28 models in the 231 series, 25.4–460 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) | |
|---|---|---|---|---|---|
| 23100 | TIMKEN | — | |||
| 23100 - 23250X | TIMKEN | — | |||
| 23100 - 23256 | TIMKEN | Cross-ref → | |||
| 23100 - 23256-B | TIMKEN | — | |||
| 23101X | TIMKEN | — | |||
| 23101X - 23250X | TIMKEN | — | |||
| 23101X - 23256 | TIMKEN | — | |||
| 231975 | TIMKEN | — | |||
| 231976CD | TIMKEN | — | |||
| 23100/23250X | ANDGE | 25.4 | 63.5 | 21.692 | — |
| 23100/23256-B | TIMKEN | 25.4 | 65.024 | 10.32 | — |
| 23100/23256 | TIMKEN | 25.4 | 65.088 | 22.225 | Cross-ref → |
| 23100/23256 | ANDGE | 25.4 | 65.088 | 22.225 | Cross-ref → |
| 23100/23256B | ANDGE | 25.4 | 65.088 | 10.32 | — |
| 23100/256 | ANDGE | 25.4 | 65.088 | 22.225 | — |
| 23124AXK | NACHI | 120 | 200 | 62 | — |
| 23126AXK | NACHI | 130 | 210 | 64 | — |
| 23126EX1K | NACHI | 130 | 210 | 64 | — |
| 23134AXK | NACHI | 170 | 280 | 88 | — |
| 23134EX1K | NACHI | 170 | 280 | 88 | — |
| 23136A2XK | NACHI | 180 | 300 | 96 | — |
| 23136EK | NACHI | 180 | 300 | 96 | — |
| 23140EK | NACHI | 200 | 340 | 112 | — |
| 23148A2XK | NACHI | 240 | 400 | 128 | — |
| 23152EK | NACHI | 260 | 440 | 144 | — |
| 23156EK | NACHI | 280 | 460 | 146 | — |
| 23172EK | NACHI | 360 | 600 | 192 | — |
| 23192EK | NACHI | 460 | 760 | 240 | — |
231 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