I just think you need different motors since the ones you have are 160 in oz motors. Have a look at the motors on Kelings site
and you will find some 360 to 500 in oz that can be run at 3 amps and should be able to almost triple your speed.
Review the motor curves to compare if they list a curve for the motor.
RICH
I had a feeling all along these motors were my problem. I've been to their website and found the biggest 8-wire NEMA 23 stepper motor:
2: NEMA 23 BIPOLAR STEPPER MOTOR 425 oz-in
KL23H286-20-8B (1/4” shaft with a flat) Specification or Specification Price: $49
425 oz In. Hybrid Motor
1.8° /200 Steps Per Rev.
2.8 Amps Current Per Phase ( Bipolar Parallel)
8-wire Bi-polar or unipolar, NEMA 23 Frame
Compared to the ones I have now:
5: NEMA 23 BIPOLAR STEPPER MOTOR 156 oz-in KL23H251-24-8B ( ¼” dual shaft with a flat) $26.95
Specification , Torque-Speed-Curve
156 oz In. Hybrid Motor
1.8° /200 Steps Per Rev.
3.4 Amps Current Per Phase ( Bipolar Parallel)
8-wire Bi-polar or unipolar, NEMA 23 Frame
Do you think the bigger motor listed above would be enough to make the machine as fast as I need it(150-200 in/min)?
Thanks for the help,
Mike