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:

Attention icon

Calibration considerably shortens the service life of KS PERMAGLIDE® P1 bushes (see Tab. 1).

1 Calibrating mandrel, case hardening
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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Download

SI 1419 – KS Permaglide Calibrationg the bearing bore after mounting

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Application examples

Take a look at our application examples with KS PERMAGLIDE® plain bearings

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