12V and 24V Brushless DC Motor Both external controller and integrated electronics are optional. ... Diameter: 42mmLength: 60, 65, 75 and 85mmVoltage: 24V DC, 220V AC (310V DC)Poles: 4 polesNo-loading speed: 4300, 5200 and 9 ... 3,400, 4,000 and 8,000rpmRated current: 0,37A (AC), 1.8, 2.8ARated torque: 0.042, 0.067, ... with external controllerCustomized motor requirements are welcome 42mm Brushless DC Motor