Bearings, units and housings -- Super-precision bearings -- Angular contact thrust ball bearings for screw drives -- Angular contact thrust ball bearings for screw drives, single direction, super-precision -- SKF BSD 4072 C
BSD 4072 C
Dimensions
| d | 40 | mm | |
| D | 72 | mm | |
| H | 15 | mm | |
| d1 | 48.69 | mm | |
| d2 | 55 | mm | |
| D1 | 55.1 | mm | |
| D2 | 62.68 | mm | |
| r1,2 | min. | 1.1 | mm |
| a | 59 | mm |
Abutment dimensions
| da | min. | 47.5 | mm |
| db | min. | 44 | mm |
| Da | max. | 65 | mm |
| Db | max. | 64.8 | mm |
| ra | max. | 1 | mm |
Calculation data
| Basic dynamic load rating | C | 36.5 | kN | |
| Basic static load rating | C0 | 98 | kN | |
| Fatigue load limit | Pu | 3.65 | kN | |
| Attainable speed for grease lubrication | 7500 | r/min | ||
| Attainable speed for oil-air lubrication | 9000 | r/min | ||
| Preload class A | 2950 | N | ||
| Preload class B | 5900 | N | ||
| Frictional moment, preload class A | 0.18 | N·m | ||
| Frictional moment, preload class B | 0.32 | N·m | ||
| Static axial stiffnes, preload A | 1080 | N/µm | ||
| Static axial stiffnes, preload B | 1370 | N/µm | ||
| Maximum axial load carrying capacity | Fa | max. | 29.6 | kN |
| Reference grease quantity | Gref | 2.5 | cm³ |
Mass
| Mass bearing | 0.26 | kg |