12 9 E Ring Grinding Id 49 M C
CNC EXPANDING MANDRELS Royal Products. ROYAL CNC EXPANDING MANDRELS Rigid and Accurate ID Workpiece Gripping ID gripping is often overlooked as a workholding option, yet in many situations it is the best choice: 3 Allows for full access to the entire length of the workpiece so all external diameters can be turned in a single operation, guaranteeing perfect concentricity.