SKF
SKF W 638/2 X-2Z Deep Groove Ball Bearings
Product Code:W 638/2 X-2Z
Description
Technical specificationMetricImperialDIMENSIONSd2 mmD5 mmB2.5 mmd1? 2.7 mmD2? 4.4 mmr1,2min. 0.1 mmABUTMENT DIMENSIONSdamin. 2.6 mmdamax. 2.6 mmDamax. 4.5 mmramax. 0.1 mmCALCULATION DATABasic dynamic load ratingC0.094 kNBasic static load ratingC00.025 kNFatigue load limitPu0.001 kNReference speed200000 r/minLimiting speed100000 r/minCalculation factorkr0.02Calculation factorf06.5MASSMass bearing0.000204 kg
Technical Specifications
Technical specification
DIMENSIONS
| d | 2 mm | |
|---|---|---|
| D | 5 mm | |
| B | 2.5 mm | |
| d1 | ? 2.7 mm | |
| D2 | ? 4.4 mm | |
| r1,2 | min. 0.1 mm |
ABUTMENT DIMENSIONS
| da | min. 2.6 mm | |
|---|---|---|
| da | max. 2.6 mm | |
| Da | max. 4.5 mm | |
| ra | max. 0.1 mm |
CALCULATION DATA
| Basic dynamic load rating | C | 0.094 kN |
|---|---|---|
| Basic static load rating | C0 | 0.025 kN |
| Fatigue load limit | Pu | 0.001 kN |
| Reference speed | 200000 r/min | |
| Limiting speed | 100000 r/min | |
| Calculation factor | kr | 0.02 |
| Calculation factor | f0 | 6.5 |
MASS
| Mass bearing | 0.000204 kg |
|---|