Grainger has some motors that work well! I tried a 60 rpm but it did not have enough torque to start the load, so I went to a 20 rpm and it starts right up! The higher the rpm--the less torque you get from these little motors.
I wired it to activate when the nozzle lever was lifted and others have even gone so far as to devise a way to connect a switch internally in the nozzle lever!
Kinda makes a cool display piece when you turn it on for people viewing your collection! It sure was a big hit here!
Just google grainger.com and look thru the electric motor section!