Ranger16
Well-Known Member
Yup, hindsight is always 20/20.
Looks like a bearing may have collapsed in the past. That stator looks pretty beaten up.Been having a few "problems" with the lathe and working on them one at a time to get them resolved . . .
Today, was a very "interesting" find . . . ( make that plural - finds ) . . .
Been having more and more difficulty with the lathe starting correctly, without me having to start the rotations by hands . . . so my thought was the starting capacitor was bad . . .
Tested the starting capacitor and it's good . . . that's NOT the problem . . .
Pulled out the motor to start going through it and find what's up . . . and found this . . .
( needless to say - this does not look good )
View attachment 904840
So - spent some time working on the misalignment and got it looking like this . . . ( much better )
( sanded the tops with emery cloth to make sure that there were no high spots )
View attachment 904841
Got it all put back together and found that the centrifugal switch ( on the end shaft of the motor ) was not holding in place properly
( it's made of pot metal and it's cracked . . . oh boy )
So now . . . I need my lathe to build a part for my lathe to get the centrifugal switch to work properly . . .
( is this a chicken or the egg question . . . )
Will be working on my friends lathe to make the part to get this working . . . Whooohoooo ! ! !
( always something . . . )
Looks like a bearing may have collapsed in the past. That stator looks pretty beaten up.
Have a good close look at he windings - if necessary you could run some more insulating varnish over them....the stator needs to be standing on end - so the grooves are vertical, for the varnish to run down.
VSD ….Just trying to keep this motor "functional" as the end goal is to replace this with a VSD motor . . .
What the wife doesn't know cannot hurt
Make sure you have an E/Stop in a readily accessible place.Probably will reuse the emergency shut off button, but the forward and reverse buttons will be replaced with 3 position switch . . . and it will also need the addition of a potentiometer to assist with the speed selection . . .