Specifications of SKF Bearing 7228 CD/HCP4A
Dimensions
d | 140.0mm | Bore diameter |
D | 250.0mm | Outside diameter |
B | 42.0mm | Width |
d1 | 176.8mm | Shoulder diameter of inner ring (large side face) |
d2 | 176.8mm | Shoulder diameter of inner ring (small side face) |
D1 | 213.2mm | Shoulder diameter of outer ring (large side face) |
r1,2 | 3.0mm | Chamfer dimension (large side face) |
r3,4 | 1.5mm | Chamfer dimension (small side face) |
a | 47.3mm | Distance from side face to pressure point |
Abutment dimensions
da | 154.0mm | Diameter of shaft abutment |
db | 154.0mm | Diameter of shaft abutment |
Da | 236.0mm | Diameter of housing abutment |
Db | 241.0mm | Diameter of housing abutment |
ra | 2.5mm | Radius of fillet |
rb | 1.5mm | Radius of fillet |
dn | 184.8mm | Position of oil nozzle |
Calculation data
Basic dynamic load rating | C | 221.0kN |
Basic static load rating | C0 | 240.0kN |
Fatigue load limit | Pu | 5.3kN |
Attainable speed for grease lubrication | 7000.0r/min | |
Attainable speed for oil-air lubrication | 10000.0r/min | |
Contact angle | u03b1 | 15.0u00b0 |
Ball diameter | Dw | 30.162mm |
Number of balls | z | 18.0 |
Reference grease quantity | Gref | 83.931cmu00b3 |
Mass
Mass | 6.92kg |