71948 CD/P4A
Dimensions
|
| d | | 240 | mm |
| D | | 320 | mm |
| B | | 38 | mm |
| d1 | | 264.7 | mm |
| d2 | | 264.7 | mm |
| D1 | | 295.3 | mm |
| r1,2 | min. | 2.1 | mm |
| r3,4 | min. | 1 | mm |
| a | | 56.6 | mm |
Abutment dimensions
|
|
| da | min. | 251 | mm |
| db | min. | 251 | mm |
| Da | max. | 309 | mm |
| Db | max. | 315 | mm |
| ra | max. | 2 | mm |
| rb | max. | 1 | mm |
| dn | | 271.4 | mm |
Calculation data
Calculation factors for eqivalent bearing loads
| Basic dynamic load rating | C | | 229 | kN |
| Basic static load rating | C0 | | 325 | kN |
| Fatigue load limit | Pu | | 8.2 | kN |
| Attainable speed for grease lubrication | | | 3800 | r/min |
| Attainable speed for oil-air lubrication | | | 5600 | mm/min |
| Ball diameter | Dw | | 25.4 | mm |
| Number of balls | z | | 31 | |
| Reference grease quantity | Gref | | 93 | cm³ |
| Calculation factor | f0 | | 16.7 | |
| Preload (back-to-back, face-to-face) |
| Preload class A | GA | | 860 | N |
| Preload class B | GB | | 1720 | N |
| Preload class C | GC | | 3440 | N |
| Preload class D | GD | | 6880 | N |
| Calculation factor | f | | 1.32 | |
| Calculation factor | f1 | | 1 | |
| Calculation factor | f2A | | 1 | |
| Calculation factor | f2B | | 1.04 | |
| Calculation factor | f2C | | 1.09 | |
| Calculation factor | f2D | | 1.15 | |
| Calculation factor | fHC | | 1 | |
| Static axial stiffness |
| Preload class A | | | 237 | N/µm |
| Preload class B | | | 325 | N/µm |
| Preload class C | | | 461 | N/µm |
| Preload class D | | | 678 | N/µm |
Mass
