14 models in the 343 series, 76.2–87.33 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) | |
|---|---|---|---|---|---|
| 34300 - 34472X | TIMKEN | — | |||
| 34300A - 34472X | TIMKEN | — | |||
| 34300A - 34478 | TIMKEN | — | |||
| 34300A - 34492 | TIMKEN | — | |||
| 34300A - 34492A | TIMKEN | — | |||
| 34300A - 34500 | TIMKEN | — | |||
| 34306 - 34472X | TIMKEN | — | |||
| 34306 - 34492A | TIMKEN | — | |||
| 34306/478 | KOYO | 121.442 | 23.012 | — | |
| 34301/478 | KOYO | 76.2 | 121.442 | 23.012 | — |
| 34307/478 | KOYO | 77.788 | 121.442 | 23.012 | — |
| 34336 | SKF | 87.33 | — | ||
| 34379 | SKF | 87.33 | — | ||
| 34383 | SKF | 87.33 | — |
343 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