I was reading the thread about old VS new electric motors and it got me thinking about some work I do.
I sleeve motor endbells occasionally for a rewind shop when they get real busy. A lot of the time the bores probably aren't any worse than what they were when they left the factory that made them. The shop always gives me the bearing fit specs and I can usually hit them fine, but what bothers me is how flimsy the endbells are and how tight the fit tolerances are. I don't think the shop can actually measure what they ask of me.
Sometimes I have to get pretty creative to hold onto the endbells without distorting them too much. I think any distortion will effect the bore job and I'd wager that the whole mess distorts when the motors are final assembled because the housings and frame aren't true.
How do other's handle this kind of work? I'm fine with just doing what they ask of me, but are there other steps that should be done- Like truing up all the mating surfaces- Before endbell bearing bores are cut/sleeved?
I sleeve motor endbells occasionally for a rewind shop when they get real busy. A lot of the time the bores probably aren't any worse than what they were when they left the factory that made them. The shop always gives me the bearing fit specs and I can usually hit them fine, but what bothers me is how flimsy the endbells are and how tight the fit tolerances are. I don't think the shop can actually measure what they ask of me.
Sometimes I have to get pretty creative to hold onto the endbells without distorting them too much. I think any distortion will effect the bore job and I'd wager that the whole mess distorts when the motors are final assembled because the housings and frame aren't true.
How do other's handle this kind of work? I'm fine with just doing what they ask of me, but are there other steps that should be done- Like truing up all the mating surfaces- Before endbell bearing bores are cut/sleeved?