| Name | Value |
|---|---|
| Bearing number | W 638/4 R-2RS1 |
| Size (mm) | 4x9x4 |
| Brand | MBY |
| Bore Diameter (mm) | 4 |
| Outer Diameter (mm) | 9 |
| Width (mm) | 4 |
| Name | Value |
|---|---|
| d | 4 mm |
| D | 9 mm |
| B | 4 mm |
| d1 | - 5.2 mm |
| D2 | - 8.1 mm |
| D3 | 10.3 mm |
| C | 1 mm |
| r1,2 | min. - 0.1 mm |
| da | min. - 4.6 mm |
| ra | max. - 0.1 mm |
| Basic dynamic load rating | C - 0.364 kN |
| Basic static load rating | C0 - 0.114 kN |
| Fatigue load limit | Pu - 0.005 kN |
| Limiting speed | 40000 r/min |
| Calculation factor | kr - 0.02 |
| Calculation factor | f0 - 6.5 |
| Mass bearing | 0.0011 kg |
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