Four Bearing 3HP 2.2KW 220V Water Cooled Er20 CNC Spindle Motor Engraving Milling Grind Rpm24000 steel 2.2kw Water-cooled Motor Spindle Four bearing(2*C7005+2*C7002) in our spindle motor 2.2kw Water-cooling High Speed High Precision Spindle Water-cooled Er20 Collet Chuck Pass ISO9001 and CE Quality Certification