Fits for drawn cup needle roller bearings with or without closed end
Recommendations for the shaft
Diameter tolerance | Roundness tolerance max. | Parallelism Tolerance max. | Recommended maximum mean roughness value (μm) |
Hardness |
---|---|---|---|---|
h6 | IT3 | IT3 | Ra 0,2 (Rz 1) [grinded] | min. 58 HRC |
If the shaft cannot be produced with the above properties, the bearings can be combined with our inner rings. |
Recommendations for the housing bore
Housing material 1) | Tolerance class | Roundness tolerance max. | Parallelism Tolerance max. | Recommended maximum mean roughness value (μm) |
---|---|---|---|---|
Housing bore seat | ||||
Steel, cast iron | N6 | IT5/2 | IT5/2 | Ra 0,8 (Rz 4) |
Aluminium (Al) | R6 | IT5/2 | IT5/2 | Ra 0,8 (Rz 4) |
Magnesium (Mg) | S6 | IT5/2 | IT5/2 | Ra 0,8 (Rz 4) |
1) For non-rigid housings, the appropriate shaft tolerance for the desired operating clearance can be determined through trial and error. |
This information is to be seen as a recommendation. The data has been carefully compiled from various sources, but no guarantee is given for any information.