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Can a rough running RPC cause the three phase machine to run rough?

stoneaxe

Stainless
Joined
Mar 2, 2010
Location
pacific northwest
We have an older RPC (20 years)and the bearings are needing to be replaced.
The machine this powers seems to be vibrating more than it used to. (7.5hp wood shaper). Can this be the RPC? I can't find any obvious bad belt or bearing in the shaper.
 
There are ways that could happen, but the bearings would have to be pretty bad, I'd think.

Check the voltages. If possible look at the waveform. Rough motor may mean it is semi-single-phased.
 








 
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