2.2kw ER20 Air Cooled Spindle Kit 4 pcs Bearings 0.01mm Accuracy Square Type With Flange 2.2kw QL Inverter / VFD

Speed WaysThrough 3phase output inverter and adjust the inverter frequency to change the spindle speed Power Interface:Optional 5 pinswaterproof air . Theair marked "1 ","2"," 3","4" "5" "GND". "1 ","2 ","3" were connected to inverter(U, V, W), "GND" connected inverter ground.(Pay attention! our spindle "4" connecting to GND,promised personal safety!!) Main Application:Engrave for wood,bamboo,normal PCB,PVC,PMMA,plastic,duotone board(ABS)and etc nonmetal,also can engrave on gold,silver,copper,aluminium,Pb etc soft metal surface working. Bearing is P4grade,2×7005C P4 DT&2x7002C P4 DT 4pcs angular contact bearingsincrease the spindle life High precisionrunout off less than 001mmCoaxial degree less than 0.0025mm.