Bearing regreasing procedure for motor

[PAP]

Dear All
Please suggest me about the procedure for the bearing regreasing, should it be done while a motor run or stop? (Due to I found that grease let through the bearing into winding and many motors fail because of this problem)
Thank you
PAP

 

[jbartos]

Suggestion: Visit

http://www.machinerylubrication.com/article_detail.asp?articleid=339&relatedbookgroup=Lubrication

for more info

 

[electricpete]

It is preferred to do it with the motor running if you can safely access the fill and drain fittings (clearance to rotating parts).

 

[electricpete]

Here is one regreasing procedure.

http://www.reliance.com/prodserv/motgen/h7000ch1.htm#Greasing Ball and Roller Bearings

In the ideal world, you would follow the recommendations of the motor manufacturer, since there are subtle differences in bearing seals, and the cavities/housing in which the bearing sits, and the flowpaths from fill to bearing to drain.

In the real world most people find a method they are comfortable with and stick with it.

Some of the important parts of the procedure:
remove the fill and drain plugs and clean fittings.
inject the proper quantity (see lots of charts for lub quantity based on bearing size, speed, duty).
Run the motor for 1-2 hours with drain plug removed to allow excess grease to drain.
Replace plug.

 

[jbartos]

Suggestion: The procedures for bearing regreasing vary according to:
1. Type of bearing
2. Type of lubricant
3. Type of motor