8 models in the 121 series, 105–105 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) | |
|---|---|---|---|---|---|
| 121-KR | ANDGE | 105 | 160 | 26 | — |
| 121-KRDB | ANDGE | 105 | 160 | 52 | — |
| 121-KRDF | ANDGE | 105 | 160 | 52 | — |
| 121-KRDT | ANDGE | 105 | 160 | 52 | — |
| 121H | ANDGE | 105 | 160 | 26 | — |
| 121HDB | ANDGE | 105 | 160 | 52 | — |
| 121HDF | ANDGE | 105 | 160 | 52 | — |
| 121HDT | ANDGE | 105 | 160 | 52 | — |
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 Angular Contact Ball Bearings series: 72 · 70 · 73 · 719 · B · QJ · S · 32