Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71915 CE/HCP4A
71915 CE/HCP4A
Dimensions
| d | 75 | mm | |
| D | 105 | mm | |
| B | 16 | mm | |
| d1 | 84.3 | mm | |
| d2 | 81.8 | mm | |
| D1 | 95.52 | mm | |
| r1,2 | min. | 1 | mm |
| r3,4 | min. | 0.3 | mm |
| a | 20.7 | mm |
Abutment dimensions
| da | min. | 79.6 | mm |
| db | min. | 77 | mm |
| Da | max. | 100.4 | mm |
| Db | max. | 103 | mm |
| ra | max. | 1 | mm |
| rb | max. | 0.3 | mm |
| dn | 86.5 | mm |
Calculation data
| Basic dynamic load rating | C | 22.5 | kN | |
| Basic static load rating | C0 | 17 | kN | |
| Fatigue load limit | Pu | 0.72 | kN | |
| Attainable speed for grease lubrication | 20500 | r/min | ||
| Attainable speed for oil-air lubrication | 32000 | r/min | ||
| Ball diameter | Dw | 9.525 | mm | |
| Number of balls | z | 23 | ||
| Reference grease quantity | Gref | 4.5 | cm³ | |
| Preload and stiffness (back-to-back, face-to-face) | ||||
| Preload class A | GA | 120 | N | |
| Static axial stiffness, preload class A | 60 | N/µm | ||
| Preload class B | GB | 361 | N | |
| Static axial stiffness, preload class B | 95 | N/µm | ||
| Preload class C | GC | 722 | N | |
| Static axial stiffness, preload class C | 131 | N/µm | ||
| Calculation factors | ||||
| Calculation factor | f | 1.16 | ||
| Calculation factor | f1 | 1 | ||
| Calculation factor | f2A | 1 | ||
| Calculation factor | f2B | 1.05 | ||
| Calculation factor | f2C | 1.09 | ||
| Calculation factor | fHC | 1.01 | ||
| Calculation factor | f0 | 8.5 | ||
Mass
| Mass bearing | 0.29 | kg |