14 models in the 681 series, 1–92.075 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) | |
|---|---|---|---|---|---|
| 681 - 672-B | TIMKEN | — | |||
| 681 | NSK | 1 | 3 | 1 | Cross-ref → |
| 681 | NTN | 1 | 3 | 1 | Cross-ref → |
| 681 | ANDGE | 1 | 3 | 1 | Cross-ref → |
| 681-Z | ANDGE | 1 | 3 | 1.5 | — |
| 681-ZC3 | ANDGE | 1 | 3 | 1.5 | — |
| 681-ZZ | ANDGE | 1 | 3 | 1.5 | — |
| 681-ZZC3 | ANDGE | 1 | 3 | 1.5 | — |
| 681-ZZC3P6QE6 | ANDGE | 1 | 3 | 1.5 | — |
| 681C3 | ANDGE | 1 | 3 | 1 | — |
| 681X | NSK | 1.5 | 4 | 1.2 | — |
| 681XZZ | NSK | 1.5 | 4 | 2 | — |
| 68185-2ZTN | ANDGE | 75 | 95 | 10 | — |
| 681A/672D | TIMKEN | 92.075 | 168.275 | 92.075 | — |
681 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 Deep Groove Ball Bearings series: 62 · 60 · 63 · 618 · 619 · 69 · 68 · 160