User's Manual

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Maintenance
To Replace Antifriction Bearings
1. Remove bolts holding end caps to housings.
2. Remove bolts holding bearing housings to yoke.
3. Remove bearing housings.
4. Remove the bearing with a puller. See Figure 6.
5. Check shaft and housing diameter for proper size
with micrometer.
6. Heat the new bearing in an oven (200°F). While
it is hot, slide the bearing onto shaft – make
certain that the inner race makes a firm even
contact with shaft shoulder. Do not subject
bearing to impact.
7. Let bearing cool - pack bearing caps with the
proper grease.
8. Reassemble end caps and housings.
The amount of grease to be used when repacking a
bearing after cleaning or replacement is shown in the
table below:
Grease Quantity*
(End Caps)
Type
Bearing
Operating
Bearing
(Shaft)
Outer Inner
Deep Groove
Ball
Horizontal 2/3 Full 1/3 Full
Roller Horizontal 1/3 Full 1/3 Full
*Pack all open bearings full between balls or roller but remove
excess grease on outside of retainers.
Figure 3. Ball Bearing Construction
500, 580 & SH400 Frames
Figure 4. Ball Bearing Construction
880 & SH450 Frames
Figure 5. Ball Bearing Construction
SH560 Frame
NOTE
1. For best results, seal should be positioned
flush with outer-most bearing housing
surface. (Some frame sizes have shaft seal
on only one end of the motor)
Shaft Seal
See NOTE box;
1.) is for CGZ, CZ
& 1LA4