Specifications of SKF Bearing NU 421 M
Dimensions
| d | 105.0mm | Bore diameter |
| D | 260.0mm | Outside diameter |
| B | 60.0mm | Width |
| D1 | 206.3mm | Shoulder diameter of outer ring |
| F | 144.5mm | Chamfer dimension of loose flange ring |
| r1,2 | 4.0mm | Chamfer dimension |
| r3,4 | 4.0mm | Chamfer dimension |
| s | 4.9mm | Permissible axial displacement |
Abutment dimensions
| da | 124.0mm | Diameter of spacer sleeve |
| da | 140.0mm | Diameter of spacer sleeve |
| db | 147.0mm | Diameter of shaft abutment |
| Da | 241.0mm | Diameter of housing abutment |
| ra | 3.0mm | Radius of fillet |
| rb | 3.0mm | Radius of fillet |
Calculation data
| Basic dynamic load rating | C | 501.0kN |
| Basic static load rating | C0 | 570.0kN |
| Fatigue load limit | Pu | 64.0kN |
| Reference speed | 2800.0r/min | |
| Limiting speed | 3400.0r/min | |
| Minimum load factor | kr | 0.15 |
| Limiting value | e | 0.2 |
| Axial load factor | Y | 0.6 |
Mass
| Mass | 17.3kg |
