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NEMA 34 Stepper Motor

NEMA (National Electrical Manufacturers Association) 34 is a stepper motor with a 3.4×3.4 inch faceplate and 1.8° step angle. Each phase draws 4.0 A, allowing for a holding torque of 42 kg-cm. NEMA 34 Stepper motor is generally used in Printers, CNC machine, Linear actuators and hard drives.


Pin Configuration


    Pin Name





Wire 1



This motor has four wires terminated with bare leads: Red and Green connected to one coil; Yellow and Blue connected to other.  


Wire 2



Wire 3



wire 4



NEMA 34 Stepper Motor Specifications

  • Voltage Rating: 3.0V
  • Current Rating: 4.0 A
  • Holding Torque: 42 Kg-cm
  • Step Angle: 1.8 deg.
  • Steps Per Revolution: 200
  • No. of Phases: 2
  • Motor Length:  118 mm
  • Shaft Length : 32mm
  • No. of Leads: 4
  • Inductance Per Phase: 8.5 mH


Note: The NEMA 34 stepper motor datasheet can be found at the bottom of the page.


Other Stepper motors

Nema 14, Nema 17, Nema23 , 28BYJ-48 Stepper Motor


Other Motors

DC Motor, 12V DC motor, Servo Motor, BLDC Motor


NEMA 34 Description

NEMA 34 is a high torque hybrid bipolar stepping motor with a 3.4×3.4 inch faceplate. Hybrid stepper has the combination of the features of the Variable Reluctance Stepper Motor and Permanent Magnet Stepper Motor. This motor has a step angle of 1.8 deg., this means that it has 200 steps per revolution and for every step it will cover 1.8°.  This NEMA 34 is a 2-Phase motor with 4 wires. Compatible controllers for this motor are CW230, CW250 and CW860.


How to use NEMA 34 Stepper Motor

As mentioned above this stepper motor draws high current so instead of controlling it directly, use an appropriately powerful stepper motor drivers like cw230. Wiring diagram for NEMA 34 Stepper motor is given below:

Wiring diagram for NEMA 34


As shown in wiring diagram there are four wires of different colours i.e. Red, Green, Yellow and Blue. These wires are connected to two different coils. Red and Green connected to one coil while Yellow and Blue are connected to other.

To rotate the motor coils are energized in a logical sequence. To rotate the motor in anticlockwise motion of the rotor the phases are energized in the following sequence +A, +B, -A, -B, +B, +A and for the clockwise rotation, the sequence is +A, -B, +B, +A……..


Stepper Motor Applications

  • CNC machines
  • Precise control machines
  • 3D printer/prototyping machines (e.g. RepRap)
  • Laser cutters
  • Pick and place machines


NEMA 34 Stepper Motor Dimensions

NEMA 34 Dimensions

Component Datasheet

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