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Gear Ratio 20:1 Spur Gearbox High Torque Nema 34 Stepper Motor 34HS38-4004D-SG20

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  • Gear Ratio 20:1 Spur Gearbox High Torque Nema 34 Stepper Motor 34HS38-4004D-SG20

Gear Ratio 20:1 Spur Gearbox High Torque Nema 34 Stepper Motor 34HS38-4004D-SG20

Products item: #0148
Price:  US$ 119.86
  • 23 pcs in stock
  • Add to Cart:

    Price Break:
    Unit Price
    US$ 114.89
    4 %
    US$ 111.78
    7 %
    US$ 99.36
    17 %
    US$ 93.15
    22 %


    This is the smallest high precision NEMA 8 Stepper motor, it has an integrated Planetary gearbox with a 4.75:1 gear ratio, the resolution reach 0.38° step angle. It's a good solution in applications that need very low rotation speeds and/or lots of torque.

    Electrical Specification

    Manufacturer Part Number8HS15-0604S-PG5
    Motor TypeBipolar Stepper
    Step Angle 0.38°
    Holding Torque 17.1Ncm
    Rated Current/phase 0.6A
    Phase Resistance 10ohms
    Recommended Voltage 12V
    Inductance 5.5mH±20%(1KHz)

    Gearbox Specifications

    Gearbox Type Planetary
    Gear Ratio 4.75:1
    Efficiency 90%
    Backlash at No-load <=1°
    Max.Permissible Torque 0.5Nm(70.8oz-in)
    Moment Permissible Torque 1Nm(141.6oz-in)
    Shaft Maximum Axial Load 5N
    Shaft Maximum Radial Load 25N

    Physical Specifications

    Frame Size 22 x 22mm
    Motor Length 38mm
    Gearbox Length 20.5mm
    Shaft Diameter Φ6mm
    Shaft Length 15mm
    D-cut Length 9mm
    Number of Leads 4
    Lead Length 300mm
    Weight 120g


    Wire Color
    Board Connector

    warning Make sure the motor connect to a constant current or chopper drive controller before you test motor. Connecting the motor directly to a power supply will destroy the motor.

    Related Products

    • Stepper Motor Driver
      For each stepper motor, it should work with a stepper motor driver, below is a matched stepper motor driver:
      • MA860H: High performance stepper driver, Output current 2.6 - 7.20A, Input voltage 18 - 80VAC/24 - 110VDC, Max. step resolutions 1/256.
    • Stepper Motor Power Supply
      Recommended Driving Voltage is 24 - 60VDC.
      Power = 1.5 - 2 times of Driving Voltage x Motor Rated Current.
    • Nema 34 Spur Gearbox Mounting Bracket
      This motor mounting bracket was designed to match Nema 34 spur gearbox.

    Custom Options

    • Connectors: Molex, Harwin, Tyco/AMP, JST etc.
    • Lead wires & cables: Special lengths, Protective hose
    • Shaft: Round, D-Cut, Cross drilled, Key-Way, Thread or Hollow

    How to choose a geared stepper motor?

    • Selecting a geared stepper motor will result in increasing the output torque and decreasing the speed. Simply, the Gearbox Output Speed is:
      Geared Stepper Motor Speed
    • The gearbox output torque will depending on many factors, it can be calculated by:
      Geared Stepper Motor Torque
    • The Gearbox Step Angle can be determined by:
      Geared Stepper Motor Step Angle
    • When choosing a stepper motor with a gearbox, keep in mind that the gearbox Max Permissible Torque, beyond which the gearbox could become damaged.


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