Products for USB Sensing and Control
Products for USB Sensing and Control

NEMA-23 Bipolar 50mm Stepper

ID: 3308_0

This precise bipolar stepper has a 0.9° step angle and 9 kg·cm of torque at low speeds.


Replaced by the 3330_0, a similarly sized motor with higher torque.

This NEMA-23 stepper motor that has fine resolution and high torque.

Product Specifications

Motor Properties
Motor Type Bipolar Stepper
Manufacturer Part Number 57BYGHM201
Step Angle 0.9°
Step Accuracy 5 %
Holding Torque 9 kg·cm
Rated Torque 8.5 kg·cm
Maximum Speed (w/1063 Motor Controller) 300 RPM
Maximum Motor Speed 2344 RPM
Acceleration at Max Speed
(w/1067 Motor Controller)
1E+06 1/16 steps/sec²
Electrical Properties
Recommended Voltage 24 V DC
Rated Current 1.7 A
Coil Resistance 4 Ω
Phase Inductance 14 mH
Physical Properties
Shaft Diameter 14
Mounting Plate Size NEMA - 23
Weight 580 g
Number of Leads 4
Wire Length 300 mm
Customs Information
Canadian HS Export Code 8501.10.00
American HTS Import Code 8501.10.40.60
Country of Origin CN (China)

The 3308 stepper motor connects to a bipolar motor controller such as the 1067 - PhidgetStepper Bipolar HC.

The following table shows how to connect the motor wires to the board connectors to produce a clockwise rotation in the stepper motor when increasing position. To wire for counter-clockwise rotation when increasing position, reverse the red and blue wires.

Wire Color Black Green Red Blue
Board Connector A B C D

Note: Make sure to unplug the power cord from the motor controller before switching wires around.


warning Connecting the motor directly to a power supply will destroy the motor and void the warranty. If you want to check your motor make sure it is connected to a constant current / chopper drive controller.