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56.8:1 Mini Metal Gear Motor (GM11a, 3mm D-shaped shaft)

56.8:1 Mini Metal Gear Motor

If you're looking for a speedy motor with a reasonable amount of torque (for say, moving a small robot that isn't going to fight in a Sumo contest), the GM11a is an excellent candidate. This particular motor has a 7.4mm long, 3mm dia. cylindrical output shaft that hasn't been pre-ground with a flat spot, so you can be guaranteed a very true-running shaft.

Here are the performance measurements:

Running at 3V:

Free running RPM Free running Current Stall Torque Stall Current
181 28mA 5.9 in*oz 428mA

Running at 6V:

Free running RPM Free running Current Stall Torque Stall Current
370 42mA 6.1 in*oz 760mA

 

Data Sheet: GM11a Performance Datasheet PDF (155KB)
Data Sheet: Solarbotics Gearmotors Specification Summary

 

Price: NZ$30.35

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