Pololu 120:1 Mini Plastic Gearmotor Offset 3mm D-Shaft Output

£4.10 Ex VAT
£4.92 Inc VAT

This compact, inexpensive, low-current gearmotor (brushed DC motor with a 120:1 reduction gearbox) is well suited for use in small robots. At 4.5 V, it has a free-run speed of 120 RPM and a stall torque of approximately 20 oz-in (however, the built-in safety clutch might start slipping before the stall torque is reached). The D-shaped output shaft has a diameter of 3 mm and works with the Pololu wheels and 3mm universal aluminum mounting hub. This gearbox output shaft is offset from but parallel to the motor shaft.

This brushed DC gearmotor is very compact and weighs only 0.7 ounces (19.5 grams) — perfect for building a quick, miniature robot. The recommended operating voltage range for this motor is 3 to 6 V, though the gearmotor can start rotating at voltages as low as 0.6 V. At 4.5 V, the motor has a free-run current of 80 mA and a stall current of 800 mA; this relatively low current draw makes this a great match for our qik 2s9v1 dual serial motor controller and programmable Orangutan robot controllers. The stall current, torque, and rotation speed will approximately scale linearly with the motor voltage. The gearbox is protected by a built-in safety clutch that will typically slip before gear teeth can shear.

  • Size : 36.5 x 20 x 27.4 mm1
  • Weight : 19 g
  • Shaft diameter : 3 mm2
  • Shaft type : offset 3mm D
  • Typical operating voltage : 4.5 V
  • Gear ratio : 120:1
  • Free-run speed @ 4.5V : 120 rpm
  • Free-run current @ 4.5V : 80 mA
  • Stall current @ 4.5V : 800 mA
  • Stall torque @ 4.5V : 20 oz·in3

Add to Cart:

  • Model: GEARMOTOR120-3D

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