172:1 Metal Gearmotor 25Dx56L mm MP 12V

This gearmotor consists of a medium-power, 12 V brushed DC motor combined with a 171.79:1 metal spur gearbox. 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 specs at 12V: 43 RPM and 200 mA (max) free-run, 250 oz-in (18 kg-cm) and 2.1 A stall.