Radial Bearing Tolerances by Operating Condition, Mount, and Shaft Diameter
Operating conditions | Examples of mounting | Shaft diameter [mm] | Tolerance |
ball | roller | spherical - roller |
taper - roller |
Point load of inner ring |
Small and variable load | electrical instruments, fans | 18 - 100 | < 40 | - | j6 |
cutting machines, conveyors | 100 - 200 | 40 - 140 | - | k6 |
Medium and high load | common loading, cutting machines | < 18 | - | - | j5 |
turbines, electrical motors | 18 - 140 | < 40 | < 40 | k5 |
gear boxes, comb. engines | 100 - 140 | 40 - 100 | 40 - 65 | m5 |
pumps | 140 - 200 | 100 - 140 | 65 - 100 | m6 |
- | 200 - 280 | 140 - 200 | 100 - 140 | n6 |
High load, shocks | bearing for axles of rail trucks | - | 50 - 140 | 50 - 100 | n6 |
traction motors, rolling mills | - | 140 - 500 | 100 - 500 | p6 |
High mounting precision | cutting machines | < 18 | - | - | h5 |
- | 18 - 100 | < 40 | - | j5 |
- | 100 - 200 | 40 - 140 | - | k5 |
Only axial load | All diameters | j6 |
Note: Loading is small for C / P > 15, common for C / P = 7 - 15, high for C / P < 7.