Hot stepper motor

[binfordw]

I have a X3 mill that I converted to CNC, using a kit from Keling, and the Y motor has always run hot. I have been doing some 3d cutting lately with long runtimes, and have really noticed ALOT of heat in the Y motor. The X motor runs around 100degrees, up to 120 max, but the Y has reached as high as 210.. It even stays hotter when not in use than the X by a good margin.

What causes this? are there any fixes?


Also, I posted this in general, but no responses yet. I need a Lathe chuck for a 6" rotary table, What size chuck should I buy? Will any of them fit/work well?

[arizonavideo]

I think 180 deg is max so it is a bit hot. I would lower the current setting a bit and see how it does. I have not heard of the coils going bad on a stepper yet so I would blame the driver for now.

If the stepper runs hot and drops more steps then I would think one of the driver transistors is smoked or leaking current.

You could flip the driver with the X and see if the heat follows the driver. If so it may have a problem or just the current setting is wrong. The switches don't always flip.

[TXFred]

What electronics are you using?

If it is a gecko, i would suspect that the current is not reducing while the stepper is idle. That would increase the heat load even when the axis isn't moving.

Fred

[Kelinginc]

I have a X3 mill that I converted to CNC, using a kit from Keling, and the Y motor has always run hot. I have been doing some 3d cutting lately with long runtimes, and have really noticed ALOT of heat in the Y motor. The X motor runs around 100degrees, up to 120 max, but the Y has reached as high as 210.. It even stays hotter when not in use than the X by a good margin.

What causes this? are there any fixes?


Also, I posted this in general, but no responses yet. I need a Lathe chuck for a 6" rotary table, What size chuck should I buy? Will any of them fit/work well?

Hi
what is the power supply, stepper driver you are using?
what is the current you set?
Max temp is 180F,210 is too high

http://www.kelinginc.net/

[binfordw]

Hi,

Thanks for the replies so far,

This is the kit im using- http://www.kelinginc.net/Three34XCNCPackage.html