[Evodyne]

Hello everyone.

Here are some motor specs from our benefactor:

Astrosyn-Minebea Stepper Motors
Model: 23LM-701-01
Step Angle: 1.8 Degree
Drive sequence: Unipolar (6 wire) (can be wired bipolar too)
Rated voltage: 5.2V
Rated current: 1.4A (1A as bipolars)
Winding resistance: 4.2 Ohms
Holding torque: 100 oz-in
Weight: 2lbs each
Frame: Nema 23 - Double Stack

My small router goes up to 40IPM @40v with good drivers and those motors.

NOTES:

The shafts have spiral tooth gear and will require a 15/64 coupling instead of the standard 1/4" (see picture).

If you wire those as serial bipolars, you would get up to about 140 oz-in of holding torque but trade off some speed. They can also be ran as half-winding for 100oz-in of torque at double the speeds of serial bipolar connection.

Z Motor:

The motor supplied for the Z is a Brother 8 wire stepper with 4 Ohm resistance per coil. This should be way below 1.5A and can be wire serial or parallel bipolar. The lack of spec is kind of compensated by the flexibility the 8 wires bring. I expect a good 80-85 oz-in of this one. For a Z with higher TPI (5/16-18 or 3/16-20), it's perfect. I used to run a motor half this size and still get 14 IPM on Z.

Please see the attached picture-Evodyne