9 models in the 121 series, 42.862–44.45 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) | |
|---|---|---|---|---|---|
| 121265 | TIMKEN | — | |||
| 12168 | TIMKEN | — | |||
| 12168 - 12303 | TIMKEN | — | |||
| 12175 | TIMKEN | — | |||
| 12175 - 12303 | TIMKEN | — | |||
| 12175 - 12303-B | TIMKEN | — | |||
| 12168/12303 | ANDGE | 42.862 | 76.992 | — | |
| 12175/12303-B | TIMKEN | 44.45 | 76.962 | 17.145 | — |
| 12175/12303 | ANDGE | 44.45 | 76.992 | — |
121 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 Tapered Roller Bearings series: EE · HM · LM · M · 320 · BT · 322 · L