Robot MarketPlace - 56:1 Micro Geared Motor

The entire motor with gears weighs only 7.8 grams! They are rated for 4.5V DC, but we have tested and run them at 9.0V, even up to 12V.

Tires can be directly mounted to the 3 mm diameter output shaft.

Specifications at 4.5V:	56:1 - GM11A
Typical operating voltage	1.7-5.0VDC
No load speed	480 rpm
No load current	300 mA
load current	550 mA +/- 30%
Starting torque	800 g-cm
True gear ratio	56.8:1
Shaft Size	3mm diameter. 7.4mm long
Size	0.47" x 0.39" x .94
Weight	7.8 grams (0.27 oz)

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6/19/2009

dan

These little motors do get the job done, but I'm a little disappointed in how mine have turned out. Don't drop them!! I had one with a broken brush tab, and I have one that spins great forwards, but really struggles with the other direction...

11/2/2009

Diana Tarlson

These motors work best for fairy weights. I've seen others use them in ant weights. I've used them in a fairy and they had torque and power to spare. They held up really well, till I met a brushless out runner saw robot. I recommend getting the motor mounts.