This 143:1 gear motor spins at 70RPM at 5V, drawing 670mA at stall generating 43 in*oz torque (free running at 57.6mA).

With a 7mm double-flat output shaft (avoid using the green double flat output - it's not meant to take rotational load), and a built-in clutch and built-in mounting screw holes, you can see why we like these motors!

These units have an overall size of 55mm (2.17") x 48mm (1.89") x 23mm (0.906") thick and weighs in at 32g or 1.13oz.

Click on a thumbnail to view full size image.  Assembled with Wheel  Assembled with Mount

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