Seedtec NSG-618TS surface grinder-saddle type is mirror grinding machine with grinding capacity L x W: 470mm x 150 mm. Adopted Direct Drive spindle. Accuracy of table surface is 2 micron and downfeed (minimum unit) is 0.1 micron. Cross feed driven by simplified AC servo motor, Vertical axis driven by AC servo motor. Longitudinal by advance table hydraulic design. 3 axes are box ways.