The motor shop did not see any piting on the bearings that would indicate current leakage. The bearings might have failed to do improper bearing greasing. The bearing grease vent port has a cap that needs to be pulled before greasing and this might not have been done in the past on these motors...
We have two 150 HP 480 VAC motors that had bad bearings that cooked/fused themselves to the motor shaft. Our local motor shop had to cut, heat and pull the internal bearing races off the shaft. This damaged the shaft pulling some of the shaft off in the process of pulling.
My question is: If...
The speed is 3565 RPM. The drive end has a direction arrow. CCW facing non drive end. (end bell) Thanks for all the info and advice. We are looking at pruchasing the correct cooling fans from the manufacture to safely run this motor CW. Hopefully the fan swap out will be something our local...
We have a 400 HP, ODP, 4160 volt, 3 phase motor that was built by the manufacture to run CCW. We have a different pump we would like to couple this CCW motor to. Problem is the different pump needs a clockwise rotating motor. Will most likely run louder. Not an issue. Will cooling be an issue...
I am working on getting some quotes for three 400 HP motors that will run our boiler feedwater pumps. They will run 24 hours a day. Continuous duty. The motors will be indoors. Summer about 80 to 90 deg. F. ambient. Winter months about 70 to 80 deg. F ambient. U.S. Electric Titan II motors...
