Specifications of SKF Bearing 71920 CB/HCP4AL
Dimensions
d | 100.0mm | Bore diameter |
D | 140.0mm | Outside diameter |
B | 20.0mm | Width |
d1 | 114.92mm | Shoulder diameter of inner ring (large side face) |
d2 | 113.16mm | Shoulder diameter of inner ring (small side face) |
D2 | 128.7mm | Recess diameter of outer ring (large side face) |
b | 2.2mm | Width of lubrication groove |
C1 | 10.9mm | Distance from outer ring side face to lubrication groove / lubrication hole |
C2 | 4.5mm | Distance from outer ring side face to O-ring groove |
C3 | 2.9mm | Distance from outer ring side face to O-ring groove |
r1,2 | 1.1mm | Chamfer dimension (large side face) |
r3,4 | 0.6mm | Chamfer dimension (small side face) |
a | 26.2mm | Distance from side face to pressure point |
Abutment dimensions
da | 106.0mm | Diameter of shaft abutment |
db | 106.0mm | Diameter of shaft abutment |
Da | 134.0mm | Diameter of housing abutment |
Db | 136.8mm | Diameter of housing abutment |
ra | 1.0mm | Radius of fillet |
rb | 0.6mm | Radius of fillet |
Calculation data
Basic dynamic load rating | C | 21.6kN |
Basic static load rating | C0 | 22.4kN |
Fatigue load limit | Pu | 0.63kN |
Attainable speed for grease lubrication | 15000.0r/min | |
Attainable speed for oil-air lubrication | 24000.0r/min | |
Contact angle | u03b1 | 15.0u00b0 |
Ball diameter | Dw | 7.938mm |
Number of balls | z | 37.0 |
Reference grease quantity | Gref | 9.96cmu00b3 |
Mass
Mass | 0.8kg |