Four-point contact ball bearingsFour-point contact ball bearingsFour-point contact ball bearings
Four-point contact ball bearingsFour-point contact ball bearingsFour-point contact ball bearings

Four-point contact ball bearings

Four point contact ball bearings are separable bearings, generally including two structures: type QJ 0000 -- two-piece inner ring and an integral outer ring; type QJF 0000 -- two-piece outer ring and an integral inner ring. This kind of bearing can carry axial load in two directions and eccentric load, namely moment load. It has the characteristics and performance of single row and double row angular contact ball bearings.

Specifications

Four-point contact ball bearings

 

Dimensions

Basic load

ratings

Designation

Mass

Limiting

speeds

mm

kN

Current

Original

kg

r/min

d

D

B

rmin

Cr

Cor

Grease

Oil

150

225

35

2.1

225

275

QJ1030

176130

5.1

1900

2800

 

225

35

2.1

225

275

QJF1030

116130

5.1

1900

2800

 

270

45

3

302

372

QJ230

176230

12.5

1700

2400

 

270

45

3

302

372

QJF230

116230

12.5

1700

2400

 

320

65

4

494

710

QJ330

176330

29

1600

2200

 

320

65

4

494

710

QJF330

116330

29

1600

2200

160

240

38

2.1

260

318

QJ1032

176132

6.3

1800

2600

 

240

38

2.1

260

318

QJF1032

116132

6.3

1800

2600

 

290

48

3

352

455

QJ232

176232

14.6

1600

2200

 

290

48

3

352

455

QJF232

116232

14.6

1600

2200

 

340

68

4

585

865

QJ332

176332

31

1500

2000

 

340

68

4

585

865

QJF332

116332

31

1500

2000

170

260

42

2.1

226

350

QJ1034

176134

8.5

1700

2400

 

260

42

2.1

226

350

QJF1034

116134

8.5

1700

2400

 

265

42

2.1

226

350

QJF1034X1

176734X1

9

1300

1600

 

310

52

4

358

480

QJ234

176234

19.5

1600

2200

 

310

52

4

358

480

QJF234

116234

19.5

1600

2200

 

360

72

4

618

965

QJ334

176334

41.5

1400

1900

 

360

72

4

618

965

QJF334

116334

41.5

1400

1900

180

280

46

2.1

335

408

QJ1036

176136

11

1600

2200

 

280

46

2.1

335

408

QJF1036

116136

11

1600

2200

 

320

52

4

392

545

QJ236

176236

20.5

1500

2000

 

320

52

4

392

545

QJF236

116236

20.5

1500

2000

190

290

46

2.1

348

430

QJ1038

176138

11.5

1600

2200

 
Dimensions Basic load Designation Mass Limiting
ratings speeds
mm kN Current Original kg r/min
d D B rmin Cr Cor Grease Oil
190 290 46 2.1 348 430 QJF1038 116138 11.5 1600 2200
  340 55 4 455 735 QJ238 176238 39 1400 2200
  340 55 4 455 735 QJF238 116238 39 1400 2200
200 310 51 2.1 380 498 QJ1040 176140 14.9 1500 2000
  310 51 2.1 380 498 QJF1040 116140 14.9 1500 2000
  360 58 4 507 850 QJ240 176240 27 1300 1800
  360 58 4 507 850 QJF240 116240 27 1300 1800
  360 70 4 520 865 QJF1240 - 32.5 1300 1800
220 340 56 3 448 622 QJ1044 176144 19.6 1300 1800
  340 56 3 448 622 QJF1044 116144 19.6 1300 1800
240 360 56 3 458 655 QJ1048 176148 21 1200 1700
  360 56 3 458 655 QJF1048 116148 21 1200 1700
260 400 65 4 510 765 QJ1052 176152 31.3 1000 1500
  400 65 4 510 765 QJF1052 116152 31.3 1000 1500
280 420 65 4 540 835 QJ1056 176156 33.2 950 1400
  420 65 4 540 835 QJF1056 116156 33.2 950 1400
300 460 74 4 630 1040 QJF1060 116160 47 900 1300
320 480 74 4 650 1090 QJ1064 176164 49.5 850 1200
  480 74 4 650 1090 QJF1064 116164 49.5 850 1200
340 520 82 5 725 1270 QJ1068 176168 67.5 800 1100
  520 82 5 725 1270 QJF1068 116168 67.5 800 1100
360 540 82 5 768 1380 QJ1072 176172 69.2 800 1100
  540 82 5 768 1380 QJF1072 116172 69.2 800 1100
  650 122 6 999 2340 QJ 1272 1176272 190 700 950

 

 
Dimensions Basic load Designation Mass Limiting
ratings speeds
mm kN Current Original kg r/min
d D B rmin Cr Cor       Grease Oil
380 560 82 5 737 1710 QJ 1076 176176 73.5 750 1000
  680 132 6 1053 2565 QJ 1276 1176276 220 670 900
400 600 90 5 814 1944 QJ 1080 176180 95.5 700 950
  720 140 6 1170 2925 QJ 1280 1176280 265 600 800
420 560 65 4 573 1440 QJ 1984 1176984 51 700 950
  620 90 5 831 2052 QJ 1084 176184 99.5 670 900
  760 150 7.5 1287 3375 QJ 1284 1176284 315 560 750
440 600 74 4 685 1710 QJ 1988 1176988 65 670 900
  650 94 6 896 2250 QJ 1088 176188 115 630 850
  790 155 7.5 1260 3375 QJ 1288 1176288 350 560 750
460 680 100 6 936 2385 QJ 1092 176192 130 600 800
  830 165 7.5 1377 3825 QJ 1292 1176292 415 530 700
480 700 100 6 954 2520 QJ 1096 176196 135 560 750
  870 170 7.5 1512 4275 QJ 1296 1176296 470 500 670

 

 

Product introduction

Four point contact ball bearings are separable bearings, generally including two structures: type QJ 0000 -- two-piece inner ring and an integral outer ring; type QJF 0000 -- two-piece outer ring and an integral inner ring. The contact angle is usually 35°. Under the pure radial load, the steel ball and the raceway are in four-point contact. Under the unidirectional axial load, the steel ball and the raceway are in two-point contact. This kind of bearing can carry axial load in two directions and eccentric load, namely moment load. It has the characteristics and performance of single row and double row angular contact ball bearings. If used under high speed operation, two-point contact must be ensured to ensure its normal operation.

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