Specifications of SKF Bearing 31318
| Dimension series | 7GB |
Dimensions
| d | 90.0mm | Bore diameter |
| D | 190.0mm | Outside diameter |
| T | 46.5mm | Total width |
| d1 | 138.88mm | Shoulder diameter of inner ring |
| B | 43.0mm | Width of inner ring |
| C | 30.0mm | Width of outer ring |
| r1,2 | 4.0mm | Chamfer dimension of inner ring |
| r3,4 | 3.0mm | Chamfer dimension of outer ring |
| a | 57.3mm | Distance side face to pressure point |
Abutment dimensions
| da | 110.0mm | Diameter of shaft abutment |
| db | 105.5mm | Diameter of shaft abutment |
| Da | 151.0mm | Diameter of housing abutment |
| Da | 177.5mm | Diameter of housing abutment |
| Db | 179.0mm | Diameter of housing abutment |
| Ca | 5.0mm | Minimum width of space required in housing on large side face |
| Cb | 16.5mm | Minimum width of space required in housing on small side face |
| ra | 4.0mm | Radius of shaft fillet |
| rb | 3.0mm | Radius of housing fillet |
Calculation data
| Basic dynamic load rating | C | 283.0kN |
| Basic static load rating | C0 | 315.0kN |
| Fatigue load limit | Pu | 35.5kN |
| Reference speed | 2400.0r/min | |
| Limiting speed | 3400.0r/min | |
| Limiting value | e | 0.83 |
| Axial load factor | Y | 0.72 |
| Axial load factor | Y0 | 0.4 |
Mass
| Mass | 5.39kg |
