Rolling bearings in electric motors and generators
Rolling bearings in electric motors and generators
Rolling bearings in electric motors and generators
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www.bergab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21, факс (495) 223-3071<br />
2 Bear<strong>in</strong>g arrangements<br />
Select<strong>in</strong>g a bear<strong>in</strong>g arrangement<br />
Fig<br />
3<br />
Arrangement with<br />
alum<strong>in</strong>ium hous<strong>in</strong>gs<br />
equipped<br />
with O-r<strong>in</strong>gs to<br />
prevent outer r<strong>in</strong>g<br />
rotation<br />
Design rules<br />
To prevent the bear<strong>in</strong>g from shear<strong>in</strong>g<br />
the O-r<strong>in</strong>g dur<strong>in</strong>g <strong>in</strong>stallation, the O-<br />
r<strong>in</strong>g groove needs to be sufficiently<br />
recessed. Fig 4 provides guidel<strong>in</strong>es<br />
for dimension<strong>in</strong>g. The groove should be<br />
designed accord<strong>in</strong>g to the st<strong>and</strong>ard<br />
values for static application of O-r<strong>in</strong>gs.<br />
The hardness of the O-r<strong>in</strong>g should<br />
be approximately 70° IRH.<br />
Examples of typical bear<strong>in</strong>g<br />
arrangements<br />
Typical bear<strong>in</strong>g arrangements used <strong>in</strong><br />
<strong>in</strong>dustrial <strong>electric</strong> <strong>motors</strong> <strong>and</strong> <strong>generators</strong><br />
are shown on pages 41 to 46.<br />
Design of the<br />
O-r<strong>in</strong>g groove<br />
e<br />
h<br />
Fig<br />
b<br />
d o<br />
r<br />
D 1<br />
D<br />
e = 0,2 d 0 < r<br />
h = 0,8 d 0<br />
D 1 = D + 2h, tolerance H10<br />
b = 1,4 d 0<br />
4<br />
40<br />
www.bergab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21, факс (495) 223-3071
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