Press Release Summary:
With their modular design, CNC Expanding Mandrels coverÂ 0.5–2.5 in. standard gripping range;Â options areÂ available up to 25 in. This ID workholding system features sleeves that offer parallel expansion for maximum rigidity, and accuracy is ensured toÂ 0.0005 in.Â TIR. Multiple mount styles and custom-machined drawtube connectors ensure simple, turnkey mounting on both main and subspindle applications. As alternative to gripping finished surface, ID grippingÂ reduces risk of part damage.
Original Press Release:
Royal CNC Expanding Mandrels
Royal's line of CNC Expanding Mandrels offers an off-the-shelf ID workholding system to fit a wide range of applications.
Our unique modular design covers a standard gripping range from 0.5" to 2.5", with specials available up to 25". Sleeves offer parallel expansion for maximum rigidity, and accuracy is guraanteed to 0.0005" TIR. Mulitple mount styles and custom-machined drawtbue connectors ensure simple, turnkey mounting on both main and subspindle applications.
ID gripping is often overlooked as a workholding option, but in many situations it is the best choice:
A part's full length can be turned in a single operation, guaranteeing perfect concentricity of all OD features.
ID gripping offers an alternative to gripping on a finished 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 OD gripping, resulting in superior rigidity and torque transmission.
ID systems provide optimal tool clearnance, making them a great option for machines with live tooling.