Spindle motor: new air-cooled DC motorApplications: CNC Engraving machinesWorking voltage: 12-48VDCPower: 300WCurrent: Maximum current is 6ASpeed: 3000-12000r / min (12V-3000 turn, 24V-6000 turn, 36V-9000 turn, 48V-12000 rpm)Torque: 400mN.mAbsolute temperature rise: 15 degrees CelsiusInsulation resistance: greater than 2 megohmsInsulation Dielectric Strength: 400VDiameter: 52mmChuck part length: Arbor part 35mm, (including nut and sandwich 52mm)Using a wrench: 13/17 wrenchTotal motor length: 175mm (including clamping parts and motor)Spindle weight: 0.8KGSpindle radial runout of about 0.01mm.Can be used for engraving metal or non-metallic materials.