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 />
7<br />
Cyl<strong>in</strong>drical<br />
roller bear<strong>in</strong>g +<br />
two universally<br />
matched angular<br />
contact ball <strong>bear<strong>in</strong>gs</strong><br />
mounted<br />
face-to-face<br />
Fig<br />
8<br />
Deep groove<br />
ball bear<strong>in</strong>g +<br />
two universally<br />
matched angular<br />
contact ball <strong>bear<strong>in</strong>gs</strong><br />
mounted<br />
face-to-face<br />
Table<br />
1b<br />
Type of bear<strong>in</strong>g Requirements Guidance Loads Remarks<br />
arrangement Noise Speed Ma<strong>in</strong>ten- Radial Axial Radial Axial<br />
ance<br />
Horizontal arrangements<br />
Cyl<strong>in</strong>drical roller bear<strong>in</strong>g + 3 4 3 5 5 5 5 Electric <strong>motors</strong> with axial loads<br />
two universally matched angular<br />
act<strong>in</strong>g <strong>in</strong> both directions <strong>and</strong> heavy<br />
contact ball <strong>bear<strong>in</strong>gs</strong> (➔ fig 7 ) radial loads, or when axial guidance<br />
is important.<br />
Deep groove ball bear<strong>in</strong>g + 5 4 4 5 5 5 5 Small <strong>electric</strong> <strong>motors</strong> with axial<br />
two universally matched angular<br />
loads act<strong>in</strong>g <strong>in</strong> both directions <strong>and</strong><br />
contact ball <strong>bear<strong>in</strong>gs</strong> (➔ fig 8 ) moderate radial loads or when<br />
axial guidance is important. The<br />
deep groove ball bear<strong>in</strong>g is spr<strong>in</strong>g<br />
preloaded.<br />
5 = Excellent 4 = Very good 3 = Good 2 = Fair 1 = Not recommended<br />
42<br />
www.bergab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21, факс (495) 223-3071
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