... spindle,stepper motor 3.With rotary 4.OEM,CE,ISO9001 SD-1313Y column cnc router,3D cnc engraving machine for column/cylinder ... axis adopt linear guide,which runs smooth and has high precision.2.The machine is of steel structure which is strong and ... long tome usage.3. with powerful Water-cool spindle,the machine has a big cutting capacity and high efficiency.4.By changing the ...