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R8 1/2" Face Shell Mill Tool Holder

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More Information
Mfg SKU #202-5160
Tool Holder CategoryFace Mill Holder
BrandShars Tool
shank sizeR8
drawbar thread size7/16x20UNF
arbor diameter1/2



  • Arbor diameter is precision grounded by a CNC grinder to achieve H6 bore tolerance
  • Runout tolerance is within .0002" from R8 shank to face mill arbor
  • Bottom contact surface between face mill and this tool holder is precision ground finished

  • Tool holder is made from drop forged alloy and heat treated to 56-58HRc
  • Each key is precisioned milled and countersinked and finished in black oxided and assemble into the tool holder with screw

  • R8 taper is precision ground to achieve AT3 taper tolerance
  • Slot on the R8 shank is milled finished with equal amount of depth all the way down the shank and the slot is also longer than other imports

  • Each holder comes with a lab certificate on its taper accuracy and runout measurement