Dia. 60mm Brushless DC Motor Both external controller and integrated electronics are optional. Key ... phaseNo loading speed: 4800, 4000rpm, close-loop 1,8000rpmRated power: 60, 50, 5.5, 100WRated speed: 3900, 3200, 70, 15000rpmRated current ... motor with external controllerCustomized motor requirements are welcome 60mm Brushless DC Motor