Ive looked around and keep ending back up at the manufacturers website, but with this particular stepper not listed.
Does anyone have a clue on what the specs of might be?
The numbers don't yield anything on google.
Measure the winding resistance and post that with the dimensions and if you know what it came out of that would help.
The shaft size is important so measure that as well in mm.
That is a bipolar stepper and is probably obsolete. The Minebea Corporation lists the current 17PM series as 17PM-K* here http://www.eminebea.com/en/product/rotary/steppingmotor/hybrid/standard/17pm-k.shtml
It is very important to know the resistance of the windings, so be sure to measure it.
Resistance is bouncing between 2.9 and 3.
42mm x 42mm dimensions with 5mm shaft.
I can get it to run on my easydriver, Just not really sure how much I should feed it.
Thanks for all your help guys.
To determine the maximum steady state current the motor will tolerate, run it for a long time with both windings fully energized. If you have a variable power supply capable of supplying several amperes, start at 3 volts and work up. For example at 3 volts, the current will be about 1 ampere per winding. The motor will heat up, but if after about 30 minutes to one hour, the case temperature does not go above 70 Celsius, the motor will probably be OK in the long run.
Many of these motors are designed to run safely at case temperatures too hot to touch, but if the high temperature worries you, run it at less current. As you know, the Big Easy Driver has current limiting capability but can supply at most about 1.4 amperes/winding.
42mm x 42mm dimensions with 5mm shaft.
Look at the shaft diameter and ask yourself "Why is the shaft so thick ?"
What is the most obvious conclusion one might draw by the shaft diameter ?
Would you expect the shaft diameter to have some correlation to the torque capability or load torque requirement ?
Without a datasheet I think it is safe to say there is some significance to the thicker shaft . Maybe that is a normal shaft diameter for that size stepper. I don't know but one might conclude that the motor was chosen for the application if came from because it has a thicker shaft and a higher torque capability because the shaft it was coupled to was probably also 5mm and that was no coincidence (meaning it needs that thickness for the application). A mechanical engineer could probably guess the torque rating of the motor based on the shaft thickness.
Metric NEMA 17 motors are all 5mm shaft, just like NEMA 23 motors are all 8mm shaft
(metric) or 1/4" (imperial) its not significant.