Bearings, units and housings -- Super-precision bearings -- Double direction angular contact thrust ball bearings -- Angular contact thrust ball bearings, double direction, super-precision -- SKF BTM 65 BTN9/P4CDB
BTM 65 BTN9/P4CDB
Dimensions
| d | 65 | mm | |
| D | 100 | mm | |
| H | 33 | mm | |
| d1 | 80.9 | mm | |
| D1 | 91.1 | mm | |
| r1,2 | min. | 1.1 | mm |
| r3,4 | min. | 0.6 | mm |
Abutment dimensions
| da | min. | 71 | mm |
| Da | max. | 96.8 | mm |
| ra | max. | 1 | mm |
| rb | max. | 0.6 | mm |
| dn | 78.8 | mm |
Calculation data
Notes
| Basic dynamic load rating | C | 26 | kN | |
| Basic static load rating | C0 | 54 | kN | |
| Fatigue load limit | Pu | 2.32 | kN | |
| Attainable speed for grease lubrication | 8400 | r/min | ||
| Attainable speed for oil-air lubrication | 10900 | r/min | ||
| Preload class A | 250 | N | ||
| Preload class B | 750 | N | ||
| Static axial stiffnes for preload A | 342 | N/µm | ||
| Static axial stiffnes for preload B | 510 | N/µm | ||
| Reference grease quantity | Gref | 8.4 | cm³ |
Speed values are applicable to bearings with light preload (suffix DBA). For bearings with a heavy preload (suffix DBB), attainable speeds are about 75% of the quoted values.
Mass
| Mass bearing | 0.9 | kg |