[phantomcow2]

Assuming you had a 23 frame motor with high input voltage. And, you had a high quality driver like Gecko. What would be the maximum RPM that this motor could practicly handle? Could it handle 1000?
ALso, assuming it is an 8 wire unipolar wired in parallel mode.

[ger21]

I think my powermax motors say 1500RPM on them. A guy on the Mach3 Yahoo group using a G-Rex is spinning one at 3000 rpm. It's a 7.5V, 2.5A 311oz stepper using only 30V. I have no idea what rpm it becomes unuseable, though.

[H500]

5000 rpm no load, full stepping, should be easy.

[ViperTX]

It really depends on the load......look at the torque curves for the stepper in question.

[phantomcow2]

Wow, these spin faster than I thought. I know the bearings should not be a problem, being the small diameter that they are.
I'm just looking for some very general estimations is all so I can decide what kind of ratio I want for this.

Thanks

[ViperTX]

I would direct couple a stepper.....and without looking at the torque curves...you'll have to experiment if you want to use pullies and belts....

[phantomcow2]

Well my router is all setup for belts and pullies, plus I have already got actuators all setup. This is the complete assembly, a duplex for each side and all.
I just need to figure out the pully and belts.

THe best I got for Torque curves was on the LIN Engineering site:
http://www.linengineering.com//site/...18.html#Wiring

My motor is not directly listed there though. The # I have is 5718L-95DE-02
The 5718L is there, but you see the torque curves are quite different for the various L motors. These were a custom build for a company, so it would not be listed. All i know besides that is this motor has a excellent torque (I have run it before, it is the strongest 23 frame I have felt in holding torque), and is 8 wire.