CAT40 15 0.747 Pull Stud Coolant Thru Retention Knob for DMG Mori Doosan

SKU 202-6290

CAT40 15 0.747 Pull Stud Coolant Thru Retention Knob for DMG Mori Doosan

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SKU 202-6290
Mfg SKU # 202-6290
Brand Tegara
head diameter d1 0.747
head angle 15
drawbar thread size 5/8x11UNC
Machine Taper Size CAT40
Machine Builder DMG Mori, Doosan, Feeler, Mori Seiki
neck diameter d2 0.549
hole d3 0.281
pilot d4 0.641
overall length l 2.001
shoulder to head l1 0.787
shoulder to end l2 1.024
Coolant Through Yes
Full Details

Product Spotlight

  • Automation in Manufacturing

    We constantly evaluate our manufacturing process and trying to optimize the cycle time while maintain the top notch quality of our retention knob. Automation in manufacturing process has been a game changer in our industry and we are able to make things faster and more accurate. By integrating the Marposs Unimarr measurement head into the retention knob's grinding process we are able to monitor key dimension on EACH retention knob, and the productivity of a CNC grinder is maximized with the robotic arm to automatically load and unload retention knob stock into the CNC grinder. We are passionately chasing speed and accuracy and that is how we can maintain our competitive edge.

  • Concentricity

    Concentricity is inspected with a Mahr Millimess 1003 Dial Comparator which has a 1 micron (um) graduation and 0.5 micron (um) repeatability to ensure each batch production of the retention knob is true to the spindle center line.

  • Optical Measurement

    A critical dimension on every retention knob is the height of the loading contact point and the height of un-loading contact point. When this two dimensions are not within tolerance, there could lead to improper engagement with main spindle and even cause severe damage to the retention knob's rigidity. This two dimensions are inspected on an optical tool presetter that is made in Italy by a world-renowned manufacture and measurement are monitored in micron (um).


  • Made from alloy steel 5155 with heat treat to RC 56-58
  • Each retention knob is individually magnetic particle tested to ensure free of crack
  • High quality black oxide finish to ensure long enduring tool life
  • Fully ground on all critical surface including a pilot under the flange of retention knob for full contact between tool holder's taper end and retention knob




  • This pull stud is compatible with the following:
  • J&M JM71123
  • TJ Davies PSC-470 X 15
  • Lyndex C40-1500-ISO
  • Collis 69004
  • Command RS4E-0114-C






What's Included