Power: 500W, Air cooling method, working voltage: 12-100VDC.Idling Speed: 2000-12000r/min; Torque:0.5NM; Chuck part length: 45MM; Diameter: 52mm; Insulation resistance: Greater than 2 megohms; Insulation dielectric strength: 400V; Spindle radial runout 0.01-0.03 high precision.Note: This motor has quiet operation, small volume and high speed, and the rear end of the motor is reinforced with a cooling fan, which can be safely worked for a long time!Can be used for solid wood PCB engraving, drilling, etc.52mm Diameter spindle motor mount,compared with the aluminium profile fixture,the accuracy is much higher , and it is hard to deform.Colour:silver + blackMaterial:MetalPackage Contents:1 x cnc spindleOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.