Nema 23 Stepper Motors

Nema 23 stepper motors with an installation size of 2.3 x 2.3 inch (57 x 57 mm),torque up to 12Nm always maintaining the flange in standard NEMA23. Some models are offered with two different wirings to best fit in the application. The motor shaft can be supplied with a diameter of 8mm or 6.35mm with flattening. It can be driven at the desired speed without loss step. Suitable for 3D printer, robot arm, CNC router, sewing machine, etc.

Basic Parameters

Phase: 2 Phase/ 3 Phase
Step Angle: 1.8°
Flanged Size: 86 x 86mm (Nema 34)
Shaft Diameter: 8mm/ 6.3mm
Lead Wires: 4 Wire
Step Angle Accuracy: ±5% (Full Step, No Load)
Temperature Rise: 80℃ Max. (rated current, 2 phase on)
Ambient Temperature: -20℃~+50℃

Model Selection

ModelPhaseMotor LengthRated CurrentHolding Torque
ATO-STEP-23S2502 Phase80mm3.5A450 N·cm
ATO-STEP-34M4002 Phase94mm4A600 N·cm
ATO-STEP-34L4002 Phase118mm4A850 N·cm
ATO-STEP-34C5003 Phase97mm2A400 N·cm
ATO-STEP-34C3203 Phase145mm3.2A850 N·cm
ATO-STEP-34L3003 Phase125mm3A600 N·cm
ATO-STEP-34CC6202 Phase172mm6.2A1200 N·cm
ATO-STEP-34CM6203 Phase102mm6.2A450 N·cm
ATO-STEP-34CL6202 Phase134mm6.2A820 N·cm

How to wire a Nema 23 stepper motor to a driver?

You need to figure out which wires make up the coil pairs. Here’s three ways to figure this out.

  • You can use a multimeter and measure the resistance between the wires coming from the Nema 23 stepper motor. If you have a reading, it’s a pair. If not, it’s not a pair.
  • In addition, if you don’t have a multimeter, turn the motor while touching the wires. Whichever combination makes it difficult to move the motor, it’s a pair.
  • Of course, it’s not practical to sort out all possible combinations of connections with an ohmmeter or by feel. It is still easiest to connect the motor according to its datasheet. Assuming you don’t already have one, then read the model number off the motor and search online. You may need to contact the supplier to get the data sheet for the stepper motor.

The following diagram shows several different winding arrangements:

Nema 23 stepper motor wiring connection diagram
Nema 23 stepper motor wiring connection diagram