need a new stepper

[ouch]

I originally bought my steppers for a home made machine. they worked great on that machine but the construction job I did On the machine didn't work well. So I bought the X2 mill from harbor freight and a conversion kit. The stepper just isn't strong enough to lift that 35 pound head. I took the stepper off and it worked great. I put it back on same problem. So With my free arm I gave it a helping hand and it went up great every time. So how strong of nema 23 stepper do I need to lift that head. I thought of a counter weight system but the X wife got most of the tools in the divorce except the mill so I have nothing left to build one with. I would rather just buy a stronger stepper motor. these by the way are KL23H284-35-4BR (1/4” Dual shaft with a flat) 355 oz-in would a NEMA 23 Stepper Motor: KL23H2100-30-4BM (1/4” Dual shaft with a flat) 495 oz-in work. The main thing I will be cutting is aluminum and synthetic rifle stocks. Or will I need stronger then that say something like a 570 oz-in? witch I don't want to go up to because of cost and I would have to get a new lovejoy coupler.

[hoss2006]

Depends, what driver are you running and what voltage?
Hoss

[ouch]

the power pack is the KL-600-48 48V/12.5A and the drivers are the KL-6050 the z axis is set for 5.0 amp and half step. Sorry should have given that info in the OP. I like buying from keling inc there prices seem fair and there shipping and packing are fast and great.

[hoss2006]

Well you're putting too much current to the 355, it's a 3.5 amp motor.
Try setting the 6050 to 3.5amps.
The 355 would also like to run at 65 volts for best performance so 48 is under powering it.
The 355 should manage the x2 z unless you have gib binding.
the 570 stepper is a great match for the 6050 @ 48 volts and would have no trouble with the z
if you want to upgrade the motor, it's more than what's necessary but it'll certainly do the job.
Hoss

[ouch]

Well that sucks I emailed them and asked for advise and told them the drivers and steppers I had and they were the ones who told me to get that power supply. So will it do the job if I can find the bind?

[SCzEngrgGroup]

Running a 3.5A stepper at 5A, you've likely de-magnetized the motor, greatly reducing its torque output. Steppers should NEVER be run above their rated current, and should NEVER be take apart. Doing either can easily reduce torque by 30-50%.

Regards,
Ray L.

[hoss2006]

If running the 355 at 5 amps hasn't cooked it already.
I'd get a 381 or 570 first rather than getting a bigger power supply, they run great at 48 volts.
Yeah, make sure the head moves easily too.
Hoss