For any applications higher than 12,000 RPM, WIDIA™ recommends that the complete toolholder assembly

(toolholder, retention knobs, collets, hardware, and cutting tools) be balanced as one identity.

  • DIN 69871 7/24 taper.
  • Standard M24 metric drawbar thread.
  • Taper accuracy of AT3 specification or better.
  • All tools set to form AD coolant specification. Many can be converted to form B style.
  • Maximum 12,000 RPM.
  • Maximum 100 bar (1,500 psi) coolant pressure.