63800-series
Model list for the 63800-series deep groove ball bearings: bore, outer diameter and width with seal and clearance options. Open a model for full specs and verified equivalents.
10 models 1.5–10 mm bore range Full / partial / verify match grading
| Model | d (mm) | D (mm) | B (mm) | Seal | Clearance | Cross refs |
|---|---|---|---|---|---|---|
| 638-8-ZZ | 8 | 16 | 6 | ZZ | CN | 1 |
| 638-RSR | 8 | 28 | 9 | RSR | CN | 0 |
| W638-1-5-ZZ | 1.5 | 4 | 2 | ZZ | CN | 0 |
| W638-2-ZZ | 2 | 5 | 2.3 | ZZ | CN | 0 |
| W638-2-5-ZZ | 2.5 | 6 | 2.6 | ZZ | CN | 2 |
| W638-3-ZZ | 3 | 7 | 3 | ZZ | CN | 0 |
| W638-4-ZZ | 4 | 9 | 4 | ZZ | CN | 0 |
| W638-5-ZZ | 5 | 11 | 5 | ZZ | CN | 0 |
| W638-8-ZZ | 8 | 16 | 6 | ZZ | CN | 1 |
| W63800-ZZ | 10 | 19 | 7 | ZZ | CN | 0 |