SKF
SKF 628/4-2Z Deep Groove Ball Bearings
Product Code:628/4-2Z
Description
Technical specificationMetricImperialDIMENSIONSd4 mmD9 mmB3.5 mmd1? 5.2 mmD2? 8.1 mmr1,2min. 0.1 mmABUTMENT DIMENSIONSdamin. 4.6 mmdamax. 5.1 mmDamax. 8.4 mmramax. 0.1 mmCALCULATION DATABasic dynamic load ratingC0.423 kNBasic static load ratingC00.116 kNFatigue load limitPu0.005 kNReference speed140000 r/minLimiting speed70000 r/minCalculation factorkr0.015Calculation factorf06.5MASSMass bearing0.00087 kg
Technical Specifications
Technical specification
DIMENSIONS
| d | 4 mm | |
|---|---|---|
| D | 9 mm | |
| B | 3.5 mm | |
| d1 | ? 5.2 mm | |
| D2 | ? 8.1 mm | |
| r1,2 | min. 0.1 mm |
ABUTMENT DIMENSIONS
| da | min. 4.6 mm | |
|---|---|---|
| da | max. 5.1 mm | |
| Da | max. 8.4 mm | |
| ra | max. 0.1 mm |
CALCULATION DATA
| Basic dynamic load rating | C | 0.423 kN |
|---|---|---|
| Basic static load rating | C0 | 0.116 kN |
| Fatigue load limit | Pu | 0.005 kN |
| Reference speed | 140000 r/min | |
| Limiting speed | 70000 r/min | |
| Calculation factor | kr | 0.015 |
| Calculation factor | f0 | 6.5 |
MASS
| Mass bearing | 0.00087 kg |
|---|