2D code

Browse StepperOnline on Mobile

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

Press Esc key to close this popup
  • 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$ 128.28
  • 17 pcs in stock
  • Add to Cart:

    Price Break:
    Unit Price
    US$ 122.17
    5 %
    US$ 116.06
    10 %
    US$ 109.95
    14 %
    US$ 103.84
    19 %


    This high precision NEMA 34 Stepper Motor has an integrated 104mm Spur gearbox with 20:1 gear ratio, the resolution reach 0.09° step angle. It's a good solution in applications that need very low rotation speeds and/or lots of torque.

    Electrical Specification

    Manufacturer Part Number 34HS38-4004D-SG20
    Motor Type Bipolar Stepper
    Step Angle 0.09°
    Holding Torque 40Nm
    Rated Torque 40Nm
    Rated Current/phase 4.0A
    Phase Resistance 0.6ohms
    Recommended Voltage 24-60V
    Inductance 4.5mH±20%(1KHz)

    Gearbox Specifications

    Gearbox Type Spur
    Gear Ratio 20
    Efficiency 70%
    Backlash at No-load <=3°
    Max.Permissible Torque 40Nm

    Physical Specifications

    Frame Size 104 x 104mm
    Motor Length 97mm
    Gearbox Length 72mm
    Shaft Diameter Φ15mm
    Shaft Length 43mm
    Key-way length 25mm
    Key-way width 5mm
    Rear Shaft Diameter 8mm
    Rear Shaft Length 13mm
    Number of Leads 4
    Lead Length 500mm
    Weight 5.6kg


    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 24 - 80VAC/36 - 110VDC, Max. step resolutions 1/256.
    • Stepper Motor Power Supply
      Recommended Driving Voltage is 36 - 60VDC.
    • 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.


    Why StepperOnline?
    Over 10,000 Products In Stock
    Our veteran engineers selected hundreds of typical models from our sales records, and we stocked in our warehouse. More than 10,000 products are ready to ship and we promise delivery your goods in 24 Hours!
    Low Prices Direct From Factory Suppliers
    As a China-based distributor, StepperOnline has developed long lasting ties with more than 50 factories. We purchasing products with huge quantity to lower the cost as possible. Even our prices are lower than the price you get from manufacturer directly.
    Fast Delivery Around The Globe
    Partnering with internationally trusted logistic service providers such as FedEx, UPS, DHL and TNT, StepperOnline ships to over 200 countries around the world. A variety of expedited shipping methods means there is a convenient delivery option for every budget.
    High Quality With Global Standards
    Cooperate with Top 3 famous manufacturers to make sure the products are produced with high quality, and in-house QC dep., ensuring each and every item purchased meets global quality standards.
    Customer Service & Technical Support
    You will get in touch with StepperOnline through Telephone, Email and also online Live Chat, our engineer are ready to serve you!
    Flexible Customization
    Small quantity, and customized products are available, we will delivery your samples within incredible short time.