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100:1 Micro Metal Gearmotor HP with Extended Motor Shaft

100:1 Micro Metal Gearmotor HP with Extended Motor Shaft
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100:1 Micro Metal Gearmotor HP with Extended Motor Shaft100:1 Micro Metal Gearmotor HP with Extended Motor Shaft100:1 Micro Metal Gearmotor HP with Extended Motor Shaft
100:1 Micro Metal Gearmotor HP with Extended Motor Shaft100:1 Micro Metal Gearmotor HP with Extended Motor Shaft
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SKU:  PPPOL2214
Part Number:  2214
Brand:  Pololu

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This gearmotor is a miniature (0.94" x 0.39" x 0.47"), high-power brushed DC motor with 100:1 metal gearbox, similar to Sanyo’s popular 12 mm gearmotors. These units have a 0.365"-long, 3 mm-diameter D-shaped output shaft. This version also has a 4.5 x 1 mm extended motor shaft.

Key specs at 6 V: 320 RPM and 80 mA free-run, 30 oz-in (2.2 kg-cm) and 1.6 A stall.

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 three different motors: high-power (HP), medium-power (MP), 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.

Some versions of the gearmotors are sold with an additional 1mm-diameter output shaft that protrudes from the rear of the motor. This 4.5mm-long rear shaft rotates at the same speed as the input to the gearbox and offers a way to add a custom-built encoder to provide motor speed or position feedback.

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). The gearmotor 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.

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: 80 mA
Stall current @ 6V: 1600 mA
Stall torque @ 6V: 30 oz·in
Extended motor shaft?: Y

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