Re: [CAD_CAM_EDM_DRO] How hot is too hot?

washcomp wrote:

>I've increased the voltage on the power supply feeding my NEMA 42
>steppers to about 67 volts DC which is well under the 25 X voltage
>limit. I've been warned that at too high a voltage the motors get
>hot enough to fry eggs (a quantitative measurement, but one thats
>hard for me to test without a pan.
>
>After about 2 1/2 hours of locked rotor testing the motor is pretty
>warm towards hot, but I can keep my hand on it without discomfort.
>
>Should I be satisfied or concerned?
>
>

That should be perfectly safe for most steppers. Some may have 85 C
limits, but many
are good to 105 C. You wouldn't be able to hold your hand on either of
these!

Jon