Royal I.D. Workholding
Royal’s line of CNC Expanding Mandrels offers an off-the-shelf I.D. workholding system to fit a wide range of applications. Our unique modular design covers a standard gripping range from 0.5″ to 3.25″, with specials available up to 25″. Sleeves offer parallel expansion for maximum rigidity, and accuracy is guaranteed to ± 0.0005″ TIR.
I.D. gripping is often overlooked as a workholding option, but in many applications it is the best choice:
- A part’s full length can be turned in a single operation, guaranteeing perfect concentricity of all O.D. features.
- I.D. gripping offers an alternative to gripping on a finished O.D. surface, reducing the risk of part damage.
- For many parts, the engagement-length of an internal bore can be greater than what is available for external gripping, resulting in superior rigidity and torque transmission.
- I.D. systems provide optimal tool clearance, making them a great option for machines with live tooling.