Overview

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 Gear Motor HP w/ 50:1 gear ratio and Micro Metal Gear Motor HP w/ 75:1 gear ratio are also available.

Gearmotor Dimensions

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). Versions with the extended motor shaft have a 1mm diameter round shaft that protrudes 4.5 mm from the rear of the motor, between the two motor terminals; this is not pictured in the above dimension diagram.

Specifications

Dimensions

• Size: 24 x 10 x 12 mm
• Weight: 0.34 oz
• Shaft diameter: 3 mm

General specifications

• Gear ratio: 100:1
• Free-run speed @ 6V: 320 rpm
• Free-run current @ 6V: 80mA
• Stall current @ 6V: 1600 mA
• Stall torque @ 6V: 30 oz·in
• Extended motor shaft?: N