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

PHIDGETS Inc.

Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9
Canada
+1 403 282-7335

NEMA23 - 1.8 Degree - 2.8A Stepper - 77:1 Gearbox

ID: 3334_0

This powerful bipolar stepper with a rear shaft and a gearbox has a 0.023° step angle and 240 kg·cm of torque at low speeds.

$74.00

Quantity Available: 259

Qty Price
5 $71.04
10 $68.08
25 $66.60
50 $65.12
100 $63.64
50+...

This NEMA-23 motor has an integrated Planetary gearbox with a 76 49/64:1 ratio. It comes with the rear shaft exposed, so you can mount an encoder or shaft coupler.

At the output of the gearbox, the step angle approximately 0.023°. When using the step angle in calculations, you should derive the exact step angle by dividing 1.8° by the gearbox reduction ratio.

At 2.8 Amps, this stepper motor can produce a maximum torque of 960 kg-cm. However, the gearbox is only rated for 240 kg-cm of continuous torque. Loading this gearbox stepper beyond the torque rating of the gearbox will shorten its useful life.

Note: Connecting the motor directly to a power supply will destroy the motor and void the warranty. It must be used with a constant current / chopper drive controller such as a Phidget stepper controller.

Features

  • 240 kg-cm torque rating
  • 1.8 degree step angle (0.023 degrees after gearbox)
  • 77:1 planetary gearbox
  • Rated for 2.8A of current
  • Connects to a Phidgets stepper controller

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.

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 3330STC10011067
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
STC1005_0
4A Stepper Phidget
$40.00 116 Step (40-Bit Signed) 1 116 steps/sec 115000 116 steps/sec 4 A
STC1002_0
8A Stepper Phidget
$80.00 116 Step (40-Bit Signed) 1 116 steps/sec 115000 116 steps/sec 8 A
1067_0B
PhidgetStepper Bipolar HC
$90.00 116 Step (40-Bit Signed) 1 116 steps/sec 250000 116 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
TRM4317_0
Jaw Coupling Half 12mm Series 12
$3.60 12 mm Aluminum 35.7 kg·cm 12000 RPM
TRM4318_0
Jaw Coupling Half 12mm Series 24
$6.85 12 mm Aluminum 611.8 kg·cm 4000 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 12mm bore pulleys and sprockets:

Product Physical Properties
Part Number Price Inner Diameter Number of Teeth
TRM4139_0
#25 Chain Sprocket with 12mm Bore and 12 Teeth
$3.25 12 mm 10
TRM4140_0
#25 Chain Sprocket with 12mm Bore and 18 Teeth
$3.75 12 mm 18
TRM4141_0
#25 Chain Sprocket with 12mm Bore and 32 Teeth
$5.00 12 mm 32
TRM4142_0
#25 Chain Sprocket with 12mm Bore and 52 Teeth
$8.00 12 mm 52
TRM4107_0
GT2 Pulley with 12mm Bore and 36 Teeth
$3.00 12 mm 36
TRM4108_0
GT2 Pulley with 12mm Bore and 44 Teeth
$3.00 12 mm 44
TRM4109_0
GT2 Pulley with 12mm Bore and 60 Teeth
$3.55 12 mm 60
TRM4110_0
GT2 Pulley with 12mm Bore and 80 Teeth
$4.45 12 mm 80
TRM4144_0
#40 Chain Sprocket with 12mm Bore and 9 Teeth
$4.25 12 mm 9
TRM4145_0
#40 Chain Sprocket with 12mm Bore and 14 Teeth
$4.50 12 mm 14
TRM4146_0
#40 Chain Sprocket with 12mm Bore and 20 Teeth
$7.00 12 mm 20
TRM4120_0
GT5 Pulley with 12mm Bore and 16 Teeth
$3.50 12 mm 16
TRM4121_0
GT5 Pulley with 12mm Bore and 24 Teeth
$4.00 12 mm 24
TRM4122_0
GT5 Pulley with 12mm Bore and 34 Teeth
$5.00 12 mm 34
TRM4123_0
GT5 Pulley with 12mm Bore and 50 Teeth
$7.40 12 mm 50
TRM4124_0
GT5 Pulley with 12mm Bore and 72 Teeth
$12.95 12 mm 72

Rotary Bearings

Systems with heavy loads or pulley/sprocket assemblies often put a lot of sideways strain on the motor shaft. If you're using this motor to drive such a system, you can use rotary bearings to protect the motor:

Product Physical Properties Mechanical Properties
Part Number Price Inner Diameter Bearing Type Static Load Dynamic Load
TRM4502_0
Flanged Rotary Bearing for 12mm Shaft
$4.00 12 mm Rotary Shaft (Flanged) 2.4 kN 5.1 kN
TRM4503_0
Pillow Block Rotary Bearing for 12mm Shaft
$4.00 12 mm Rotary Shaft (Pillow Block) 2.4 kN 5.1 kN

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 / 56JXS300K77
Step Angle 0.023°
Step Accuracy ± 5 %
Holding Torque 240 kg·cm
Rated Torque 240 kg·cm
Maximum Motor Speed 10 RPM
Electrical Properties
Recommended Voltage 24 V DC
Rated Current 2.8 A
Coil Resistance 900 mΩ
Phase Inductance 2.5 mH
Physical Properties
Shaft Diameter 12 mm
Keyway Width 4 mm
Rear Shaft Diameter 3.9 mm
Mounting Plate Size NEMA - 23
Weight 1.5 kg
Number of Leads 4
Wire Length 300 mm
Gearbox Properties
Gearbox Type Planetary
Gear Ratio 76 4964 : 1
Backlash Error 1 12°
Maximum Strength of Gears 240 kg·cm
Shaft Maximum Axial Load 100 N
Shaft Maximum Radial Load 250 N
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
3321_1
NEMA11 - 1.8 Degree - 1.5A Stepper - 27:1 Gearbox
$38.00 0.067° 14 kg·cm 50 RPM 24 V DC 6 mm 217.5 g 26 103121 : 1
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
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
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
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