The lathe has a vertical layout with the configuration of left and right slide carriage, which can machine the piston excircle, ring grooves, top surface and abnormity edge chamfering of ring grooves in the course of one fixing;
Equipped with SIEMENS 840D NC system and SIEMENS AC servo system;
Equipped with three cutter spacings linear servo cutter saddle (patent product of EPOCH NC), the lathe can process the convex irregular ellipse or other special shaped piston excircle, As the saddle has three cutters which are made of different materials or shapes, it can turn the piston skirt, piston head (with Ni-Fe ring), and oil groove;

Equipped with toolholder turret with eight positions;
The piston curved surface data are produced by "Epoch Piston Curved Surface Data Processing Software"(copyright product of EPOCH NC), which can edit all kinds of special excircles required by the piston including standard ellipse, ellipse overlapped eccentric circle, eccentric ellipse, and rotary ellipse, or the discrete data fitting and so on;
Equipped with the linear servo control panel developed completely by EPOCH NC, embedded to 840D NC system by OEM software, achieving free programming and improving the working accuracy and stability.