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  Products

Four row tapered roller bearings (380000 type)
 
four row tapered roller bearing
 

Four row tapered roller bearing inner ring with the neck roll and generally with the gap, when the first installation of bearing load bearing box, and then put into boxes bearing journal.

Four row tapered roller bearings and bearing outer ring also used moving boxes with holes, the first load bearing outer ring A box (see Figure 2). Factory in the outer ring, as well as inside and outside the inner circle are printed every other character symbols, characters must be installed when the symbols are arranged in order of load bearing box. Can not be any swaps in order to prevent the bearing clearance to change.
Bearing all the parts are put into boxes, and within the inner circle separated, and the outer ring outside the ring every axial.
Measurement end with the outer ring bearing cover the width of the gap between the board to determine the appropriate thickness of the gasket.

four row tapered roller bearings

The performance of this type of bearing is almost identical with double-row Tapered Roller Bearing, but the bearing can be subject to larger radial load than double-row Tapered Roller Bearing. Its limit speed is a little lower, and it is mainly applied on heavy-duty machine such as rolling mill etc.


Four Row Tapered roller bearings

Bearings No.

Dimensions (mm)

Basic Load Ratings(KN)

Limiting Speed(min)

Weight (KG)

New Code

Old Code

d

D

C1

T

Rmin

R1min

Cr(N)

Cor(N)

Lubrication

Grease

Oil

380641

77741

205

320

205

205

4

4

980

1500

580

700

54.8

382044

2077144

220

340

305

305

4

3

2070

5430

500

630

105

382048

2077148

240

360

310

310

4

3

2110

5610

450

560

115

382052

2077152

260

400

345

345

5

4

2710

7140

430

530

153

381052X2

77752

260

400

255

255

5

4

2790

5800

430

530

123

382952

2077952

260

360

265

265

3

2.5

1760

4720

450

560

81

382952X1

 

260

370

265

265

3

2.5

2000

5960

450

530

96

382956

2077956

280

380

265

265

3

2.5

2000

2330

430

530

91

382056

2077156

280

420

345

345

5

4

2150

4530

380

480

191

381156

1077756

280

460

324

324

5

4

2840

7290

360

450

200

382960

2077960

300

420

300

300

4

3

2330

7120

380

480

130

382060

2077160

300

460

390

390

5

4

3180

9330

360

450

219

381160

1077760

300

500

370

370

5

4

3390

8710

340

430

285

382964

2077964

320

440

300

300

4

3

2730

7020

360

450

140

380664

77864

320

460

380

380

6

5

3100

8100

340

430

210

382064X2

20771634

320

480

380

380

5

4

3180

9330

340

430

252

381164

1077764

320

540

406

406

5

4

5500

14800

300

380

400

382968

2077968

340

460

310

310

4

3

2480

8100

340

430

145

381068

77168

340

520

325

325

5

4

3100

8620

320

400

234

381168

1077768

340

580

425

425

5

4

4580

11700

280

360

441

382972

2077972

360

480

310

310

4

3

2977

8030

300

380

164

381072

77172

360

540

325

325

5

4

3360

8840

300

380

248

381172

1077772

360

600

420

420

5

4

6360

17200

280

380

502

381076

77176

380

560

325

325

5

4

3360

8840

280

380

281

381176

1077776

380

620

420

420

5

4

4700

12300

240

360

510

380680

77880

400

540

280

280

5

4

1950

4030

320

410

189

381080

77180

400

600

356

356

5

4

4160

10400

240

320

317

381180

1077780

400

650

456

456

6

5

4510

11400

200

280

532


Inch four row tapered roller bearings are different from the metric bearings in structure, mounting dimension and rotate speed precision. 

Inch four row Tapered roller bearings are generally of separable design and have tapered cone and cup raceway between which tapered roller are arranged, their design makes Inch four-row tapered roller bearings particularly suitable for carrying combined (radial and axial ) load.

Bearing Designations

Principal Dimensions

Designations

d

D

T

mm

inch

mm

inch

mm

inch

M238849D/ M238810-M238810D

187.325

7.375

269.875

10.625

211.138

8.3125197

M249748D/ M249710/ M249710D

254

10

358.775

14.125

269.875

10.625

M249748DW/M249710/M249710D

254

10

358.775

14.125

269.875

10.625

M252349DW/ M252310D

269.875

10.625

381

15

282.575

11.125

M255449DW/ M255410/M255410D

288.925

11.375

406.4

16

298.45

11.75

M257248DW/ M257210/ M257210D

304.902

12.004

412.648

16.246

266.7

10.5

LM761648DW/ LM761610/ LM761610D

341.312

13.4375

457.098

17.996

254

10

LM761649DW/ LM761610/ LM761610D

343.052

13.506

457.098

17.996

254

10

HM266449DW/ HM266410- HM266410CD

384.175

15.125

546.1

21.5

400.05

15.75

M268749D/ M268710/ M268710D

415.925

16.375

590.55

23.25

434.975

17.125

LM769349D/ LM769310/ LM769310D

431.8

17

571.5

22.5

336.55

13.25

M270449DA/ M270410/ M270410D

450

17.716

595

23.425

368

14.488

L770847DGW/ L770810/ L770810D

457.2

18

596.9

23.5

279.4

11

M271149DW/ M271110/ M271110D

460

18.11

625

24.606

421

16.575

LM272249DW/ LM272210/ LM272210D

482.6

19

615.95

24.25

330.2

13

LM272249DWA/ LM272210/ LM272210D

482.6

19

615.95

24.25

330.2

13

M272647DGW/ M272610/ M272610D

482.6

19

647.7

25.5

417.512

16.437

M274149DW/ M274110/ M274110D

501.65

19.75

711.2

28

520.7

20.5

LM274049DW/ LM274010/ LM274010D

508

20

695.325

27.375

415.925

16.375

M278749DW/ M278710/ M278710D

571.5

22.5

812.8

32

593.725

23.375


Bearing Designations

(kN) Basic load rating

Other dimensions

(kg) Weight

Designations

(Cr) Dynamic

(Cor) Static

B

r min

r1min

mm

inch

axial

radial

axial

radial

M238849D/ M238810-M238810D

1250

3430

211.138

8.3125

1.5

1.5

3.3

3.3

41.5

M249748D/ M249710/ M249710D

2080

6050

269.875

10.625

3.3

3.3

3.3

3.3

88.9

M249748DW/M249710/M249710D

2080

6050

269.875

10.625

3.3

3.3

3.3

3.3

88.9

M252349DW/ M252310D

2340

7550

282.575

11.125

3.3

3.3

3.3

3.3

105

M255449DW/ M255410/M255410D

2640

8150

298.45

11.75

3.3

3.3

3.3

3.3

125

M257248DW/ M257210/ M257210D

2600

7000

266.7

10.5

3.3

3.3

3.3

3.3

102

LM761648DW/ LM761610/ LM761610D

2350

7400

254

10

2

1.5

3.3

3.3

112

LM761649DW/ LM761610/ LM761610D

2350

7350

254

10

2

1.5

3.3

3.3

110

HM266449DW/ HM266410- HM266410CD

5000

16400

400.05

15.75

3.3

3.3

6.4

6.4

310

M268749D/ M268710/ M268710D

 

 

434.975

17.125

3.3

3.3

6.4

6.4

369

LM769349D/ LM769310/ LM769310D

3410

11500

336.55

13.25

1.5

1.5

6.4

6.4

310

M270449DA/ M270410/ M270410D

4000

12250

368

14.488

3

3

6

6

285

L770847DGW/ L770810/ L770810D

4080

11800

276.225

10.875

1.5

1.5

3.3

3.3

200

M271149DW/ M271110/ M271110D

4100

12000

421

16.575

3

3

9

9

382

LM272249DW/ LM272210/ LM272210D

4100

15200

330.2

13

6.4

6.4

6.4

6.4

252

LM272249DWA/ LM272210/ LM272210D

4400

12750

419.1

16.5

3.5

3.5

6.4

6.4

265

M272647DGW/ M272610/ M272610D

5500

15000

417.512

16.437

3.3

3.3

6.4

6.4

400

M274149DW/ M274110/ M274110D

7650

26900

520.7

20.5

3.3

3.3

6.4

6.4

687

LM274049DW/ LM274010/ LM274010D

5800

19600

415.925

16.375

3.3

3.3

6.4

6.4

464

M278749DW/ M278710/ M278710D

10200

35000

593.7

23.374

3.3

3.3

6.4

6.4

1015


If there is any question on design of muti row tapered roller bearings or special tapered roller bearings. Welcome to contact us in details.


auto bearing & ball bearing

Tapered Roller Bearings
Single row tapered roller bearings
Tapered roller bearings with large contact angle
Tapered roller bearing with flanged outer rings
Double tapered roller bearings
Inch series single row tapered roller bearings
Four row tapered roller bearings (380000 type)

Other related category: Auto Bearings,   Power Transmission Parts,   Auto Steering Gears
Relative Product : Deep Groove Ball Bearings , Angular Contact Ball Bearing , Cylindrical Roller Bearings , Self-Aligning Ball Bearing , Spherical Roller Bearings , Tapered Roller Bearings , Bearing Units , Thrust Bearings , Needle Roller Bearings , Linear Bearings , Special Non Standard Bearings

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