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W 638/4-2Z
Single row deep groove ball bearings with a snap ring groove
Deep groove ball bearings from the SKF Rolling Bearings catalogue, page 318.
- Series: Single row deep groove ball bearings with a snap ring groove
- Bore d: 4 mm
- Outside diameter D: 9 mm
- Width B / T / H: 4 mm
- Dynamic load rating C: 0.364 kN
- Static load rating C0: 0.114 kN
- Limiting speed: 70,000 r/min
- Mass: 0.00093 kg
Specifications
Principal dimensions
| Property | Value |
|---|---|
| d | 4 mm |
| D | 9 mm |
| B | 4 mm |
Performance data
| Property | Value |
|---|---|
| dynamic · C | 0.364 kN |
| static · C0 | 0.114 kN |
| limit · Pu | 0.005 kN |
| Reference speed | 140 000 r/min |
| Limiting speed | 70 000 r/min |
| Mass | 0.93 g |