Bearings, units and housings -- Super-precision bearings -- Cylindrical roller bearings -- Cylindrical roller bearings, double row, super-precision -- SKF NNU 4928 B/SPW33
NNU 4928 B/SPW33
Dimensions
| d | 140 | mm | |
| D | 190 | mm | |
| B | 50 | mm | |
| D1 | 172 | mm | |
| F | 156 | mm | |
| b | 5.5 | mm | |
| K | 3 | mm | |
| r1,2 | min. | 1.5 | mm |
| s | max. | 2.2 | mm |
Abutment dimensions
| da | min. | 147 | mm |
| da | max. | 154 | mm |
| db | min. | 159 | mm |
| Da | max. | 182 | mm |
| ra | max. | 1.5 | mm |
| dn | 157 | mm |
Calculation data
| Basic dynamic load rating | C | 190 | kN | |
| Basic static load rating | C0 | 400 | kN | |
| Fatigue load limit | Pu | 41.5 | kN | |
| Attainable speed for grease lubrication | 4000 | r/min | ||
| Attainable speed for oil-air lubrication | 4500 | r/min | ||
| Reference grease quantity | Gref | 45 | cm³ | |
| Static radial stiffness (guideline value) | 3670 | N/µm |
Mass
| Mass bearing | 4.1 | kg |