55.4

2077144E

2077144E

220

340

305

305

4

3

2457

5974

100.8

2077148

2077148

240

360

310

310

4

3

3300

7210

90.5

330782A

-

241.478

349.148

228.6

228.6

1.5

3.3

1732

4387

70.4

380650

3-703

250

385

255

255

3

3

2127

4948

107.8

77750Y

77750Y

250

460

270

270

4

4

3040

5726

196

382952

2077952

260

360

265

265

3

3

1990

5770

80

381052X2/HC

77752

260

400

255

255

5

5

2109

4957

123

382052

-

260

400

345

345

5

4

2850

7700

161

77752

77752

260

440

300

300

2

5

2715

5968

164

330822B

-

266.7

355.6

228.6

230.188

1.5

3.3

1780

5340

62.8

-

77756

280

420

250

250

5

5

1540

5300

119

381156

1077756

280

460

324

324

5

4

3780

8560

215.7

-

2077160

300

460

390

390

5

4

3850

10200

222

-

2077164

320

480

380

380

5

4

3000

11500

252

-

2077968

340

460

310

310

4

4

2200

9300

147

381068

-

340

520

325

325

5

4

3200

8200

247

-

77872

360

480

375

375

4

4

2550

1800

197

107772

1077772

360

600

420

420

4.7

4.7

3950

13500

388

-

77776

380

550

350

30

5

5

3800

10000

271

-

3077776

380

620

388

388

6

6

3450

11600

443

381176

1077776

380

620

420

420

5

4

5050

12600

485

-

77779

395

545

288.7

268.7

10

10

2361

6558

191

-

77880

400

540

280

280

3.7

7.5

2450

6500

187

380680

-

400

540

400

400

5

5

6350

13300

262

381080

-

400

600

356

356

5

4

3400

12400

345

380684

-

420

560

437

437

5

5

7180

16300

298

381184

1077784

420

700

480

480

6

5

9550

18200

755

-

77888

440

620

454

454

6

6

6050

18800

432

-

77788

440

650

355

355

6

6

5040

12390

385

381992

1077992

460

620

310

310

4

3

4150

11651

252

-

77892

460

650

474

474

6

6

4500

12000

506

381192

-

460

730

440

440

4

7.5

5600

148100

663

-

77196

480

700

420

420

6

5

5350

15500

535

380698

-

490

625

385

385

7

4

4900

16500

278

3810/530

-

530

780

450

450

6

5

6550

18200

745

-

779/540

540

690

400

400

5

5

5700

11400

375

3819/560

-

560

750

368

368

5

4

7850

15800

447

3811/560

-

560

920

620

620

7.5

6

18200

32000

1690

-

779/600

600

800

365

365

5

5

4000

18100

489

-

10777/600

600

800

380

800

5

4

4000

18100

497

3810/600

-

600

870

480

480

6

6

6150

25500

992

-

10777/600

600

980

650

650

7.5

7.5

9650

37500

1970

3819/630

-

630

850

418

418

6

6

5000

22100

682

-

771/630

630

920

515

515

7.5

7.5

6550

27500

1190

3811/630

-

630

1030

670

670

7.5

6

15000

42000

2200

-

777/640

640

1030

560

560

7.5

12

16000

39300

1770

-

777/650

650

1030

560

560

7.5

12

14620

35515

1720

-

10779/670

670

900

412

412

6

6

5250

24600

773

-

779/710

710

900

410

410

3

6

5350

27500

650

-

10777/750

750

1220

840

840

9.5

9.5

16100

68500

3985


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