NANO Grinder Internal Grinder Nano Grinder ID The ID grinder utilizes an integrated workhead spindle to drive the work piece. A specially designed grinding spindle is mounted in the x-theta slides in the center of the machine. The dressing tool is shaped as a ring with diamonds on the internal diameter and is located on the driver just below the workpiece. The ID grinder is available with different work holding principles depending on production requirements. The Nano Grinder is a turnkey solution that includes maintenance, service and support. We have profound experience in providing entire production lines, including material handling, measuring, super finishing machines, washing, etc.