638/4-2Z
Precision ball bearing > Deep groove ball bearing
638/4-2Z - Deep groove ball bearing - Precision ball bearing
| Product model | 638/4-2Z |
|---|---|
| d | 4 mm |
| D | 9 mm |
| B | 4 mm |
| Limiting speed | 60000 r/min |
| d1 | ≈5.2 mm |
| D2 | ≈8.1 mm |
| Chamfer size (r1,2) | min.0.1 mm |
| da | min.4.6 mm/max.5.1 mm |
| Da | max.8.4 mm |
| ra | max.0.1 mm |
| Pu | 0.005 kN |
| Reference speed(r/min) | 140 000 r/min |
| kr | 0.015 |
| f0 | 6.5 |
| Radial runout | 0.005 kg |
Product Details
The 638/4-2Z is part of the Deep groove ball bearing series within our Precision ball bearing range. It is engineered for high-performance industrial use and delivers reliable operation under demanding working conditions.
Typical applications include: electric motors, pumps, gearboxes, agricultural machinery and automotive systems. For detailed dimensions and load ratings, please refer to the specification table above. Contact FIJ for bulk pricing, technical support or customized solutions.
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638/4-2Z / Deep groove ball bearing / Precision ball bearing