... rolling machine 3. 1 year warranty time Combined Boring Head for CNC Skiving Roller Burnishing Machine1. Processing dimension: Inner ... and burnishing thickness: 6mm2. Main components:Body of the boring head , sustainable rack , shaft , rolling cylinder, Nyon stock , pull ... thickness , cutting speed, properly and best takes advantage of blade, burnishing volume, process lubricated oil or liquid etc. 8. ...