21 models in the 631 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) | |
|---|---|---|---|---|---|
| 63112RS | KOYO | 120 | 29 | Cross-ref → | |
| 63122RS | KOYO | 130 | 31 | Cross-ref → | |
| 63132RS | KOYO | 140 | 33 | Cross-ref → | |
| 63142RS | KOYO | 150 | 35 | Cross-ref → | |
| 63152RS | KOYO | 160 | 37 | Cross-ref → | |
| 63192RU | KOYO | 200 | 45 | — | |
| 63102RD | KOYO | 50 | 110 | 27 | — |
| 63102RS | KOYO | 50 | 110 | 27 | Cross-ref → |
| 63102RU | KOYO | 50 | 110 | 27 | — |
| 63112RU | KOYO | 55 | 120 | 29 | — |
| 63122RU | KOYO | 60 | 130 | 31 | — |
| 63132RU | KOYO | 65 | 140 | 33 | — |
| 63142RU | KOYO | 70 | 150 | 35 | — |
| 63152RU | KOYO | 75 | 160 | 37 | — |
| 63162RS | KOYO | 80 | 170 | 39 | Cross-ref → |
| 63162RU | KOYO | 80 | 170 | 39 | — |
| 63172RS | KOYO | 85 | 180 | 41 | Cross-ref → |
| 63172RU | KOYO | 85 | 180 | 41 | — |
| 63182RS | KOYO | 90 | 190 | 43 | Cross-ref → |
| 63182RU | KOYO | 90 | 190 | 43 | — |
| 63192RS | KOYO | 95 | 200 | 45 | Cross-ref → |
631 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