Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71830 CD/P4
71830 CD/P4
Dimensions
| d | 150 | mm | |
| D | 190 | mm | |
| B | 20 | mm | |
| d1 | 163.35 | mm | |
| d2 | 163.35 | mm | |
| D1 | 176.7 | mm | |
| r1,2 | min. | 1.1 | mm |
| r3,4 | min. | 0.6 | mm |
| a | 32.8 | mm |
Abutment dimensions
| da | min. | 156 | mm |
| db | min. | 156 | mm |
| Da | max. | 184 | mm |
| Db | max. | 186.8 | mm |
| ra | max. | 1 | mm |
| rb | max. | 0.6 | mm |
| dn | 165.6 | mm |
Calculation data
| Basic dynamic load rating | C | 52 | kN | |
| Basic static load rating | C0 | 72 | kN | |
| Fatigue load limit | Pu | 2.36 | kN | |
| Attainable speed for grease lubrication | 6000 | r/min | ||
| Attainable speed for oil-air lubrication | 9000 | r/min | ||
| Ball diameter | Dw | 11.112 | mm | |
| Number of balls | z | 35 | ||
| Reference grease quantity | Gref | 13 | cm³ | |
| Preload and stiffness (back-to-back, face-to-face) | ||||
| Preload class A | GA | 270 | N | |
| Static axial stiffness, preload class A | 136 | N/µm | ||
| Preload class B | GB | 820 | N | |
| Static axial stiffness, preload class B | 236 | N/µm | ||
| Preload class C | GC | 1630 | N | |
| Static axial stiffness, preload class C | 346 | N/µm | ||
| Calculation factors | ||||
| Calculation factor | f | 1.37 | ||
| Calculation factor | f1 | 1 | ||
| Calculation factor | f2A | 1 | ||
| Calculation factor | f2B | 1.09 | ||
| Calculation factor | f2C | 1.16 | ||
| Calculation factor | fHC | 1 | ||
| Calculation factor | f0 | 17.3 | ||
Mass
| Mass bearing | 1.1 | kg |