Z-axis...what size stepper ? - CNCzone.com-The Largest Machinist Community on the net!

dmoore3008 · #1 05-08-2003, 07:57 PM

I am building a 5' by 9' cnc router and have plans to use it on wood and some composites- My question is, what torque does the z-axis stepper have to be? It seems that is doesn't need alot of torque, as compared to the other axis.... all it does is move the router up and down...am I wrong to assume it needs less power and torque to do this ? - I am eyeing a bipolar stepper motor of 180 oz-in for the job....
HELP!

balsaman · #2 05-08-2003, 08:13 PM

That will be fine. The weight of the router can be offset with a spring if need be. Even if it's slow, it only travels a couple of inches typically.

Eric

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