Sliding factor b3 and constant KM for steel/PTFE FRP sliding contact surface combination
| Bearing type | Nominal bore diameter | Sliding factor | Constant | ||
| Series | d | b3 | KM | ||
| over | incl. | ||||
| - | mm | - | - | ||
| Radial bearings | |||||
| GEP .. FS | - | 180 | 1 | 1 055 | |
| 180 | 440 | 1,15 | 1 055 | ||
| 440 | - | 1,35 | 1 055 | ||
| GEC .. FBAS | - | 440 | 1 | 1 055 | |
| 440 | - | 1,15 | 1 055 | ||
| Angular contact bearings1) | |||||
| GAC .. F | - | 60 | 1 | 480 | |
| 60 | - | 1,5 | 480 | ||
| Thrust bearings | |||||
| GX .. F | - | 60 | 1 | 670 | |
| 60 | - | 1,5 | 670 | ||
| Rod ends | 1 | 530 | |||
- 1) For preloaded bearings that cannot be re-adjusted, always use b3 = 1.
