SKF
SKF W 639/3-2Z Deep Groove Ball Bearing
Product Code:W 639/3-2Z
Description
Technical specification MetricImperial DIMENSIONS d 3 mmD 8 mmB 4 mmd1? 4.35 mmD2? 7.25 mmr1,2min. 0.15 mm ABUTMENT DIMENSIONS damin. 3.9 mmdamax. 4.3 mmDamax. 7.3 mmramax. 0.15 mm CALCULATION DATA Basic dynamic load ratingC 0.319 kNBasic static load ratingC0 0.09 kNFatigue load limitPu 0.004 kNReference speed 150000 r/minLimiting speed 75000 r/minCalculation factorkr 0.025Calculation factorf0 6.1 MASS Mass bearing 0.000822 kg
Technical Specifications
Technical specification 
DIMENSIONS
| d | 3 mm | |
|---|---|---|
| D | 8 mm | |
| B | 4 mm | |
| d1 | ? 4.35 mm | |
| D2 | ? 7.25 mm | |
| r1,2 | min. 0.15 mm |
ABUTMENT DIMENSIONS
| da | min. 3.9 mm | |
|---|---|---|
| da | max. 4.3 mm | |
| Da | max. 7.3 mm | |
| ra | max. 0.15 mm |
CALCULATION DATA
| Basic dynamic load rating | C | 0.319 kN |
|---|---|---|
| Basic static load rating | C0 | 0.09 kN |
| Fatigue load limit | Pu | 0.004 kN |
| Reference speed | 150000 r/min | |
| Limiting speed | 75000 r/min | |
| Calculation factor | kr | 0.025 |
| Calculation factor | f0 | 6.1 |
MASS
| Mass bearing | 0.000822 kg |
|---|