78:1 Metal Gearmotor 20Dx43L mm 6V

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 6V brushed DC motor with long-life carbon brushes combined with a 78.13:1 metal spur gearbox. The gearmotor is cylindrical with a diameter of 20 mm, and the D-shaped output shaft is 4 mm in diameter and extends 18 mm from the face plate of the gearbox. Key specifications: voltage no-load performance stall extrapolation 6 V 180 RPM, 150 mA 4.4 kg⋅cm (61 oz⋅in), 2.9 A (Pololu item #3703; also #3715 — soldered / kit / shaft variants)