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CAT40 6 JT Jacob Taper Drill Chuck Adapter

In stock

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More Information
Mfg SKU #202-1255
drill chucks categoryCNC Drill Chuck Arbors & Adapters
shank sizeCAT40
TIR (inch)0.0002
thread size5/8-11
mounting size6JT
projection length1.5
drawbar thread size5/8x11UNC


  • shars cat40 tool holder

    AT3 or Better

    Taper ground to AT3 or better ensures 80% or more contact with spindle to reduce harmonics and improve runout tolerance

  • shars cat40 tool holder

    Pilot Contact

    Inside bore are precision turned to engage a better contact with retention knob's pilot to increase rigidity

  • shars cat40 tool holder

    Taper End Face

    Precision turning surface finish provide perpendicular contact with the flange of retention knob to increase rigidity


  • Mirror Finish

    To achieve AT3 or better taper contact as an industry standard, our taper surface are precision ground on Shigiya CNC grinder from Japan. We are not satisfied with just meeting the industry standard, the surface roughness on the taper is maintained to mirror finish.

  • Flange and V-groove are precision ground to ensure reliable tool change