Micro Metal Gearmotor (50:1, 400RPM)

The Micro Metal Gearmotor is a compact brushed DC motor with a 50:1 all-metal gearbox delivering 400 RPM output. Designed for lightweight robotics and precision motion mechanisms, it provides reliable torque and speed control in space-constrained builds. It is ideal for students, hobbyists, and educators creating micro rovers, line-following robots, and experimental platforms.

50:1 metal gear reduction

The integrated miniature metal gearbox steps down the 13000 RPM raw motor speed to a usable 400 RPM output with a 50:1 reduction ratio. This mechanism delivers reliable rotational output and consistent torque control for lightweight robotic drive systems.

D-shaped output shaft

Featuring a 9.27 mm (0.365-inch) D-shaped metal shaft, the motor ensures a slip-free connection with matching wheel hubs such as 42x19 mm and 32x7 mm wheels. The flat-edge geometry maintains steady torque transfer during rapid acceleration and changes in direction.

Brass faceplate and mounting

The motor includes a brass faceplate with two M1.6 threaded mounting holes (0.35 mm pitch) for direct chassis attachment. It is compatible with standard and extended micro gearmotor brackets, which help enclose exposed gears and support wheels with recessed hubs.

Efficient 6V electrical performance

Operating at 6V, the motor draws a rated current of 55mA and achieves a stall torque of 0.39 kg·cm with a 350mA stall current. This balance of efficiency and output torque makes it practical for battery-powered autonomous systems.

Compact robotics applications

With its minimal footprint and dependable motion delivery, this gearmotor is well suited for line-following robotic vehicles, classroom STEM platforms, micro rovers, and small electromechanical mechanisms.