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SKU 193330

3330 - 57STH56 NEMA 23 Bipolar Precision Gearless Stepper

Prezzo originale €43,63 - Prezzo originale €43,63
Prezzo originale
€43,63 - €43,63
Prezzo attuale €43,63

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This NEMA-23 motor generates 12 kg-cm of torque at 2.8 Amps. It comes with the rear shaft exposed, so you can mount an encoder or shaft coupler.

This motor is particulary suited for precision applications due to its 0.9° step angle.

When connected to a 1067 - PhidgetStepper Bipolar HC, the 3330 has a maximum speed of approximately 2250 RPM.


Motor Controller and Connection

The 3330 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.


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.



Product Features

  • High Precision, Good Speed
  • 0.9° Step Angle
  • Motor can produce 12 kg-cm holding torque @ 2.8A
  • NEMA-23 Bipolar 4-wire
  • Rear shaft exposed for compatibility with encoders

Motor Properties

Motor Type Bipolar Stepper
Manufacturer Part Number 57STH56-2804MB
Step Angle 0.9°
Step Accuracy 5 %
Holding Torque 12 kg·cm
Rated Torque 11.2 kg·cm
Maximum Speed (w/1063 Motor Controller) 208 RPM
Maximum Speed (w/1067 Motor Controller) 2250 RPM
Acceleration at Max Speed 
(w/1067 Motor Controller)
800000 1/16 steps/sec²


Electrical Properties

Recommended Voltage 12 V DC
Rated Current 2.8 A
Coil Resistance 900 mΩ


Physical Properties

Shaft Diameter 14
Rear Shaft Diameter 3.9 mm
Mounting Plate Size NEMA - 23
Weight 695 g
Number of Leads 4
Wire Length 300 mm