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.
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 |
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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