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 85 ATN9/HCP4CDB
BTM 85 ATN9/HCP4CDB
Dimensions
| d | 85 | mm | |
| D | 130 | mm | |
| H | 40.5 | mm | |
| d1 | 105.8 | mm | |
| D1 | 118.7 | mm | |
| r1,2 | min. | 1.1 | mm |
| r3,4 | min. | 0.6 | mm |
Abutment dimensions
| da | min. | 91 | mm |
| Da | max. | 126 | mm |
| ra | max. | 1 | mm |
| rb | max. | 0.6 | mm |
| dn | 102.9 | mm |
Calculation data
Notes
| Basic dynamic load rating | C | 33.5 | kN | |
| Basic static load rating | C0 | 78 | kN | |
| Fatigue load limit | Pu | 3.15 | kN | |
| Attainable speed for grease lubrication | 9100 | r/min | ||
| Attainable speed for oil-air lubrication | 10900 | r/min | ||
| Preload class A | 300 | N | ||
| Preload class B | 900 | N | ||
| Static axial stiffnes for preload A | 287 | N/µm | ||
| Static axial stiffnes for preload B | 432 | N/µm | ||
| Reference grease quantity | Gref | 16.8 | 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 | 1.7 | kg |