Specifications of SKF Bearing 71904 ACE/HCP4AH
Dimensions
d | 20.0mm | Bore diameter |
D | 37.0mm | Outside diameter |
B | 9.0mm | Width |
d1 | 25.65mm | Shoulder diameter of inner ring (large side face) |
d2 | 24.4mm | Shoulder diameter of inner ring (small side face) |
D1 | 31.49mm | Shoulder diameter of outer ring (large side face) |
K | 0.5mm | Diameter of lubrication hole |
C1 | 5.45mm | Distance from outer ring side face to lubrication groove / lubrication hole |
r1,2 | 0.3mm | Chamfer dimension (large side face) |
r3,4 | 0.15mm | Chamfer dimension (small side face) |
a | 11.2mm | Distance from side face to pressure point |
Abutment dimensions
da | 22.0mm | Diameter of shaft abutment |
db | 22.0mm | Diameter of shaft abutment |
Da | 35.0mm | Diameter of housing abutment |
Db | 36.2mm | Diameter of housing abutment |
ra | 0.3mm | Radius of fillet |
rb | 0.15mm | Radius of fillet |
dn | 26.7mm | Position of oil nozzle |
Calculation data
Basic dynamic load rating | C | 4.68kN |
Basic static load rating | C0 | 2.24kN |
Fatigue load limit | Pu | 0.068kN |
Attainable speed for grease lubrication | 60000.0r/min | |
Attainable speed for oil-air lubrication | 95000.0r/min | |
Contact angle | u03b1 | 25.0u00b0 |
Ball diameter | Dw | 4.762mm |
Number of balls | z | 14.0 |
Reference grease quantity | Gref | 0.5cmu00b3 |
Mass
Mass | 0.032kg |