50:1 Metal Gearmotor 238X99x132 mm

Description: This gearmotor is a miniature (0.94" x 0.39" x 0.47"), high-power brushed DC motor with 250:1 metal gearbox, similar to Sanyo’s popular 12 mm gearmotors. These units have a 0.365"-long, 3 mm-diameter D-shaped output shaft.

These tiny brushed DC gearmotors are intended for use at 6 V, though in general, these kinds of motors can run at voltages above and below this nominal voltage, so they should comfortably operate in the 3 – 9 V range (rotation can start at voltages as low as 0.5 V). Lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor.

The micro metal gearmotors are available in a wide range of gear ratios—from 5:1 up to 1000:1—and offer a choice between two different motors: high-power (HP) and standard. With the exception of the 1000:1 gear ratio versions, all of the micro metal gearmotors have the same physical dimensions, so one version can be easily swapped for another if your design requirements change.

The gearbox has a long (0.365" or 9.27 mm), 3 mm-diameter D-shaped metal output shaft, and the brass faceplate has two mounting holes threaded for M1.6 screws (1.6 mm diameter, 0.35 mm thread pitch). It weighs approximately 0.35 oz (10 g).

Specifications:

Gear ratio: 250:1
Free-run speed @ 6V: 120 rpm
Free-run current @ 6V: 70 mA
Stall current @ 6V: 1600 mA
Stall torque @ 6V: 4.3 kg-cm / 60 oz·in
Size: 24 x 10 x 12 mm
Weight: 0.34 oz
Shaft diameter: 3 mm