Thanks a lot for all the advice and opinions.
With regards to the over heating event, the motor did run perfectly well for quite some time, after I replaced the broken fan, so I doubt whether the was any damage to the windings or casing. I will have it checked out though, because I intend to use this motor as a standby, should any of the other two 70kw's that I'm using, develop a problem and there's no use in having a standby which isn't 100% reliable.
I'm quite confident that I would be able to turn it down and re-sleeve it successfully. After all, it is my own motor, so should I stuff it up, it won't be the end of the world and I can always take it to the machine shop that I regularly use to rescue it. We have a very good relationship, but I can just imagine the comments I'll have to face, should I call on them to bail me out!
My initial though was to weld the axle and then turn it down, but my toolmaker friend warned me that the heat might warp the axle, hence my leaning towards the sleeve, instead.
The metal spray sounds rather interesting and to be honest, I didn't know it existed. I'll look into that as it seems to be likely solution. The build up required on the axle is minute, so maybe this would be the way to go.
Thanks once again. I'll ponder on this some more and then decide what to do. I'll keep you posted.
With regards to the over heating event, the motor did run perfectly well for quite some time, after I replaced the broken fan, so I doubt whether the was any damage to the windings or casing. I will have it checked out though, because I intend to use this motor as a standby, should any of the other two 70kw's that I'm using, develop a problem and there's no use in having a standby which isn't 100% reliable.
I'm quite confident that I would be able to turn it down and re-sleeve it successfully. After all, it is my own motor, so should I stuff it up, it won't be the end of the world and I can always take it to the machine shop that I regularly use to rescue it. We have a very good relationship, but I can just imagine the comments I'll have to face, should I call on them to bail me out!
My initial though was to weld the axle and then turn it down, but my toolmaker friend warned me that the heat might warp the axle, hence my leaning towards the sleeve, instead.
The metal spray sounds rather interesting and to be honest, I didn't know it existed. I'll look into that as it seems to be likely solution. The build up required on the axle is minute, so maybe this would be the way to go.
Thanks once again. I'll ponder on this some more and then decide what to do. I'll keep you posted.