380V 2.2KW CNC Air Cooling Spindle Motor ER20 4pcs Ceramic Bearings 400Hz 80mm Air Coolant Spindle For Engraving Milling ,more reliable

4 P4 angular contact bearings,2×7005C P4 DT &27002C P4 DTincrease spindle life ER20 collet nutyou can use ER20 collet kits for it Carefull assembly make the spindle more precisional Runout off 001mmCoaxial degree less than 00025mm Better appearance after a long time usingstill looks like new