TO MEET RECENT DIVERSIFICATION OF COMMODITIES AND CURRENT LABOR SHORTAGE, MACHINE TOOL CUSTOMERS DEMAND HIGHLY PRODUCTIVE MACHINE TOOLS WHICH ARE CAPABLE OF MACHINING VARIOUS DIFFERENT WORKPIECES ON A SMALL LOT SIZE BASIS. A SUPER HIGH-SPEED CNC/CBN CYLINDRICAL GRINDER MEETS THIS DEMAND. THE GRINDER MACHINES A WORKPIECE BY SINGLE-PATH GRINDING IN WHICH A THIN METAL BONDED CBN WHEEL, THAT ROTATES AT A PERIPHERAL SPEED OF 160 M/S, IS MOVED ALONG THE WORKPIECE, THEREBY REALIZING BOTH HIGH PRODUCTIVITY AND HIGH FLEXIBILITY.