Recommended Fits, Housing
The accuracy of the fits and the geometrically-correct design of all adjacent parts have a direct effect on the accuracy requirements and the dynamic properties of the bearing and the table.
- Stationary outer ring: It is possible to do without a fit in the housing or alternatively to have a G7 fit design. In case of higher dynamic requirements, maintain a minimum clearance of 20 µm for the fit seat of the outer ring to the housing.
- Rotating outer ring: Design the rotating housing with a J6 clearance; here a transition fit results with a tendency for clearance fit. For maximum accuracy requirements, a clearance fit of 0 is to be targeted; in case of higher speeds and prolonged operation durations, do not exceed an interference fit of 5 µm.
Housing Tolerance Table
Legend
- Da: Nominal housing diameter (= bearing outer diameter D, mm)
- Bearing outer Ø tolerance: Tolerance of the bearing outer diameter itself (upper / lower deviation, mm)
- G7: Tolerance zone of the housing for a stationary outer ring (upper / lower deviation, mm)
- J6: Tolerance zone of the housing for a rotating outer ring (upper / lower deviation, mm)
- T1: Roundness tolerance (µm)
- T3: Perpendicularity tolerance (µm)
- Rmax: Maximum corner radius (mm)
| Designation | Housing Da [mm] | Bearing outer Ø tolerance [mm] | Stationary outer ring (housing G7) | Rotating outer ring (housing J6) | Rmax [mm] | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| upper | lower | G7 upper | G7 lower | T1 / T3 [µm] | J6 upper | J6 lower | T1 [µm] | T3 [µm] | |||
| AXRY 50-EX | 126 | 0 | −0.011 | +0.054 | +0.014 | 8 | +0.018 | −0.007 | 5 | 5 | 0.1 |
| AXRY 80-EX | 146 | 0 | −0.011 | +0.054 | +0.014 | 8 | +0.018 | −0.007 | 5 | 5 | 0.1 |
| AXRY 100-EX | 185 | 0 | −0.015 | +0.061 | +0.015 | 8 | +0.022 | −0.007 | 7 | 7 | 0.1 |
| AXRY 120-EX | 210 | 0 | −0.015 | +0.061 | +0.015 | 10 | +0.022 | −0.007 | 7 | 7 | 0.3 |
| AXRY 150-EX | 240 | 0 | −0.015 | +0.061 | +0.015 | 10 | +0.022 | −0.007 | 7 | 7 | 0.3 |