... Electro Spindlefeatures:1) Imported bearings with good quality, long working life.2) Application: Milling,Engraving,Drilling in all kinds of CNC ... passed polishing process, Improve spindle concentricity to increase motor working life.Provide:1.watercooling:300w,800w,1.2kw,1.5kw,2.2kw ...