Seedtec YRG-06 Rotary surface grinder-Ram type with surface grinding diameter 600 mm. Adopted Direct Drive spindle. Accuracy of table surface is 2 mircon and downfeed (minimum unit) is 1 micron. Vertical driven by AC servo motor. Corss and rotary table are driven by servo motor. Rotary table with constant pereipheral velocity. Linear guide way with extra large block for vertical axis.