2.2KW CNC Air Cooling Spindle Motor ER20 4pcs Bearings With 2.2KW QL Inverter VFD 80mm Aluminium Clamping Bracket ,Efficient Performance

Size80x224mmMiddle body diameter80mmxLength224mm Speed Ways: Through 3-phase output inverter and adjust the inverter frequency to change the spindle speed. Cooling:Air cooling Power Interface:Optional H20-4 pins waterproof air . The air marked "1 ","2"," 3"," 4", "1 ","2 ","3" were connected to inverter (U, V, W), 4 connected inverter ground. Main Application:Engrave for wood,bamboo,normal PCB,PVC,PMMA,plastic,bamboo,duotone board(ABS)and etc nonmetal,also can engrave on gold,silver,copper,aluminium,Pb etc soft metal surface working.