KOYO angular contact ball bearings
| d | Boundary dimensions
(mm) |
r1 min. |
Basic load ratings (kN)
Single row Matched pair Cr C0r Cr C0r |
Fatigue load limit (kN) Cu
(Single row) (Matched pair) |
Single row |
Bearing
Back-to-back DB |
No.
Face-to-face DF |
(Refer.)
Mass Single row (kg) |
|||||||
| D B C | r
min. |
||||||||||||||
| 310 | 429.5 | 60 | — | 4 | 1.5 | 352 | 435 | 572 | 870 | 11.7 | 23.4 | AC624360B | AC624360BDB | AC624360BDF | 24.5 |
| 320 | 449.5 | 56 | — | 3 | 1.1 | 398 | 513 | 646 | 1 030 | 13.5 | 27.0 | AC644556B | AC644556BDB | AC644556BDF | 27.4 |
| 340 | 479.5 | 65 | — | 3 | 1.1 | 442 | 595 | 718 | 1 190 | 15.2 | 30.4 | AC6848B | AC6848BDB | AC6848BDF | 35.7 |
| 350 | 559.5 | 86 | — | 4 | 1.5 | 659 | 952 | 1 070 | 1 900 | 23.1 | 46.1 | AC7056B | AC7056BDB | AC7056BDF | 81.6 |
| 360 | 509.5 539.5 | 70
82 |
—
— |
5
4 |
2
1.5 |
475
577 |
656
824 |
771
937 |
1 310
1 650 |
16.2
20.1 |
32.5
40.1 |
AC7251B
AC725482B |
AC7251BDB
AC725482BDB |
AC7251BDF
AC725482BDF |
42.9
63.5 |
| 380 | 480
519.5 540 |
46
65 82 |
—
— — |
2.1
4 4 |
1.1
1.5 1.1 |
316
424 520 |
416
590 747 |
513
689 845 |
833
1 180 1 490 |
10.4
14.4 18.0 |
20.7
28.7 36.0 |
7876B
AC7652AB AC7654B |
7876BDB
AC7652ABDB AC7654BDB |
7876BDF
AC7652ABDF AC7654BDF |
18.8
39.2 58.3 |
| 400 | 559.5 | 70 | — | 4 | 1.5 | 503 | 734 | 817 | 1 470 | 17.3 | 34.6 | AC8056B | AC8056BDB | AC8056BDF | 52.1 |
| 420 | 559.5 | 65 | — | 4 | 1.5 | 469 | 683 | 762 | 1 370 | 15.9 | 31.9 | AC8456B | AC8456BDB | AC8456BDF | 55.9 |
| 500 | 620 | 56 | — | 3 | 1.1 | 475 | 740 | 771 | 1 480 | 16.2 | 32.3 | 78/500 | 78/500DB | 78/500DF | 35.5 |
| 530 | 780 | 112 | — | 6 | 3 | 1 010 | 1 810 | 1 640 | 3 620 | 36.6 | 73.1 | 70/530 | 70/530DB | 70/530DF | 174 |
| 560 | 750 | 85 | — | 5 | 2 | 676 | 1 170 | 1 100 | 2 330 | 23.5 | 47.1 | 79/560B | 79/560BDB | 79/560BDF | 102 |
| 670 | 900 103 | — | 6 | 3 | 879 | 1 680 | 1 430 | 3 370 | 31.1 | 62.1 | 79/670B | 79/670BDB | 79/670BDF | 178 | |
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