9 models in the BT series, 20–711.2 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) | |
|---|---|---|---|---|---|
| BT204 | NACHI | 20 | 24.7 | — | |
| BT205 | NACHI | 25 | 27 | — | |
| BT25-4 | ANDGE | 25 | 62 | 18.5 | — |
| BT206 | NACHI | 30 | 30.3 | — | |
| BT207 | NACHI | 35 | 32.9 | — | |
| BT2B 332573 C | SKF | 130 | 300 | 172.496 | — |
| BT2B 332618 A | SKF | 180 | 406.425 | 223.83 | — |
| BT4-8056 G/HA1 | SKF | 500 | 670 | 400.05 | — |
| BT4B 328988 G/HA1VA901 | SKF | 711.2 | 914.4 | 425.45 | — |
BT 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