Four point contact ball bearings are single row having raceways that enable to accommodate axial loads in both directions. They need lesser axial space and a two part inner ring. This allows large number of balls to be incorporated and carry larger loads. The bearings are separable type. They are designed to accommodate axial loads and arranged as thrust bearings with radial clearance.

Four point contact ball bearings is separable bearing, owning two-piece inner ring or outer ring. its contact angle is 35 °。 There are four points contact between steel ball and rings. Four point contact ball bearings can endure radial load, axial load and the combined load (axial load and radial load). This type of bearing can limit the displacement of two radial directions between the shaft and housing. We classify it by its structure .they are QJ and QJF this two kinds. Four point contact ball bearings enjoy big load capability and high rotate speed. They can support the bidirectional load. They own the both character which single row enjoyed and double row enjoyed. Four points contact ball bearing is suitable to mill machines, spindle shaft for machine tools. And printing machines etc.

Principal Dimensions

Basic Load Ratings

Limiting Speeds

Wt

Bearing Number

d

D

B

Cr

Cor

Grease

Oil

mm

KN

r/min

kg

New

Old

150

225

35

195

275

2000

2600

5.3

QJ1030

176130

270

45

305

420

1500

2000

12.5

QJ230

176230

320

65

445

640

1400

1900

29

QJ330

176330

160

239.5

38

225

320

1800

2400

6.3

QJ1032X1

176732

240

38

225

320

1800

2400

6.5

QJ1032

176132

290

48

355

515

1400

1900

15.5

QJ232

176232

340

68

490

735

1400

1800

34.5

QJ332

176332

170

259.5

42

260

365

1700

2200

8.5

QJ1034X1

176734

260

42

260

365

1700

2200

8.6

QJ1034

176134

310

52

360

540

1400

1900

19.5

QJ234

176234

360

72

560

870

1200

1600

41.5

QJ334

176334

180

279.5

52

305

460

1500

2000

10.8

QJ1036X1

176736

280

46

305

460

1500

2000

11

QJ1036

176136

320

52

395

615

1400

1800

20.5

QJ236

176236

380

75

575

920

1200

1600

47.5

QJ336

176336

190

289.5

46

305

460

1500

2000

11

QJ1038X1

176738

290

46

305

460

1500

2000

11.5

QJ1038

176138

340

55

440

705

1200

1600

24.5

QJ238

176238

200

280

51

220

340

1500

2000

10.5

QJ1940

176940

289.5

58

235

385

1400

1900

13.5

QJ1040X1

176740

310

51

355

560

1400

1900

15

QJ1040

176140

360

58

460

765

1200

1600

28.5

QJ240

176240

360

70

470

780

1200

1600

32.5

QJ1240

-

220

300

60

225

365

1400

1900

13

QJ1944

176944

309.5

60

250

415

1400

1800

15

QJ1044X1

176744

340

56

400

675

1400

1800

19.5

QJ1044

176144

400

65

500

885

1100

1400

39.5

QJ244

176244

400

78

535

920

1100

1400

45.5

QJ1244

-

460

88

705

1260

1000

1300

78

QJ344

176344

240

329.5

60

260

455

1200

1600

16

QJ1048X1

176748

360

56

405

705

1200

1600

21

QJ1048

176148

440

72

585

1080

1000

1300

53

QJ248

176248

440

85

600

1100

1000

1300

61

QJ1248

-

Principal Dimensions

Basic Load Ratings

Limiting Speeds

Wt

Bearing Number

d

D

B

Cr

Cor

Grease

Oil

mm

KN

r/min

kg

New

Old

260

369.5

60

315

585

I100

1400

22

QJ1052X1

176752

360

46

355

640

1100

1500

15

QJ1952

-

400

65

490

900

1100

1400

31.5

QJ1052

176152

480

80

669

1290

850

1100

68

QJ252

176252

480

90

670

1315

850

1100

78

QJ1252

-

280

375

65

295

540

1100

1400

QJ1956

176956

420

65

500

955

1100

1400

33.5

QJ1056

176156

500

90

660

1315

850

1100

82

QJ1256

-

300

460

74

585

1210

900

1200

47.5

QJ1060

176160

540

98

745

1585

750

1000

105

QJ1260

-

320

480

74

600

1260

850

1100

50

QJ1064

176164

580

105

835

l840

700

950

130

QJ1264

-

340

520

82

705

1530

750

1000

67.5

QJ1068

176168

620

118

955

2200

670

900

165

QJ1268

-

360

540

82

715

1620

750

1000

70.5

QJ1072

176172

650

122

1000

2340

560

750

190

QJ1272

-

380

560

82

740

1700

700

950

73.5

QJ1076

176176

680

132

1055

2560

530

700

220

QJ1276

-

400

600

90

815

1900

670

900

95.5

QJ1080

176180

720

140

1170

2900

480

630

265

QJ1280

-

420

560

65

575

1440

670

900

51

QJ1984

176984

620

90

835

2050

670

900

99.5

QJ1084

176184

760

150

1290

3370

-

-

315

QJ1284

-

440

600

74

685

1700

670

900

65

QJ1988

116988

650

94

900

2250

600

800

115

QJ1088

116188

790

155

1260

3370

-

-

350

QJ1288

-

460

680

100

940

2385

600

800

130

QJ1092

176192

830

165

1380

3820

-

-

415

QJ1292

-

480

700

100

955

2500

530

700

135

QJ1096

176196

870

170

1515

4270

-

-

470

QJ1296

-

500

720

100

1000

2550

530

700

140

QJ10/500

1761/500

We can make a design of your required four point contact ball bearings, one row or two row. Welcome to contact us in details.