Dual Shaft Nema 23 Stepper Motor - 140 oz/in
Shaft Size 1/4 Inch.
200 Steps per revolution - 1.8 Degree Steps
Rated Voltage 2.3
Current / Phase 2.8
Resistance / Phase .83
Inductance / Phase 2.2
Holding Torque Oz-In 140
Holding Torque g-cm 10100 (10.1kg)
Qty Wires 4
Rotor Inertia 275 g-cm2
Weight .65 g
Step Angle Accuracy ±5%（full step,no load
Resistance Accuracy ±10%
Inductance Accuracy ±20%
Temperature Rise 80℃Max.(rated current,2 phase on)
Ambient Temperature -10℃-+50℃
Insulation Resistance 100MΩMin.500VDC
Dielectric Strength 500VAC for one minute
Shaft Radial Play 0.06Max.(450 g-load)
Shaft Axial Play 0.08Max.(450 g-load)
You will need to use a bipolar driver with these, most print and CNC platforms are using Arduino derivative boards to run stepper drivers based around a A4988 chipset.
These are not powerful enough to get all from these motors, hold on tight for a new larger stepper driver to be stocked soon. To power this Nema 23, a great & cheap driver is the DRV8815 based driver
There are other drivers around cheap on eBay, stay away from tb6560 based drivers, better luck is had with tb6600 based drivers. Note : The drivers chips used on those cheapies are made by Toshiba, the chip its self is fantastic as you would expect, its the sub par implementation of a great chip on the cheapie boards that causes the trouble.
There doesn't seem to be a standard - but the ones we stock will remain the same until otherwise noted:
Green and Black is one pair, Red and Blue the other!