Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7040 CD/P4AH1
7040 CD/P4AH1
Dimensions
| d | 200 | mm | |
| D | 310 | mm | |
| B | 51 | mm | |
| d1 | 233.9 | mm | |
| d2 | 233.9 | mm | |
| D1 | 276.1 | mm | |
| K | 0.6 | mm | |
| C1 | 14 | mm | |
| r1,2 | min. | 2.1 | mm |
| r3,4 | min. | 1.1 | mm |
| a | 59.8 | mm |
Abutment dimensions
| da | min. | 211 | mm |
| db | min. | 211 | mm |
| Da | max. | 299 | mm |
| Db | max. | 304 | mm |
| ra | max. | 2 | mm |
| rb | max. | 1 | mm |
| dn | 243.2 | mm |
Calculation data
| Basic dynamic load rating | C | 296 | kN | |
| Basic static load rating | C0 | 390 | kN | |
| Fatigue load limit | Pu | 10.2 | kN | |
| Attainable speed for grease lubrication | 4500 | r/min | ||
| Attainable speed for oil-air lubrication | 6700 | r/min | ||
| Ball diameter | Dw | 34.925 | mm | |
| Number of balls | z | 21 | ||
| Reference grease quantity | Gref | 153 | cm³ | |
| Preload and stiffness (back-to-back, face-to-face) | ||||
| Preload class A | GA | 1100 | N | |
| Static axial stiffness, preload class A | 208 | N/µm | ||
| Preload class B | GB | 2200 | N | |
| Static axial stiffness, preload class B | 280 | N/µm | ||
| Preload class C | GC | 4400 | N | |
| Static axial stiffness, preload class C | 389 | N/µm | ||
| Preload class D | GD | 8800 | N | |
| Static axial stiffness, preload class D | 556 | 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 | 1.05 | ||
| Calculation factor | f2D | 1.09 | ||
| Calculation factor | fHC | 1 | ||
| Calculation factor | f0 | 15.6 | ||
Mass
| Mass bearing | 12.3 | kg |