If you don't mind belting, a residential garage door opener(i bought mine used from a garage door guy for 5 bucks) motor spins at about 1000rpms,they have 1/3 and 1/2 hp i have a 1/2 hp rigged up to my monster mill 2 roller with a 1 1/2" pulley on the motor and a 10 or 12 inch on the mill works...