Random overheat alarm on Okuma lu15 lathe

[edirig1]

I'm getting an 4173-21 alarm-d mcs motor overheat on ta axis1. The problem is very intermittent. It will show up after 10 minutes or six hours. It can go a day or two and not show up at all. Any insight would be appreciated.
Eric

[Superman]

TA axis is usually the toolchanger or turret
How well has it been maintained ?

there may be some sort of binding ( rust, coolant, swarf, etc )
these need to be checked out before looking deeper

always work from the easiest and cheaoest, before calling for the service guys

[underthetire]

I agree with superman, check that. I have however had the same machine problem you have on a customers machine. Was coolant in the motor cables causing it.

[edirig1]

Thanks for the info!
Eric

[edirig1]

Maintenance just got done pulling the turret index motor. Seems wet with way oil. Is this normal??

[edirig1]

Motor was sent out to have windings and thermal sensor checked. The sensor is suspected to be the problem. It can be replaced which is a far cry from 3k for a new motor.