Specifications of SKF Bearing W 639/2-2Z
Dimensions
d | 2.0mm | Bore diameter |
D | 6.0mm | Outside diameter |
B | 3.0mm | Width |
d1 | 3.0mm | Shoulder diameter |
d2 | 3.0mm | Recess diameter |
D2 | 5.4mm | Recess diameter |
r1,2 | 0.15mm | Chamfer dimension |
Abutment dimensions
da | 2.9mm | Diameter of shaft abutment |
da | 2.9mm | Diameter of shaft abutment |
Da | 5.4mm | Diameter of housing abutment |
ra | 0.15mm | Radius of shaft or housing fillet |
Calculation data
Basic dynamic load rating | C | 0.19kN |
Basic static load rating | C0 | 0.051kN |
Fatigue load limit | Pu | 0.002kN |
Reference speed | 180000.0r/min | |
Limiting speed | 90000.0r/min | |
Minimum load factor | kr | 0.025 |
Calculation factor | f0 | 6.0 |
Mass
Mass bearing | 0.000308kg |
Tolerance class
Dimensional tolerances | Normal |
Radial run-out | Normal |