24 models in the 621 series, 50–95 mm bore. Every row links to the full specification page and to the cross-reference page of that model.
| Model | Brand | Bore d (mm) | OD D (mm) | Width B (mm) | |
|---|---|---|---|---|---|
| 62102RU | KOYO | 90 | 20 | — | |
| 62122RS | KOYO | 110 | 22 | Cross-ref → | |
| 62132RS | KOYO | 120 | 23 | Cross-ref → | |
| 62142RS | KOYO | 125 | 24 | Cross-ref → | |
| 62152RS | KOYO | 130 | 25 | Cross-ref → | |
| 62162RS | KOYO | 140 | 26 | Cross-ref → | |
| 62102RD | KOYO | 50 | 90 | 20 | — |
| 62102RS | KOYO | 50 | 90 | 20 | Cross-ref → |
| 621/612 | KOYO | 53.975 | 120.65 | 41.275 | Cross-ref → |
| 62112RD | KOYO | 55 | 100 | 21 | — |
| 62112RS | KOYO | 55 | 100 | 21 | Cross-ref → |
| 62112RU | KOYO | 55 | 100 | 21 | — |
| 62122RD | KOYO | 60 | 110 | 22 | — |
| 62122RU | KOYO | 60 | 110 | 22 | — |
| 62132RU | KOYO | 65 | 120 | 23 | — |
| 62142RU | KOYO | 70 | 125 | 24 | — |
| 62152RU | KOYO | 75 | 130 | 25 | — |
| 62162RU | KOYO | 80 | 140 | 26 | — |
| 62172RS | KOYO | 85 | 150 | 28 | Cross-ref → |
| 62172RU | KOYO | 85 | 150 | 28 | — |
| 62182RS | KOYO | 90 | 160 | 30 | Cross-ref → |
| 62182RU | KOYO | 90 | 160 | 30 | — |
| 62192RS | KOYO | 95 | 170 | 32 | Cross-ref → |
| 62192RU | KOYO | 95 | 170 | 32 | — |
621 series bearings follow the ISO dimension plan for this family, so a given number is dimensionally interchangeable between brands - see the cross-reference to confirm. Choose the suffix for your duty: shields for dry, clean positions, contact seals for wet or dusty ones, and a larger clearance class where the fit or temperature demands it.
Other Custom & Special Bearings series: 62 · 685 · 63 · 60 · SNV · K · BND · 697