172:1 Metal Gearmotor 25Dx71L mm MP 12V with 48 CPR Encoder

This gearmotor consists of a medium-power, 12 V brushed DC motor combined with a 171.79:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 8245.92 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. This gearmotor is also available without an encoder. Key specifications: voltage no-load performance stall extrapolation 12 V 46 RPM, 100 mA 18 kg⋅cm (250 oz⋅in), 1.8 A (Pololu item #4868)