8 models in the 251 series, 33.337–63.98 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) | |
|---|---|---|---|---|---|
| 251511 | TIMKEN | — | |||
| 25171 | SKF | — | |||
| 25132/25289D | TIMKEN | 33.337 | 73.025 | 42.862 | — |
| 25100 | SKF | 63.5 | — | ||
| 25102 | SKF | 63.5 | — | ||
| 25108 | SKF | 63.5 | — | ||
| 25110 | SKF | 63.5 | — | ||
| 25190 | SKF | 63.98 | — |
251 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