Nema23 closed-loop Stepper + Driver combo (3Nm)

 
If you are looking for ultimate precison and accuracy then closed looped steppers are likely the best option.
 
Each closed-loop stepper motor features a built-in encoder that records the number of steps taken and reports that number back to the driver which compares the number performed versus the number it told the stepper to do. If there is a discprepancy the driver will throw a fault code which can be reported back to a controller to process as it needs to.

The motors and drivers are paired accordingly to ensure everything works as expected.

Features/Specifications
Step angle: 1.8° 
Phases: 2
Hold torque: 3NM
Motor Length: 132mm
Rated Speed: 1000rpm
Encoder: 1000line
Resistance: 0.78ohm
Inductance: 3.6mH
Class of insulation: B
Driver type: HBS57H
Operating voltage: 24-80VDC
 
Wire colours
Blue: A+
Yellow: A-
Red: B+
Green: B-
 
Includes 3m encoder cable!