The Johnson Geared motor is famous for its compact size and massive torque. A torque as much as x3 as compared to center shaft or side shaft geared motor, with an affordable price tag. The motor comes with a metal gearbox and off centered shaft , also shaft has a metal bushing for wear resistance. Apart from robotic application they are also used in industrial applications, vending system, hygiene and cleaning industry, and household electric appliance. Specifications - RPM - 500 Shaft Diameter - 6mm (with internal hole) Shaft Length - 15 mm Dimensions : Gearbox diameter - 37mm; Motor Diameter - 28.5 mm; Length (body only) - 63mm Weight - 300 gms Torque - 20 kgcm Voltage - 6 to 24 (Nominal Voltage - 12v) No-load current = 800 mA(Max), Load current = 9 A(Max)