24 models in the 399 series, 68.263–101.6 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) | |
|---|---|---|---|---|---|
| 399A - 393 | TIMKEN | — | |||
| 399A - 393A | TIMKEN | — | |||
| 399A - 394 | TIMKEN | — | |||
| 399A - 394A | TIMKEN | Cross-ref → | |||
| 399A - 394AS | TIMKEN | — | |||
| 399A - 394D | TIMKEN | — | |||
| 399AS - 394AB | TIMKEN | — | |||
| 399AS - 394AS | TIMKEN | — | |||
| 399AS - 394DC | TIMKEN | — | |||
| 399A/394A | KOYO | 110 | 21.996 | Cross-ref → | |
| 399AS/394A | KOYO | 110 | 21.996 | Cross-ref → | |
| 399A/3920 | TIMKEN | 68.263 | 112.712 | 26.975 | — |
| 399AS/3920 | TIMKEN | 68.263 | 112.712 | 26.975 | — |
| 399A/394A | NACHI | 68.263 | 110 | 21.996 | Cross-ref → |
| 399AS/394A | NACHI | 68.263 | 110 | 21.996 | Cross-ref → |
| 39921 | SKF | 101.6 | — | ||
| 39922 | SKF | 101.6 | — | ||
| 39923 | SKF | 101.6 | — | ||
| 39930 | SKF | 101.6 | Cross-ref → | ||
| 39932 | SKF | 101.6 | — | ||
| 39933 | SKF | 101.6 | — | ||
| 39961 | SKF | 101.6 | — | ||
| 39975 | SKF | 101.6 | — | ||
| 39997 | SKF | 101.6 | — |
399 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