Housing Bushes
The housing bore should have a chamfer fGx20°±5°,This
chamfer makes it easier to press the bushes into the housing.
Housing bore
diameter dG
Chamfer with fG
dG≤30
0.8±0.3
30<dG≤80
1.2±0.4
80<dG≤180
1.8±0.8
180<dG
2.5±1.0
Flange Bushes
The radius at the transition from the radial to the axial component
must be taken into consideration for flange bushes. A sufficiently
large chamfer must be provided on the housing to prevent the
flanged bushes fouling in the area of the radius. Sufficient
support must be provided for the flange in applications with
axial loading.
Housing bore
diameter dG
Chamfer with fG
dG≤10
1.2±0.2
10<dG
1.7±0.2
Shaft o make fitting easier, the shaft ends should be chamfered.
All sharp edges which could damage the sliding layer must be
broken. Higher surface qualities will extend the service life
only slightly whereas greater roughness depths will reduce the
service life considerably. Ground or drawn surfaces are preferred.
The surface finish of the mating material should be between
Ra 0.2- Ra0.8 um obtained by grinding normally.
incorrect
correct
Seals
If increased levels of contamination occur or the bearing is
used in an aggressive environment, the bearing position should
be protected. The usual solution is to design the surrounding
structure so that the contamination cannot reach the bearing
position. A collar of grease may also be used or shaft seals
if the level of contamination is particularly high.
