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Geared Stepper Motors

SLW Motor builds geared stepper motors from 8mm to 15mm in diameter, with straight or 90° shaft gearboxes and custom ratios, for open-loop positioning tasks that don't need a feedback sensor.

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A Closer Look

What Is a Geared Stepper Motor

Definition

A geared stepper motor attaches a gearbox to the motor's gear train, trading speed for output torque and finer resolution at the shaft. Position is tracked by counting steps, not reading a sensor, so the assembly runs open-loop.

Key Benefits

  • Finer resolution: the reduction ratio divides the step angle at the output
  • Open-loop: position is tracked by counting steps, not by a sensor
  • More torque: gearing trades motor speed for output torque
Products

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  • Geared Stepper Motors

Lineup

Stepper Gear Motor Lineup

MotorShaft OutputGear RatiosOutput at 500 ppsTypical Use
8mm stepper motor with 10mm gearboxStraight20:1–250:1Step angle to 0.072°Micro positioning in wearables and instruments
8mm stepper motor with 12mm gearboxStraight, 9mm gearbox10:1–298:15–150 rpm, 35–918 g·cm pull-in torqueSlightly wider gearbox for more torque on the 8mm motor
8mm stepper motor, parallel output shaftOffset parallel50:1–380:1173–1,170 g·cm pull-in torqueOffset axis for low-profile layouts
8mm stepper motor with 90° shaft gearbox90° right-angle42:1–158:1146–487 g·cm pull-in torqueRight-angle positioning in the smallest envelope
10mm stepper motor with gearboxStraight, 9–12mm gearbox10:1–1000:11.5–150 rpm, 59–3,960 g·cm pull-in torque, step angle to 0.018°Smooth, repeatable positioning in compact assemblies
10mm stepper motor with 90° shaft gearbox90° right-angle42:1–230:1249–1,056 g·cm pull-in torqueDirectional transmission in tight housings
15mm diameter 12 stepper motor with gearboxStraight10:1–1000:1Step angle to 0.018°Wider gearbox platform for mechanical stability
15mm diameter 15 stepper motor with gearboxStraight, fixed 10mm gearbox length42:1–230:1265–1,050 g·cm pull-in torqueModerate-to-high reduction without a longer housing
15mm stepper motor with 90° shaft gearbox90° right-angle42:1–230:1529–2,240 g·cm pull-in torqueRight-angle positioning needing extra structural rigidity
15mm stepper motor with worm gearbox90° worm, self-locking42:1–230:1529–2,240 g·cm pull-in torquePositioning that must hold without holding current

Every unit in this micro stepper motor range is a stepper motor with gearbox built and matched in-house; the 8mm worm-geared variants (08 and 10) sit under worm gear motors, and all 90° stepper units are also collected under right angle gear motors.

Trade-Offs

Configuration and Trade-Offs

Ratio and shaft orientation come from the tables above, and winding voltage is matched to your stepper driver, while housing and gear materials follow the application.

Open-loop keeps wiring simple, but missed steps and backlash limit accuracy, and hold current raises winding temperature; stepper gear motors vs BLDC with encoder covers that boundary.

Applications

Geared Stepper Motor Applications

Robotics

Open-loop stepping suits gimbal indexing and precise positioning in Learn More, and it also drives valve and pump metering, lock actuation, and lens positioning in Power Tools.

The same open-loop control keeps movement simple and reliable in robotic indexing tasks without feedback.

Explore Robotics & Automation Applications
3D Printing & CNC

Open-loop stepping is well suited to Learn More equipment, handling positioning and indexing duties.

Geared stepper motors deliver the controlled stepping these machines need for repeatable motion.

Explore 3D Printing & CNC Applications
Medical Equipment

Valve and pump metering in Learn More relies on open-loop stepping for accurate, repeatable actuation.

A geared stepper motor provides the precise metering motion these medical devices require.

Explore Medical Equipment Applications
Access Control

Lock actuation in Learn More systems uses open-loop stepping for dependable, repeatable operation.

Geared stepper motors suit the compact actuation needs of access control hardware.

Explore Access Control Applications
Alternatives

Need Continuous Rotation or Feedback Instead?

If the mechanism needs continuous rotation, closed-loop feedback, or higher speed rather than step-based holding, these alternatives use the same gearbox principle without the open-loop limits above.

Broader ranges include brushed DC motors, brushless DC motors, coreless DC motors, and high speed brushless motors.

Quote

Get a Quote for Your Geared Stepper Motor

Send a target ratio, shaft orientation, voltage, and housing material and contact SLW Motor for sample cost, lead time, and a quotation on a geared stepper motor built to your drawing.

Share your drawing and requirements, and we will quote a geared stepper motor to match your target ratio, shaft orientation, voltage, and housing material.

Alternatives

Continuous Rotation and Feedback Alternatives

Why SLW

Why SLW Motor

SLW Motor has manufactured micro motors and gearboxes in Shenzhen since 2012, with 56+ staff and 15+ years of R&D experience, including work for Japanese manufacturing clients.

Shipments reach 30+ countries, and small-batch samples and bulk orders run through the same OEM/ODM process.

  • ISO 9001:2015: Production is certified to this standard
  • RoHS Compliant: Meets RoHS requirements
  • Incoming Inspection: Every order is checked on arrival
  • In-Process Testing: Monitored throughout production
  • Final Verification: Dimensional and performance consistency
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Tell us your project or application requirements, and our team will get back to you with technical support, product recommendations, or a customized motor solution.

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