Specifications of SKF Bearing W 639/3 R-2Z
Dimensions
d | 3.0mm | Bore diameter |
D | 8.0mm | Outside diameter |
B | 4.0mm | Width |
d1 | 4.35mm | Shoulder diameter |
D2 | 7.25mm | Recess diameter |
D3 | 9.5mm | Flange diameter |
C | 0.9mm | Flange width |
r1,2 | 0.15mm | Chamfer dimension |
Abutment dimensions
da | 3.9mm | Diameter of shaft abutment |
da | 4.3mm | Diameter of shaft abutment |
ra | 0.15mm | Radius of shaft or housing fillet |
Calculation data
Basic dynamic load rating | C | 0.319kN |
Basic static load rating | C0 | 0.09kN |
Fatigue load limit | Pu | 0.004kN |
Reference speed | 150000.0r/min | |
Limiting speed | 75000.0r/min | |
Minimum load factor | kr | 0.025 |
Calculation factor | f0 | 6.1 |
Mass
Mass bearing | 0.000922kg |
Tolerance class
Dimensional tolerances | Normal |
Radial run-out | Normal |