42STH38 NEMA-17 Bipolar Precision Gearless Stepper

42STH38 NEMA-17 Bipolar Precision Gearless Stepper

Manufacturer :

PN 3340_0 Category

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This precision bipolar stepper with rear shaft has a 0.9?° step angle and 3.3 kg?·cm of torque at low speeds.

190.00

99999 in stock

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Warranty: 12 months

Delivery time: up to 10 business days
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This NEMA-17 motor generates 3.6 Kg-cm of holding torque at 1.7 Amps. It comes with the rear shaft exposed, so you can mount an encoder or shaft coupler. See the hardware section for a list of compatible accessories.

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

When connected to a 1067 – PhidgetStepper Bipolar HC, the 3340 has a maximum speed of 2344 RPM.

Connection

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 BlackGreenRedBlue
Board Connector ABCD

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 an encoder for applications where you need to keep track of the exact position, velocity, or acceleration of the motor. See the hardware section for a list of compatible devices.

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.

Product Specifications

Motor Properties
Motor TypeBipolar Stepper
Manufacturer Part Number42STH38-1684MB-12
Step Angle0.9?°
Step Accuracy?± 5 %
Holding Torque3.6 kg?·cm
Rated Torque3.3 kg?·cm
Maximum Speed (w/1067 Motor Controller)2344 RPM
Acceleration at Max Speed
(w/1067 Motor Controller)
1E+06 1/16 steps/sec?²
Electrical Properties
Recommended Voltage12 V DC
Rated Current1.7 A
Coil Resistance1.7 ?©
Phase Inductance4.1 mH
Physical Properties
Shaft Diameter5 mm
Rear Shaft Diameter3.9 mm
Mounting Plate SizeNEMA – 17
Weight288 g
Number of Leads4
Wire Length300 mm

Documents

  • Stepper Motor and Controller Primer
  • Mechanical Drawings

Projects

  • Motor Music: Play MIDI Files using Phidget Stepper Motors (June 1, 2015)
  • How To Avoid Resonance Issues in Stepper Motors (July 28, 2014)
  • Steppers with Encoders: When Open-loop Control Is Not Enough (May 13, 2014)

This stepper motor can be used with the following motor controllers:

ProductController PropertiesElectrical Properties
Part NumberMotor Position ResolutionStepper Velocity ResolutionStepper Velocity MaxAvailable Current per Coil Max
1067_0B116 Step (40-Bit Signed) 1 1/16 steps/sec 250000 1/16 steps/sec 4 A
STC1000_0116 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:

ProductEncoder Properties
Part NumberOutput Circuit TypeEncoder ResolutionEncoder Speed Max
3531_0Push-Pull (Single-Ended) 300 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:

ProductPhysical Properties
Part NumberInner DiameterMaterialCoupling Rated TorqueCoupling Rated SpeedTorsional Stiffness
3421_0 5 mmAluminium 4.1 kg?·cm 10000 RPM 100 N?·m/rad
3425_0 5 mmAluminium 60.7 kg?·cm 16000 RPM 63 N?·m/rad
TRM4311_0 5 mmAluminum 35.7 kg?·cm 12000 RPM?€”
TRM4333_0 5 mmAluminium 10 kg?·cm 8000 RPM 110 N?·m/rad

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 Primer. Here is a list of our 5mm bore pulleys and sprockets:

ProductPhysical Properties
Part NumberInner DiameterNumber of Teeth
TRM4100_0 5 mm16

 

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All the reasons to
purchase from us

  • Professional customer service
  • Attractive prices
  • Fast delivery times!

  • Warranty: 12 months
  • Delivery time: up to 10 business days