Shaft Nema 23 Stepper Motor - 262 oz/inShaft Size 1/4 Inch.
200 Steps per revolution - 1.8 Degree Steps
Rated Voltage 3.2
Current / Phase 2.8
Resistance / Phase .1.3
Inductance / Phase 3.6
Holding Torque Oz-In 262
Holding Torque KG-cm 18.9
Qty Wires: 4
Rotor Inertia: 480 g-cm2
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: 0.02Max.(450 g-load)
Shaft Axial Play: 0.08Max.(450 g-load)
Max. radial force: 75N (20mm from flange)
Max. Axial force :15N
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 and DRV8825/DRV8818 chipset.
These are not powerful enough, you can get away with the DRV8818/8825 drivers but certainly not the A4988
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 for all steppers- but the ones we stock will remain the same until otherwise noted:
Green and Black is one pair, Red and Blue the other!