This is the strongest Nema 23 stepper cnc motors, it with step angle 1.8deg and size 57x57x113mm. It has 4 wires, each phase draws 4.2A, with holding torque 3.0Nm(425oz.in).Different from standard 10mm shaft diameter, the shaft diameter of this motor is 8mm.

Electrical Specification

*Manufacturer Part Number: 23HS45-4204S1
*Motor Type: Bipolar Stepper
*Step Angle: 1.8deg
*Holding Torque: 3.0Nm(425oz.in)
*Rated Current/phase: 4.2A
*Phase Resistance: 0.88ohms
*Inductance: 3.4mH±20%(1KHz)

Physical Specification

*Frame Size: 57 x 57mm
*Body Length: 113mm
*Shaft Diameter: φ8mm
*Shaft Length: 24mm
*D-cut Length: 20mm
*Number of Leads: 4
*Lead Length: 400mm
*Weight: 1.668kg

Connection

*A+: Black, A-: Green, B+: Red, B-: Blue