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
| Model | Phase | Motor Length | Rated Current | Holding Torque |
| ATO-STEP-23S250 | 2 Phase | 80mm | 3.5A | 450 N·cm |
| ATO-STEP-34M400 | 2 Phase | 94mm | 4A | 600 N·cm |
| ATO-STEP-34L400 | 2 Phase | 118mm | 4A | 850 N·cm |
| ATO-STEP-34C500 | 3 Phase | 97mm | 2A | 400 N·cm |
| ATO-STEP-34C320 | 3 Phase | 145mm | 3.2A | 850 N·cm |
| ATO-STEP-34L300 | 3 Phase | 125mm | 3A | 600 N·cm |
| ATO-STEP-34CC620 | 2 Phase | 172mm | 6.2A | 1200 N·cm |
| ATO-STEP-34CM620 | 3 Phase | 102mm | 6.2A | 450 N·cm |
| ATO-STEP-34CL620 | 2 Phase | 134mm | 6.2A | 820 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:
