SKF
SKF W 639/2-2Z Deep Groove Ball Bearing
Product Code:W 639/2-2Z
Description
Technical specification MetricImperial DIMENSIONS d 2 mmD 6 mmB 3 mmd1? 3 mmD2? 5.4 mmr1,2min. 0.15 mm ABUTMENT DIMENSIONS damin. 2.9 mmdamax. 2.9 mmDamax. 5.4 mmramax. 0.15 mm CALCULATION DATA Basic dynamic load ratingC 0.19 kNBasic static load ratingC0 0.051 kNFatigue load limitPu 0.002 kNReference speed 180000 r/minLimiting speed 90000 r/minCalculation factorkr 0.025Calculation factorf0 6 MASS Mass bearing 0.000308 kg
Technical Specifications
Technical specification 
DIMENSIONS
| d | 2 mm | |
|---|---|---|
| D | 6 mm | |
| B | 3 mm | |
| d1 | ? 3 mm | |
| D2 | ? 5.4 mm | |
| r1,2 | min. 0.15 mm |
ABUTMENT DIMENSIONS
| da | min. 2.9 mm | |
|---|---|---|
| da | max. 2.9 mm | |
| Da | max. 5.4 mm | |
| ra | max. 0.15 mm |
CALCULATION DATA
| Basic dynamic load rating | C | 0.19 kN |
|---|---|---|
| Basic static load rating | C0 | 0.051 kN |
| Fatigue load limit | Pu | 0.002 kN |
| Reference speed | 180000 r/min | |
| Limiting speed | 90000 r/min | |
| Calculation factor | kr | 0.025 |
| Calculation factor | f0 | 6 |
MASS
| Mass bearing | 0.000308 kg |
|---|