Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S7011 CB/P4A
S7011 CB/P4A
Dimensions
| d | 55 | mm | |
| D | 90 | mm | |
| B | 18 | mm | |
| d1 | 68.18 | mm | |
| d2 | 66.65 | mm | |
| D2 | 79.39 | mm | |
| r1,2 | min. | 1.1 | mm |
| r3,4 | min. | 0.6 | mm |
| a | 18.8 | mm |
Abutment dimensions
| da | min. | 61 | mm |
| da | max. | 67.6 | mm |
| db | min. | 61 | mm |
| db | max. | 66.1 | mm |
| Da | max. | 84 | mm |
| Db | max. | 86.8 | mm |
| ra | max. | 1 | mm |
| rb | max. | 0.6 | mm |
Calculation data
| Basic dynamic load rating | C | 18.6 | kN | |
| Basic static load rating | C0 | 19 | kN | |
| Fatigue load limit | Pu | 0.465 | kN | |
| Attainable speed for grease lubrication | 22000 | r/min | ||
| Ball diameter | Dw | 6.747 | mm | |
| Number of balls | z | 26 | ||
| Preload and stiffness (back-to-back, face-to-face) | ||||
| Preload class A | GA | 38 | N | |
| Static axial stiffness, preload class A | 38 | N/µm | ||
| Preload class B | GB | 92 | N | |
| Static axial stiffness, preload class B | 50 | N/µm | ||
| Preload class C | GC | 275 | N | |
| Static axial stiffness, preload class C | 80 | N/µm | ||
| Calculation factors | ||||
| Calculation factor | f | 1.06 | ||
| Calculation factor | f1 | 1 | ||
| Calculation factor | f2A | 1 | ||
| Calculation factor | f2B | 1.02 | ||
| Calculation factor | f2C | 1.05 | ||
| Calculation factor | fHC | 1 | ||
| Calculation factor | f0 | 9.7 | ||
Mass
| Mass bearing | 0.42 | kg |