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Calgary AB  T2H 2H9
Canada

NEMA23 - 1.8 Degree - 2.8A Stepper - Gearless

ID: 3331_0

This high-speed bipolar stepper with a rear shaft has a 1.8° step angle and 11 kg·cm of torque at low speeds.

Discontinued

The nearest replacement for this motor is the 3330_0, the same size and shape with a 0.9° step angle instead of 1.8°.

This NEMA-23 motor generates 12.6 kg-cm of holding torque at 2.8 Amps. It comes with the rear shaft exposed, so you can mount an encoder or shaft coupler. See the Connection & Compatibility tab for a complete list of attachments.

Connection

This motor must be controlled by a constant current or chopper drive controller. You can find a list of suitable controllers on the Connection & Compatibility tab. There you will also find compatible attachments such as encoders, mounting hardware, and transmission hardware.

Warning

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.

Motor Controllers

This motor must be controlled by a stepper motor controller. This diagram shows how to connect the motor wires to the controller 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.

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

Function 3331STC10011067
A Black A A
Green A- B
B Red B C
Blue B- D
Functional Functional

The following stepper controllers can be used to drive this motor:

Product Controller Properties Electrical Properties
Part Number Price Motor Position Resolution Stepper Velocity Resolution Stepper Velocity Max Available Current per Coil Max
1067_0B
PhidgetStepper Bipolar HC
$90.00 116 Step (40-Bit Signed) 1 1/16 steps/sec 250000 1/16 steps/sec 4 A
STC1002_0
8A Stepper Phidget
$80.00 116 Step (40-Bit Signed) 1 1/16 steps/sec 115000 1/16 steps/sec 8 A
STC1005_0
4A Stepper Phidget
$40.00 1/16 Step (40-Bit Signed) 1 1/16 steps/sec 115000 1/16 steps/sec 4 A

Encoders

The rear shaft of this motor can be equipped with an encoder for applications where you need to keep track of the exact position, velocity, or acceleration of the motor. The mounting holes on the back of this motor are compatible with the following encoders:

Product Encoder Properties
Part Number Price Output Circuit Type Encoder Resolution Encoder Speed Max
3531_0
Rotary Encoder - For 4mm Motor Shaft 300 CPR
$25.00 Push-Pull 300 CPR 6000 RPM
ENC4109_0
Rotary Encoder - For 4mm Motor Shaft 40 CPR
$10.00 Push-Pull 40 CPR 6000 RPM

Shaft Couplers

If you need to connect the main shaft of this motor to the shaft of another device, you can use a shaft coupler:

Product Physical Properties
Part Number Price Inner Diameter Material Coupling Rated Torque Coupling Rated Speed Torsional Stiffness
TRM4312_0
Jaw Coupling Half 0.25" Series 12
$2.80 14 Aluminum 35.7 kg·cm 12000 RPM

Pulleys and Sprockets

If you're using this motor to drive a rotary system that requires a lot of torque, you may be interested in pulleys and sprockets. By using a two pulleys or sprockets of different sizes, you can increase the gear ratio of the motor. Pulleys and sprockets can also be used to transmit the motor's rotation over a long distance. For more guidance on building a transmission system, visit our Rotary Motion Guide. Here is a list of our 1/4" bore pulleys and sprockets:

Product Physical Properties
Part Number Price Inner Diameter Number of Teeth
TRM4101_0
GT2 Pulley with 0.25" Bore and 22 Teeth
$3.00 14 22
TRM4165_0
GT5 Pulley with 0.25" Bore and 12 Teeth
$2.75 14 12

Mounting Brackets

Mounting this motor to a flat surface is easy with these metal mounting brackets. The holes on the bracket match those on the back of the motor, as well as the ones on the front of the gearbox. The following brackets will fit the mounting holes on this motor:

Product Physical Properties
Part Number Price Mounting Plate Size Material
3339_0
Motor Mounting Bracket (NEMA 23)
$4.00 NEMA - 23 Mild Steel (Coated)

Product Specifications

Motor Properties
Motor Type Bipolar Stepper
Manufacturer Part Number 57STH56-2804B
Step Angle 1.8°
Step Accuracy ± 5 %
Holding Torque 12.6 kg·cm
Rated Torque 11 kg·cm
Maximum Motor Speed 2150 RPM
Electrical Properties
Recommended Voltage 12 V DC
Rated Current 2.8 A
Coil Resistance 900 mΩ
Phase Inductance 2.5 mH
Physical Properties
Shaft Diameter 14
Rear Shaft Diameter 3.9 mm
Mounting Plate Size NEMA - 23
Weight 686 g
Number of Leads 4
Wire Length 300 mm
Customs Information
Canadian HS Export Code 8501.10.00
American HTS Import Code 8501.10.40.40
Country of Origin CN (China)

Documents

Here's a list of our bipolar stepper motors:

Product Motor Properties Electrical Properties Physical Properties Gearbox Properties
Part Number Price Step Angle Rated Torque Maximum Motor Speed Recommended Voltage Shaft Diameter Weight Gear Ratio
3320_0
NEMA11 - 1.8 Degree - 0.67A Stepper - Gearless
$16.00 1.8° 520 g·cm 1300 RPM 24 V DC 5 mm 111.4 g
3321_0
NEMA11 - 1.8 Degree - 0.67A Stepper - 27:1 Gearbox
$36.00 0.067° 14 kg·cm 50 RPM 24 V DC 6 mm 217.5 g 26 103121 : 1
3322_0
NEMA11 - 1.8 Degree - 0.67A Stepper - 100:1 Gearbox
$38.00 0.018° 32 kg·cm 13 RPM 24 V DC 6 mm 243.6 g 99 10442057 : 1
3323_0
NEMA14 - 1.8 Degree - 1A Stepper - Gearless
$16.00 1.8° 1.2 kg·cm 1000 RPM 24 V DC 5 mm 200 g
3324_0
NEMA17 - 1.8 Degree - 1.68A Stepper - Gearless
$16.00 1.8° 3.3 kg·cm 1000 RPM 24 V DC 5 mm 289 g
3325_0
NEMA17 - 1.8 Degree - 1.68A Stepper - 5.18:1 Gearbox
$40.00 0.35° 18 kg·cm 200 RPM 24 V DC 8 mm 457 g 5 211 : 1
3326_0
NEMA17 - 1.8 Degree - 1.68A Stepper - 14:1 Gearbox
$42.00 0.13° 30 kg·cm 70 RPM 24 V DC 8 mm 502 g 13 212289 : 1
3327_0
NEMA17 - 1.8 Degree - 1.68A Stepper - 27:1 Gearbox
$44.00 0.067° 30 kg·cm 40 RPM 24 V DC 8 mm 503 g 26 103121 : 1
3328_0
NEMA17 - 1.8 Degree - 1.68A Stepper - 51:1 Gearbox
$46.00 0.035° 48 kg·cm 20 RPM 24 V DC 8 mm 564 g 50 43974913 : 1
3329_0
NEMA17 - 1.8 Degree - 1.68A Stepper - 100:1 Gearbox
$48.00 0.018° 48 kg·cm 10 RPM 24 V DC 8 mm 564 g 99 10442057 : 1
3330_0
NEMA23 - 0.9 Degree - 2.8A Stepper - Gearless
$28.00 0.9° 11.2 kg·cm 500 RPM 24 V DC 14 695 g
3332_0
NEMA23 - 1.8 Degree - 2.8A Stepper - 4.25:1 Gearbox
$70.00 0.42° 46.6 kg·cm 165 RPM 24 V DC 12 mm 1.2 kg 4 14 : 1
3333_0
NEMA23 - 1.8 Degree - 2.8A Stepper - 15:1 Gearbox
$72.00 0.12° 150 kg·cm 50 RPM 24 V DC 12 mm 1.3 kg 15 310 : 1
3334_0
NEMA23 - 1.8 Degree - 2.8A Stepper - 77:1 Gearbox
$74.00 0.023° 240 kg·cm 10 RPM 24 V DC 12 mm 1.5 kg 76 4964 : 1
3335_0
NEMA34 - 1.8 Degree - 4A Stepper - Gearless
$60.00 1.8° 30 kg·cm 200 RPM 30 V DC 12 mm 1.8 kg
3340_0
NEMA17 - 0.9 Degree - 1.68A Stepper - Gearless
$20.00 0.9° 3.3 kg·cm 400 RPM 24 V DC 5 mm 288 g