Michael Kroart
10-08-2009, 3:02 PM
Hello,
My Rockwell 46-450 lathe has resurfaced from 10 years of storage and I'm just now getting into an electrical problem that existed back then. I used the lathe for a couple months after purchase from a high school (1999) without any issues, but then it started turning off when I made heavier cuts. After a while I couldn't get it to start without a little help from my left hand. Eventually all I could get was a sharp rapping noise from the junction box located inside the stand - the noise came from what I believe to be the magnetic motor starter. When I exposed it and tried again I noticed sparks coming from the contacts in that unit.
The lathe is wired for 110/1 phase (at least that's how I've been able to use it). Other than than, I've posted pics of the major components in the hopes some one might have a theory as to what's going on and what may need to be replaced. I did remove and clean the contacts from the magnetic motor starter, but to no avail.
It was stored in a fairly damp basement over that period, and was urinated on by at least 1 cat...but I doubt the cat reached the wiring or motor.
I have now removed all wiring and components from the lathe and have them in a pile. I may drop off all the components to a motor repair shop at some point, but I'd appreciate any theories or suggestions for cost-effective repairs.
Main component specs
Motor Starter(?): Furnas, 42BD35AJ
Bimetal Overload Relay: 48DA17A, 600VAC Max, Non-Ambient Compensated
??? Brown paper/metal housing: Basler Electric, BE12120002, 24V 55VA
??? Small Yellow Coil/Contact: 10 A, 120VAC 1PH
The upside down switch near the pulleys is activated by the speed control shaft; switch is activated at 340 RPM (min speed).
Thanks for your time,
Mike
My Rockwell 46-450 lathe has resurfaced from 10 years of storage and I'm just now getting into an electrical problem that existed back then. I used the lathe for a couple months after purchase from a high school (1999) without any issues, but then it started turning off when I made heavier cuts. After a while I couldn't get it to start without a little help from my left hand. Eventually all I could get was a sharp rapping noise from the junction box located inside the stand - the noise came from what I believe to be the magnetic motor starter. When I exposed it and tried again I noticed sparks coming from the contacts in that unit.
The lathe is wired for 110/1 phase (at least that's how I've been able to use it). Other than than, I've posted pics of the major components in the hopes some one might have a theory as to what's going on and what may need to be replaced. I did remove and clean the contacts from the magnetic motor starter, but to no avail.
It was stored in a fairly damp basement over that period, and was urinated on by at least 1 cat...but I doubt the cat reached the wiring or motor.
I have now removed all wiring and components from the lathe and have them in a pile. I may drop off all the components to a motor repair shop at some point, but I'd appreciate any theories or suggestions for cost-effective repairs.
Main component specs
Motor Starter(?): Furnas, 42BD35AJ
Bimetal Overload Relay: 48DA17A, 600VAC Max, Non-Ambient Compensated
??? Brown paper/metal housing: Basler Electric, BE12120002, 24V 55VA
??? Small Yellow Coil/Contact: 10 A, 120VAC 1PH
The upside down switch near the pulleys is activated by the speed control shaft; switch is activated at 340 RPM (min speed).
Thanks for your time,
Mike