Royal I.D. Workholding Systems (DRAFT)

CNC Expanding Mandrel 3D Model

Shown here, a long casting is gripped via the I.D. bore so the full O.D. can be machined in a single operation.

Royal’s line of I.D. Workholding Systems provides a wide range of off-the-shelf solutions for many common turning, milling, and grinding 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, Yet 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 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.
View CNC
I.D. Workholding
CNC I.D. Workholding

CNC
I.D. Workholding

  • For use on all CNC Lathes.
  • Actuated via machine’s drawtube.
  • Accu-Length™ design makes this system a great sub-spindle workholding option.
  • Includes a custom-machined drawtube connector for your specific lathe.
View Power-Block™
I.D. Workholding
Power-Block™ I.D. Workholding

Power-Block™
I.D. Workholding

  • For use on all machining centers.
  • Can be used in both stationary and 4th/5th – axis applications.
  • Hydraulic or pneumatic actuation.
  • Well suited to auto-load applications.
View Key-Operated
I.D. Workholding
Key-Operated I.D. Workholding

Key-Operated
I.D. Workholding

  • Universal – can be used in virtually any turning, milling, or grinding application.
  • 1 1⁄2” dia. shank is quickly and easily gripped in a chuck or collet.
  • Manual actuation makes this model best suited to non-production applications.
View Custom
I.D. Workholding
Custom I.D. Workholding

Custom
I.D. Workholding

  • Wide range of options available:
    • Oversize parts – up to 25”
    • Dual-sleeve for long parts
    • Non-round bores
    • Splined sleeves
    • Positive drive pins
    • Knurled sleeves
    • Extra-range sleeves
    • Surface treatments
Perfect Combination – A Royal Quick-Grip™ CNC Collet Chuck on the main spindle and a Royal CNC I.D. Workholding System on the sub.
Expanding Mandrel Application