Mfa 980d series 35mm single ratio spur geared motor central output shaft mfa 980d471 spur geared metal gearbox 471 gear ratio 45 to 15v voltage rating 621w power rating 11 000rpm no load speed 9281rpm maximum speed 0837a load current 653g cm maximum continuous torque 4176g cm stall torque 35mm diameter 6mm shaft diameter 606mm long 155g weight powerful 5 pole motor the gearboxes are of all metal construction and employ spurred gears high torque transfer output bearings e