71905 CD/P4A
Dimensions
|
| d | | 25 | mm |
| D | | 42 | mm |
| B | | 9 | mm |
| d1 | | 30.6 | mm |
| d2 | | 30.6 | mm |
| D1 | | 36.4 | mm |
| r1,2 | min. | 0.3 | mm |
| r3,4 | min. | 0.2 | mm |
| a | | 9 | mm |
Abutment
dimensions
|
|
| da | min. | 27 | mm |
| db | min. | 27 | mm |
| Da | max. | 40 | mm |
| Db | max. | 40.6 | mm |
| ra | max. | 0.3 | mm |
| rb | max. | 0.2 | mm |
| dn | | 31.8 | mm |
Calculation
data
Calculation factors
for eqivalent bearing loads
| Basic dynamic load rating | C | | 6.8 | kN |
| Basic static load rating | C0 | | 4 | kN |
| Fatigue load limit | Pu | | 0.17 | kN |
| Attainable speed for grease lubrication | | | 36000 | r/min |
| Attainable speed for oil-air lubrication | | | 53000 | mm/min |
| Ball diameter | Dw | | 4.762 | mm |
| Number of balls | z | | 18 | |
| Reference grease quantity | Gref | | 0.54 | cm³ |
| Calculation factor | f0 | | 10.2 | |
| Preload
(back-to-back, face-to-face) |
| Preload class A | GA | | 25 | N |
| Preload class B | GB | | 50 | N |
| Preload class C | GC | | 100 | N |
| Preload class D | GD | | 200 | N |
| Calculation factor | f | | 1.07 | |
| 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 | | | 24 | N/µm |
| Preload class B | | | 32 | N/µm |
| Preload class C | | | 44 | N/µm |
| Preload class D | | | 62 | N/µm |
Mass
