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Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9

57BYG630-07AG20 NEMA-23 Bipolar 20:1 Gearbox Stepper

ID: 3310_0

This powerful bipolar stepper has a 1.8° step angle and 30 kg·cm of torque at low speeds.


Replaced by the 3318 - 42BYGH40(M)-160-4A NEMA 17 Bipolar 26:1 Planetary Gearbox Stepper.

If you need lots of torque, this is the motor for you. This NEMA-23 motor has an integrated gearbox with a 20:1 ratio. At 2.8 Amps (maximum current), this gearbox stepper can develop a maximum torque of 385 kg-cm. The gearbox itself is rated for 50 kg-cm torque, 100 kg-cm for brief overloads. Loading this gearbox stepper beyond the torque rating of the gearbox will shorten its useful life.

Product Specifications

Motor Properties
Motor Type Bipolar Stepper
Manufacturer Part Number 57BYG630-AG20
Step Angle 0.09°
Step Accuracy 5 %
Holding Torque 30 kg·cm
Rated Torque 30 kg·cm
Electrical Properties
Recommended Voltage 12 V DC
Rated Current 2.8 A
Phase Inductance 5 mH
Physical Properties
Shaft Diameter 8 mm
Mounting Plate Size NEMA - 23
Weight 1.3 kg
Number of Leads 4
Wire Length 300 mm
Gearbox Properties
Gearbox Type Spur
Gear Ratio 20 : 1
Customs Information
Canadian HS Export Code 8501.10.00
American HTS Import Code 8501.10.40.60
Country of Origin CN (China)

The 3310 stepper motor connects to the 1063 - PhidgetStepper Bipolar 1-Motor.

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.