73:1 Metal Gearmotor 20Dx42L mm (Short Output Shaft)

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 6V brushed DC motor combined with a 73:1 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 10.7 mm from the face plate of the gearbox. Key specs at 6 V: 180 RPM and 250 mA free-run, 60 oz-in (4.3 kg-cm) and 3.2 A stall. Note: This gearmotor is being replaced by a new version with a slightly different gear ratio and a longer output shaft (the motor portion is unchanged). This short-shaft version will be… (Pololu item #1163)