Calibrating the bearing bore after mounting
(Only applies to P1 plain bearings)
Calibration
KS PERMAGLIDE® plain bearings are ready to install on delivery, and should only be calibrated if a bearing clearance with a narrower tolerance cannot otherwise be reached.
Attention:
Calibration considerably shortens the service life of KS PERMAGLIDE® P1 bushes (see Tab. 1).
depth Eht > 0.6, HRC 56 to 64
2 KS PERMAGLIDE® P10 bush
3 Housing
B Bush width l DiE Diameter of the bush in press-fit state l dK Diameter of the calibrating mandrel l r Edge, rounded
Figure 1 shows calibration using a mandrel. Table 1 contains standard values for the diameter of the calibrating mandrel dK. Precise values can only be ascertained through tests.
Better possibilities
The bearing clearance tolerance can be reduced through the following measures, which do not adversely affect service life:
- Narrower tolerances for housing bore
- Narrower shaft tolerances
Desired inside diameter of bush | Diameter of calibrating mandrel1) dK | Service life2) |
|---|---|---|
DiE | - | 100% LN |
DiE+0.02 | DiE+0.06 | 80% LN |
DiE+0.03 | DiE+0.08 | 60% LN |
DiE+0.04 | DiE+0.10 | 30% LN |
Tab. 1: Standard values for the calibration mandrel diameter and the reduction in service life
DiE Inside diameter of the bush in press-fit state.
1) Standard value, based on steel housing.
2) Standard value for dry running.
Contact
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Application examples
Take a look at our application examples with KS PERMAGLIDE® plain bearings