38 models in the 637 series, 2.5–20 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) | |
|---|---|---|---|---|---|
| 637 | TIMKEN | Cross-ref → | |||
| 637 - 632-B | TIMKEN | — | |||
| 637-2RS | TIMKEN | Cross-ref → | |||
| 637-2RZ | TIMKEN | Cross-ref → | |||
| 637-ZZ | TIMKEN | Cross-ref → | |||
| 637/2.5-2Z | ANDGE | 2.5 | 5 | 2.3 | — |
| 637/4X1-2Z | ANDGE | 4 | 8 | 3 | — |
| 637/5X2-2Z | ANDGE | 5 | 8 | 4 | — |
| 637/6 | ANDGE | 6 | 10 | 3.5 | — |
| 637/7 | ANDGE | 7 | 11 | 3.5 | — |
| 637 | ANDGE | 7 | 26 | 9 | Cross-ref → |
| 637 | NSK | 7 | 26 | 9 | Cross-ref → |
| 637-2RS | ANDGE | 7 | 26 | 9 | Cross-ref → |
| 637-2RS1 | ANDGE | 7 | 26 | 9 | — |
| 637-2RZ | ANDGE | 7 | 26 | 9 | Cross-ref → |
| 637-2Z | ANDGE | 7 | 26 | 9 | — |
| 637-RS | ANDGE | 7 | 26 | 9 | — |
| 637-RS1 | ANDGE | 7 | 26 | 9 | — |
| 637-RZ | ANDGE | 7 | 26 | 9 | — |
| 637-Z | ANDGE | 7 | 26 | 9 | — |
| 637-ZZ | ANDGE | 7 | 26 | 9 | Cross-ref → |
| 637N | ANDGE | 7 | 26 | 9 | — |
| 637NR | ANDGE | 7 | 26 | 9 | — |
| 637ZZ | ANDGE | 7 | 26 | 9 | Cross-ref → |
| 637ZZ1 | NSK | 7 | 26 | 9 | — |
| 637/8 | ANDGE | 8 | 12 | 3.5 | — |
| 63701X3 | ANDGE | 12 | 17 | 4.5 | — |
| 63701X3-2Z | ANDGE | 12 | 17 | 4.5 | — |
| 63701X3-Z | ANDGE | 12 | 17 | 4.5 | — |
| 63702X3 | ANDGE | 15 | 20 | 4.5 | — |
| 63702X3-2Z | ANDGE | 15 | 20 | 4.5 | — |
| 63702X3-Z | ANDGE | 15 | 20 | 4.5 | — |
| 63703X1 | ANDGE | 17 | 22 | 5 | — |
| 63703X1-2Z | ANDGE | 17 | 22 | 5 | — |
| 63703X1-Z | ANDGE | 17 | 22 | 5 | — |
| 63704X1 | ANDGE | 20 | 25 | 5 | — |
| 63704X1-2Z | ANDGE | 20 | 25 | 5 | — |
| 63704X1-Z | ANDGE | 20 | 25 | 5 | — |
637 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