[Toinvd]

I am afraid you already gave the answer. 130 degrees is to much Look in the specs of your motors. These modern magnets are very strong, but don't like temperatures above 80 degrees.
Replace the motor and check the temperature to see if you run on a to high current

[defMondo]

I am afraid you already gave the answer. 130 degrees is to much Look in the specs of your motors. These modern magnets are very strong, but don't like temperatures above 80 degrees.
Replace the motor and check the temperature to see if you run on a to high current

Thanks. Will look at this, there doesn't seem to be a lot of stock in Australia when I last looked.

Stepper motors are designed to be ran at the plate rated current all times, not less, not more.
Although a modern drive operates at a much higher voltage than the plate rated value, the drive should monitor the current and provide exactly the rated current at all times.
Usually via a PWM method.
Yours appears to be operating too high.

Will have a look, I think I'm running the steppers with a 2.5A setting resistor on the Gecko drives which might be an issue if I need to run it at 3.0A on the sticker (assuming thats a real spec)

If you use G540, it is better to use this motor, it is rated at 3.5A

https://www.automationtechnologiesin...flat-381-oz-in

I'll have a look, shipping to Australia might be an issue though.

Thanks for the responses.

Sorry I didn't notice any notifications of responses and sadly life got in the way until recently.

Tony

[Al_The_Man]

Will have a look, I think I'm running the steppers with a 2.5A setting resistor on the Gecko drives which might be an issue if I need to run it at 3.0A on the sticker (assuming thats a real spec)

Tony

According to the spec sheet they are rated for 3a, this should mean 3 Amps Continuous.
Running at 2.5, will run them under spec, which should pose no problems, Over 3A (overheating) is in the danger zone.
If you are cooking it, it indicates excess (>3A) current.