71928 CD/P4A
Dimensions
|
| d | | 140 | mm |
| D | | 190 | mm |
| B | | 24 | mm |
| d1 | | 155.4 | mm |
| d2 | | 155.4 | mm |
| D1 | | 174.6 | mm |
| r1,2 | min. | 1.5 | mm |
| r3,4 | min. | 0.6 | mm |
| a | | 34.2 | mm |
Abutment
dimensions
|
|
| da | min. | 147 | mm |
| db | min. | 147 | mm |
| Da | max. | 183 | mm |
| Db | max. | 186 | mm |
| ra | max. | 1.5 | mm |
| rb | max. | 0.6 | mm |
| dn | | 159.5 | mm |
Calculation
data
Calculation factors
for eqivalent bearing loads
| Basic dynamic load rating | C | | 95.6 | kN |
| Basic static load rating | C0 | | 116 | kN |
| Fatigue load limit | Pu | | 3.9 | kN |
| Attainable speed for grease lubrication | | | 6700 | r/min |
| Attainable speed for oil-air lubrication | | | 10000 | mm/min |
| Ball diameter | Dw | | 15.875 | mm |
| Number of balls | z | | 29 | |
| Reference grease quantity | Gref | | 21.6 | cm³ |
| Calculation factor | f0 | | 16.6 | |
| Preload
(back-to-back, face-to-face) |
| Preload class A | GA | | 360 | N |
| Preload class B | GB | | 720 | N |
| Preload class C | GC | | 1440 | N |
| Preload class D | GD | | 2880 | N |
| Calculation factor | f | | 1.29 | |
| 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 | | | 146 | N/µm |
| Preload class B | | | 201 | N/µm |
| Preload class C | | | 286 | N/µm |
| Preload class D | | | 420 | N/µm |
Mass
