... 2.grinder 360 degree free rotating 3.cutting, grinding, milling, drilling and polishing product introduction :1. It can ... cutting, grinding, milling, drilling and polishing stones, but also for curve lines processing with curved arm, such as elipse processing.2. This machine ... curveany in and side curvegriding head rotation speed1440/2880/r/minpower source50Hz-380v SYG-2A/4 cutting and grinding machine