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.