Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71922 CB/P4A
71922 CB/P4A
Dimensions
| d | 110 | mm | |
| D | 150 | mm | |
| B | 20 | mm | |
| d1 | 124.42 | mm | |
| d2 | 122.5 | mm | |
| D2 | 139 | mm | |
| r1,2 | min. | 1.1 | mm |
| r3,4 | min. | 0.6 | mm |
| a | 33 | mm |
Abutment dimensions
| da | min. | 116 | mm |
| db | min. | 116 | mm |
| Da | max. | 144 | mm |
| Db | max. | 146.8 | mm |
| ra | max. | 1 | mm |
| rb | max. | 0.6 | mm |
| dn | 125.7 | mm |
Calculation data
| Basic dynamic load rating | C | 34.5 | kN | |
| Basic static load rating | C0 | 44 | kN | |
| Fatigue load limit | Pu | 1 | kN | |
| Attainable speed for grease lubrication | 11000 | r/min | ||
| Attainable speed for oil-air lubrication | 17000 | r/min | ||
| Ball diameter | Dw | 8.731 | mm | |
| Number of balls | z | 37 | ||
| Reference grease quantity | Gref | 11.43 | cm³ | |
| Preload and stiffness (back-to-back, face-to-face) | ||||
| Preload class A | GA | 86 | N | |
| Static axial stiffness, preload class A | 66 | N/µm | ||
| Preload class B | GB | 170 | N | |
| Static axial stiffness, preload class B | 87 | N/µm | ||
| Preload class C | GC | 515 | N | |
| Static axial stiffness, preload class C | 140 | N/µm | ||
| Calculation factors | ||||
| Calculation factor | f | 1.14 | ||
| Calculation factor | f1 | 1 | ||
| Calculation factor | f2A | 1 | ||
| Calculation factor | f2B | 1.02 | ||
| Calculation factor | f2C | 1.07 | ||
| Calculation factor | fHC | 1 | ||
| Calculation factor | f0 | 10 | ||
Mass
| Mass bearing | 0.9 | kg |