48VDC air cooling spindle motor Spindle motor : Brushless DC motor Voltage : 12-48VDC motor Power : 300W Speed : 3000-12000r/min (12V-3000 turn,24V-6000 turn,36V-9000 turn,48V-12000 turn,) Torque : 400mN.m Insulation resistance : >2 megohms Dielectric strength : 400V Diameter : 52mm Axis collet l...