71944 CD/P4A
Dimensions
|
| d | | 220 | mm |
| D | | 300 | mm |
| B | | 38 | mm |
| d1 | | 244.7 | mm |
| d2 | | 244.7 | mm |
| D1 | | 275.3 | mm |
| r1,2 | min. | 2.1 | mm |
| r3,4 | min. | 1 | mm |
| a | | 54 | mm |
Abutment dimensions
|
|
| da | min. | 231 | mm |
| db | min. | 231 | mm |
| Da | max. | 289 | mm |
| Db | max. | 295 | mm |
| ra | max. | 2 | mm |
| rb | max. | 1 | mm |
| dn | | 251.4 | mm |
Calculation data
Calculation factors for eqivalent bearing loads
| Basic dynamic load rating | C | | 221 | kN |
| Basic static load rating | C0 | | 300 | kN |
| Fatigue load limit | Pu | | 7.8 | kN |
| Attainable speed for grease lubrication | | | 4300 | r/min |
| Attainable speed for oil-air lubrication | | | 6300 | mm/min |
| Ball diameter | Dw | | 25.4 | mm |
| Number of balls | z | | 29 | |
| Reference grease quantity | Gref | | 84 | cm³ |
| Calculation factor | f0 | | 16.5 | |
| Preload (back-to-back, face-to-face) |
| Preload class A | GA | | 850 | N |
| Preload class B | GB | | 1700 | N |
| Preload class C | GC | | 3400 | N |
| Preload class D | GD | | 6800 | N |
| Calculation factor | f | | 1.28 | |
| 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 | | | 224 | N/µm |
| Preload class B | | | 306 | N/µm |
| Preload class C | | | 434 | N/µm |
| Preload class D | | | 635 | N/µm |
Mass
