Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71915 CD/P4A
71915 CD/P4A
Dimensions
| d | 75 | mm | |
| D | 105 | mm | |
| B | 16 | mm | |
| d1 | 84.2 | mm | |
| d2 | 84.2 | mm | |
| D1 | 95.8 | mm | |
| r1,2 | min. | 1 | mm |
| r3,4 | min. | 0.3 | mm |
| a | 20.1 | mm |
Abutment dimensions
| da | min. | 79.6 | mm |
| db | min. | 79.6 | mm |
| Da | max. | 100 | mm |
| Db | max. | 103 | mm |
| ra | max. | 1 | mm |
| rb | max. | 0.3 | mm |
| dn | 86.7 | mm |
Calculation data
| Basic dynamic load rating | C | 35.8 | kN | |
| Basic static load rating | C0 | 37.5 | kN | |
| Fatigue load limit | Pu | 1.56 | kN | |
| Attainable speed for grease lubrication | 12000 | r/min | ||
| Attainable speed for oil-air lubrication | 19000 | r/min | ||
| Ball diameter | Dw | 9.525 | mm | |
| Number of balls | z | 26 | ||
| Reference grease quantity | Gref | 5.1 | cm³ | |
| Preload and stiffness (back-to-back, face-to-face) | ||||
| Preload class A | GA | 130 | N | |
| Static axial stiffness, preload class A | 80 | N/µm | ||
| Preload class B | GB | 260 | N | |
| Static axial stiffness, preload class B | 110 | N/µm | ||
| Preload class C | GC | 520 | N | |
| Static axial stiffness, preload class C | 156 | N/µm | ||
| Preload class D | GD | 1040 | N | |
| Static axial stiffness, preload class D | 228 | N/µm | ||
| Calculation factors | ||||
| Calculation factor | f | 1.21 | ||
| Calculation factor | f1 | 1 | ||
| Calculation factor | f2A | 1 | ||
| Calculation factor | f2B | 1.04 | ||
| Calculation factor | f2C | 1.09 | ||
| Calculation factor | f2D | 1.15 | ||
| Calculation factor | fHC | 1 | ||
| Calculation factor | f0 | 16.3 | ||
Mass
| Mass bearing | 0.35 | kg |