Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7019 CD/HCP4A
7019 CD/HCP4A
Dimensions
| d | 95 | mm | |
| D | 145 | mm | |
| B | 24 | mm | |
| d1 | 110.4 | mm | |
| d2 | 110.4 | mm | |
| D1 | 129.6 | mm | |
| r1,2 | min. | 1.5 | mm |
| r3,4 | min. | 1 | mm |
| a | 28.2 | mm |
Abutment dimensions
| da | min. | 102 | mm |
| db | min. | 102 | mm |
| Da | max. | 138 | mm |
| Db | max. | 141 | mm |
| ra | max. | 1.5 | mm |
| rb | max. | 1 | mm |
| dn | 113.7 | mm |
Calculation data
| Basic dynamic load rating | C | 81.9 | kN | |
| Basic static load rating | C0 | 80 | kN | |
| Fatigue load limit | Pu | 3.1 | kN | |
| Attainable speed for grease lubrication | 11000 | r/min | ||
| Attainable speed for oil-air lubrication | 17000 | r/min | ||
| Ball diameter | Dw | 15.875 | mm | |
| Number of balls | z | 21 | ||
| Reference grease quantity | Gref | 15.6 | cm³ | |
| Preload and stiffness (back-to-back, face-to-face) | ||||
| Preload class A | GA | 310 | N | |
| Static axial stiffness, preload class A | 120 | N/µm | ||
| Preload class B | GB | 620 | N | |
| Static axial stiffness, preload class B | 164 | N/µm | ||
| Preload class C | GC | 1240 | N | |
| Static axial stiffness, preload class C | 231 | N/µm | ||
| Preload class D | GD | 2480 | N | |
| Static axial stiffness, preload class D | 335 | N/µm | ||
| Calculation factors | ||||
| Calculation factor | f | 1.15 | ||
| Calculation factor | f1 | 1 | ||
| Calculation factor | f2A | 1 | ||
| Calculation factor | f2B | 1.02 | ||
| Calculation factor | f2C | 1.05 | ||
| Calculation factor | f2D | 1.09 | ||
| Calculation factor | fHC | 1.02 | ||
| Calculation factor | f0 | 15.7 | ||
Mass
| Mass bearing | 1 | kg |