Pololu 47:1 Metal Gearmotor 25D x 64L mm MP 12V with 48 CPR Encoder (No End Cap)

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£29.04 £24.20

This gearmotor consists of a medium-power, 12 V brushed DC motor combined with a 46.85:1 metal spur gearbox, with an integrated 48 CPR quadrature encoder on the motor shaft, which provides 2248.86 counts per revolution of the gearbox’s output shaft.


The gearmotor is cylindrical, with a diameter just under 25 mm, and the D-shaped output shaft is 4 mm in diameter and extends 12.5 mm from the face plate of the gearbox.

Key specifications :

Voltage : 12 V
No-load Performance : 160 RPM, 200 mA
Stall Extrapolation : 6 kg.cm (85 oz.in), 2.1 A

Note: Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. For these gearboxes, the recommended upper limit for instantaneous torque is 15 kg-cm (200 oz-in); we strongly advise keeping applied loads well under this limit. Stalls can also result in rapid (potentially on the order of a second) thermal damage to the motor windings and brushes, especially for the versions that use high-power (HP) motors; a general recommendation for brushed DC motor operation is 25% or less of the stall current.


  Size:   25D x 64L mm¹
  Weight:   101 g
  Shaft Diameter:   4mm
  Gear Ratio:   46.85:1
  No-load speed @ 12V:   160 rpm
  No-load current @ 12V:   200 mA
  Stall current @ 12V:   2100 mA
  Stall torque @ 12V:   85 oz·in 
  No-load speed @ 6V:   80 rpm²
  Stall current @ 6V:   1050 mA²
  Stall torque @ 6V:   42 oz·in²
  Motor type:   2.1A stall @ 12V (MP 12V)
  Lead length:   8 in³


1. Length does not include the motor shaft. See dimension diagram for details.

2. This motor will run at 6 V but is intended for operation at 12 V.

3. May vary by a few inches.