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Worm Gear Motors

High Torque in Small Packages
  • MOT-I-81556-106-worm-gear-motor

    MOT-I-81556-106 - 59mm Worm Gear Motor

  • MOT-I-81557-102-worm-gear-motor

    MOT-I-81557-102 - 59mm Worm Gear Motor

  • 24V DC High Torque Worm Gear Motor

    63mm Worm Gear Motor

  • 24VDC Worm Gear Motor

    63mm Worm Gear Motor

  • 24V DC 63mm Worm Gear Motor

    63mm Worm Gear Motor

ISL Products’ Worm Gear Motors are designed to generate high torque in a small package size. Worm Gear Motors consist of a worm gearbox coupled with a dc motor. They offer many benefits, including high torque transmission, compact design, and self-locking ability. Additionally, worm gearheads can transfer motion in 90 degrees. With various reduction ratios, precision cut gears, voltages and sizes, ISL Products has a DC Worm Gear Motor solution for your application.

Here at ISL Products, many would classify our product offering as micro or miniature Worm Gear Motors. Our motor sizes range in diameter from 30mm to just over 90mm. We typically design them to operate with an input voltage of 12VDC – 48VDC. They may be small, but they are mighty! Our larger models are built with rated torque outputs of up to 30Nm.

Popular Models & Part Numbers

MOT-I-81556-106 – This model is designed with a left side gearbox. Rated operating conditions: 24VDC / 44 rpm / 7Nm / 3.5A. Equivalent to Bosch PN: F006B20106

MOT-I-81557-102 – This model is designed with a right side gearbox. Rated operating conditions: 24VDC / 181 rpm / 3.7Nm / 6.5A. Equivalent to Bosch PN: F006B20102

MOT-I-81589 – This model is designed with a left side gearbox. Rated operating conditions: 24VDC / 50 rpm / 10.5Nm / 5A. 

Find Your Solution   Available at Digi-Key


Our Worm Gear Motors are have some great advantages:

  • Very High Torque Capabilities
  • Self-Locking / Braking Features
  • 90 degree, right angle, Output Shaft from motor body
  • Ability to Handle Large Gear Reduction Ratios
  • High Durability
  • Low Noise
  • Flexible Configuration
  • Compact Size

Contact Engineering

What are Worm Gear Motors?

A Worm Drive Motor is a type of electric motor coupled with a unique worm gearbox or gear reducer that, as the name states, encompasses a worm gear to transmit torque and rotation. A worm gear is a screw-like gear that meshes with a spur gear or a helical gear. The worm gear is usually the driving gear, while the spur or helical gear is the driven gear. Worm gear motors are often used in applications where high torque is required, such as in heavy-duty machinery, conveyors, and elevators.

Worm gear motors have a high efficiency due to their design, which allows for smooth operations and continuous power transmission. Their compact design means they can fit into tight spaces and are ideal for applications where space is limited.

Due to the robust nature of the worm gearbox, they transmit high torque, making them ideal for applications where heavy loads need to be lifted or moved. One of the most unique characteristics of a worm gear motor is they have a self-locking ability. This means they can hold a load in place without the need for a brake or other locking mechanism. In order for the self-locking function to work, the worm gear inside the gearbox must be designed appropriately. The expert manufacturing team at ISL Products can provide insight on that.

Low noise and minimal operating vibration are the other benefits of utilizing a worm gear motor. They operate quietly and with minimal vibration, making them ideal for applications where noise and vibration are a concern.

Learn More: DC Motor & Small Gear Motors

Things to consider when selecting Worm Gear Motor

Torque and speed requirements: This will determine the optimal gearbox gear ratio reduction needed to achieve the desired performance.

Brushed or Brushless Motor: There are advantages and disadvantages of using either micro dc motor option. A brush dc motor is the more common option for industrial applications where only simple functions are needed from the gear motor. You would need a brushless dc motor when more complex motion control is needed. Take some time to consider the ideal motor type.

Mounting Orientation and Space Constraints: By design, a worm gearbox rotates the output shaft of the gearmotor by 90 degrees, or perpendicular to the input shaft of the micro motor its coupled with. This can be a distinct mounting advantage if surrounding space is limited. Other similarly sized gear motors such as a spur gear motor, would take up more than double the space due to its inline arrangement.

Power Supply: these types of motors operate at 12 volts or 24 volts DC (direct current). Most industrial equipment runs on AC power. If you plan to power this type of motor with AC power, you will need to utilize a transformer or AC to DC power supply.

Feedback / Control: If you’re looking for a more encompassing option with motor positional feedback and control you should choose a worm gear motor with encoder. Although, this will also require a motor speed controller and other electronics to fully integrate into a product.

Motor Selection Tips

Worm gear motors are an ideal choice for applications that require high torque, low noise and vibration, and minimal space. Due to their unique design, they offer high efficiency and self-locking capabilities. When selecting a worm gear motor, it’s important to consider the torque and speed requirements, mounting orientation and space constraints, power supply, and whether a brushed or brushless motor is best for the application. With the right selection of components and expert advice from ISL Products, you can find the perfect worm gear motor for your specific needs.

For price and availability for our motor product listing, please visit our Digi-Key store! These items are in stock and ship out within 1-3 business days. You can learn about our shipping and logistics programs here. Please contact us for a quotation for production quantities.

Worm Gear Motors FAQ's

  • A worm gear motor is a type of electric motor that uses a worm gear transmission to maximize torque output. It consists of a worm screw, which resembles a screw with a spiral thread, and a worm wheel, which is a toothed wheel that meshes with the worm screw. The rotation of the worm screw moves the worm wheel in a high reduction gear ratio, allowing for efficient torque amplification and speed reduction.

    Worm gear motors are particularly known for their ability to provide high gear reduction ratios in a compact design. They are widely used across various industries, including automotive, robotics, aerospace, automation and industrial applications.

    With their unique design and construction, worm gear motors offer several advantages. Their self-locking feature prevents backward driving, making them suitable for applications that require precise positioning and holding loads. Worm gear motors also offset the direction of rotation of the motor, the worm gearbox rotates the final output axis by 90 degrees.

    Additionally, worm gear motors provide smooth and quiet operation due to the sliding action between the worm screw and the worm wheel.


Our Worm Gear Motors are have some great advantages:

  • Very High Torque Capabilities
  • Self-Locking / Braking Features
  • 90 degree, right angle, Output Shaft from motor body
  • Ability to Handle Large Gear Reduction Ratios
  • High Durability
  • Low Noise
  • Flexible Configuration
  • Compact Size


Worm gear motors are equipped for many industrial usages:

  • Security Door Locks
  • Material Handling Equipment
  • Recycling Machines
  • Security Gates
  • Industrial Machinery
  • Vending Machines
  • Laboratory Equipment
  • Robotics
  • Garage Door openers
  • Dental Chairs
  • Medical Lifts
  • Ambulance Cots & Stretchers


ISL Products will work with you to design and manufacture a Worm Gear Motor that will optimize the performance of your specific application. There are a wide range of parameters that we focus on along with common customizations::

  • Motor Type: Brushed / Brushless
  • Rated Voltage
  • Output Speed Range
  • Motor Power
  • Load Current
  • Torque Range
  • Reduction Ratio
  • Output Shaft Diameter and Length
  • Gear Material
  • Motor Shaft Configuration: (D Cut / Round / Splined / Other)
  • Overall Size Parameters (L, W, H)
  • Encoder Type: Optical / Hall Effect
  • Additional Assembly Requirements (lead wire connection, connectors, etc.)

Request a Consultation for Customization with our engineering team!