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Small 12V stepper motor with metal gearbox and flattened shaft

Adafruit

Adafruit ADA-918 12VDC 48-Step 1/16 Gear Stepper Motor

SKU CH-WWVF-ZW95X

A 12 V unipolar stepper motor with a 1/16 reduction gearset delivering 513 steps per revolution and up to 80 RPM

  • TypeOther
  • Unipolar drive simplifies wiring with common ground
  • 1/16 reduction gearing multiplies resolution to 513 steps per revolution
  • 48 steps per revolution enables precise positioning
  • Flattened shaft allows secure set-screw attachment
  • 80 RPM at 12 VDC delivers high torque at low speed

First Stepper Motor

This 12 VDC uni-polar stepper includes a 1/16 reduction gear set and a built-in mounting plate with two holes. The shaft is flattened for set-screw attachment. It delivers 513 steps per revolution and suits small projects or experiments with Arduino Motor Shields.

Before Ordering

Verify your driver can supply 12 VDC and supports single or double stepping modes. Interleaved or micro-stepping is not practical with the gear reduction. Ensure your mechanical design accepts the fixed two-hole mounting pattern and flattened shaft.

Sustained Operation

Maximum speed reaches 80 RPM at 12 VDC and 50 RPM at 9 VDC. The gear train increases torque but reduces top speed compared with un-geared steppers. Manual turning is possible but feels less smooth because of the internal gearing.

Highlights

  • Unipolar drive simplifies wiring with common ground
  • 1/16 reduction gearing multiplies resolution to 513 steps per revolution
  • 48 steps per revolution enables precise positioning
  • Flattened shaft allows secure set-screw attachment
  • 80 RPM at 12 VDC delivers high torque at low speed

Specifications

BrandAdafruit Industries
ModelADAID-918
Part NumberADA-918
TypeOther

Questions about this item

Does the ADA-918 ship with wires or a driver board, or must they be sourced separately?

The motor arrives with pre-attached leads only; a driver board such as the Adafruit Motor Shield and any mounting hardware are not included and must be obtained separately.

Should I pick the 48-step or 513-step figure when sizing this motor for my project?

The motor has 32 base steps per revolution multiplied by the 16.032 gear reduction, yielding 513 effective steps per revolution — use that number for motion planning.

What speed will I actually see at 12 V with the 1/16 gearing?

At 12 V the geared output reaches about 80 RPM; at 9 V it drops to roughly 50 RPM, so expect slow, high-torque rotation rather than high speed.

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