71814 ACD/P4
Dimensions
|
| d | | 70 | mm |
| D | | 90 | mm |
| B | | 10 | mm |
| d1 | | 76.7 | mm |
| d2 | | 76.7 | mm |
| D1 | | 83.5 | mm |
| r1,2 | min. | 0.6 | mm |
| r3,4 | min. | 0.3 | mm |
| a | | 23.7 | mm |
Abutment
dimensions
|
|
| da | min. | 73.2 | mm |
| db | min. | 73.2 | mm |
| Da | max. | 86.8 | mm |
| Db | max. | 88 | mm |
| ra | max. | 0.6 | mm |
| rb | max. | 0.3 | mm |
| dn | | 77.4 | mm |
Calculation
data
Calculation factors
for eqivalent bearing loads
| Basic dynamic load rating | C | | 13 | kN |
| Basic static load rating | C0 | | 15 | kN |
| Fatigue load limit | Pu | | 0.64 | kN |
| Attainable speed for grease lubrication | | | 13000 | r/min |
| Attainable speed for oil-air lubrication | | | 19000 | mm/min |
| Ball diameter | Dw | | 5.556 | mm |
| Number of balls | z | | 31 | |
| Reference grease quantity | Gref | | 1.4 | cm³ |
| Calculation factor | e | | 0.68 | |
| Calculation factor (single, tandem) | Y2 | | 0.87 | |
| Calculation factor (single, tandem) | Y0 | | 0.38 | |
| Calculation factor (single, tandem) | X2 | | 0.41 | |
| Calculation factor (back-to-back, face-to-face) | Y1 | | 0.92 | |
| Calculation factor (back-to-back, face-to-face) | Y2 | | 1.41 | |
| Calculation factor (back-to-back, face-to-face) | Y0 | | 0.76 | |
| Calculation factor (back-to-back, face-to-face) | X2 | | 0.67 | |
| Preload
(back-to-back, face-to-face) |
| Preload class A | GA | | 117 | N |
| Preload class B | GB | | 350 | N |
| Preload class C | GC | | 700 | N |
| Calculation factor | f | | 1.32 | |
| Calculation factor | f1 | | 0.97 | |
| Calculation factor | f2A | | 1 | |
| Calculation factor | f2B | | 1.08 | |
| Calculation factor | f2C | | 1.15 | |
| Calculation factor | fHC | | 1 | |
| Static axial
stiffness |
| Preload class A | | | 152 | N/µm |
| Preload class B | | | 241 | N/µm |
| Preload class C | | | 332 | N/µm |
Mass
