here I have a 12/24 volt  motor with a 12 /24 volt 10 amp speed control

this motor can go as slow as 1 revaluation every 30 seconds

or it can be sped up to 60 revaluations in a 1 minute

it has a 5/8'' keyed shaft       shaft length 1-1/2''   this motor can handle a 150 lbs

the motor is used  but the speed controller is NEW