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50:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft

by Pololu
SKU 2117
1 review
Save 28%
Original Price £19.66 inc VAT
Current Price £14.21 inc VAT
£11.84 ex VAT
18 in stock.

This 50:1 micro gearmotor is a miniature high-power, 6 V brushed DC motor with long-life carbon brushes and a 51.45:1 metal gearbox. It has a cross section of 10 x 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. This version also has a 4.5 x 1 mm extended motor shaft.

These tiny brushed DC gearmotors are available in a wide range of gear ratios from 5:1 up to 1000. Wth five different motors: high-power 6 V and 12 V motors with long-life carbon brushes (HPCB), and high-power (HP), medium power (MP), and low power (LP) 6 V motors with shorter-life precious metal brushes. The 6 V and 12 V HPCB motors offer the same performance at their respective nominal voltages, just with the 12 V motor drawing half the current of the 6 V motor. The 6 V HPCB and 6 V HP motors are identical except for their brushes, which only affect the lifetime of the motor.

The HPCB versions can be differentiated from versions with precious metal brushes by their copper coloured terminals. Note that the HPCB terminals are 0.5 mm wider than those on the other micro metal gearmotor versions (2 mm vs. 1.5 mm), and they are about 1 mm closer together (6 mm vs. 7 mm).


  • Size: 10 x 12 x 26 mm (Output shafts add 14 mm to the 26 mm length)
  • Weight: 9.5 g
  • Shaft diameter: 3 mm (D shaft)
  • Gear ratio: 51.45:1
  • Free-run speed @ 6V: 625 rpm
  • Free-run current @ 6V: 120 mA
  • Stall current @ 6V: 1600 mA
  • Stall torque @ 6V: 15 oz·in
  • Extended motor shaft?: Y
  • Long-life carbon brushes?: Y
  • Motor type: 1.6A stall @ 6V (HPCB 6V - carbon brush)