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US$22.13

This tiny stepper with a rear shaft has a 1.8¢X step angle and 520 g¡Pcm of torque at low speeds.

28STH32 NEMA-11 Bipolar Gearless Stepper Motor

This tiny stepper with a rear shaft has a 1.8° step angle and 520 g·cm of torque at low speeds.

Description
Specifications
Resources
Connection


	This NEMA-11 motor generates 600 g-cm of holding torque at 0.67 Amps. It comes with the rear shaft exposed, so you can mount an encoder or shaft coupler . When connected to a 1067 - PhidgetStepper Bipolar HC, the 3320 has a maximum speed of approximately 426 RPM.

Motor Properties

Motor Type	Bipolar Stepper
Manufacturer Part Number	28STH32-0674B
Step Angle	±1.8°
Step Accuracy	5 %
Holding Torque	600 g·cm
Rated Torque	520 g·cm
Maximum Speed (w/1067 Motor Controller)	426 RPM
Acceleration at Max Speed (w/1067 Motor Controller)	2.2E+06 ¹/₁₆steps/sec²

Electrical Properties

Recommended Voltage	12 V DC
Rated Current	670 mA
Coil Resistance	5.6 Ohm

Physical Properties

Shaft Diameter	5 mm
Rear Shaft Diameter	3.9 mm
Mounting Plate Size	NEMA - 11
Weight	111.4 g
Number of Leads	4
Wire Length	300 mm


	Stepper Motor and Controller Primer Mechanical Drawings

The 3320 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.

The rear shaft of this motor can be equipped with the HKT22 Optical Encoder for applications where you need to keep track of the exact position, velocity, or acceleration of the motor.

Mounting Bracket
The mounting holes on this motor are compatible with the 3337 - Mounting Bracket (NEMA11).

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.