Company History | MINAKUCHI MACHINERY WORKS LTD.February, 1936: Senta Minakuchi, the first president, began manufacturing and . The LEO-600-30F2 grinder for CNC OA rollers was completed and announced.cnc grinding minakuchi leo 600,Product Information | MINAKUCHI MACHINERY WORKS LTD.Our cylinder grinders for rubber rollers can meet the needs for both . We at Minakuchi Machinery Works will continue our research and . LEO-600-F4-BME . Measuring Instrument for CNC Rubber Roller Outer Diameter and Deflection.