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This cylindrical, 2.62" x 0.98" x 0.98" gearmotor uses a brushed DC motor with extra-strong magnets and a 98.78:1 metal gearbox to deliver a lot of power in a relatively small package. It has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 4741 counts per revolution of the gearbox’s output shaft. These units have a 0.315"-long, 4 mm-diameter D-shaped output shaft.

These motors are intended for use at 6 V. In general, these kinds of motors can run at voltages above and below this nominal voltage, so they should comfortably operate in the 3 – 9 V range, though they can begin rotating at voltages as low as 1 V. Higher voltages could start negatively affecting the life of the motor.
Key specs at 6 V: 100 RPM and 450 mA free-run, 160 oz-in (11.5 kg-cm) and 6 A stall.


  • Size: 25D x 66L mm
  • Weight: 3.62 oz
  • Shaft diameter: 4 mm


  • Gear ratio: 98.78:1
  • Free-run speed @ 6V: 100 rpm
  • Free-run current @ 6V: 450 mA
  • Stall current @ 6V: 6000 mA
  • Stall torque @ 6V: 160 oz·in
  • Lead length: 8 in

Note: May vary by a few inches.


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