CAT40 ER16 4" Dual Contact Mini Nut Collet Chuck Tool Holder

SKU 202-7037

CAT40 ER16 4" Dual Contact Mini Nut Collet Chuck Tool Holder

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SKU 202-7037
Mfg SKU # 202-7037
Tool Holder Category Collet Chuck
Brand Tegara
shank size CAT40
projection length 4
max rpm balanced to G2.5 20000
TIR (inch) 0.0001
drawbar thread size 5/8x11UNC
Stop Screw Thread Size M11 x 1.0
Dual Contact Tool Holder Yes
collet series ER16
collet chuck style standard
collet nut diameter 0.87
Collet Nut Style Mini
Maximum Torque Ft/Lb 22
Coolant Through Thru Spindle & DIN-B Flange
Full Details


  • shars cat40 dual contact tool holder

    Mirror Finished

    Taper ground to AT3 or better specification ensures 80% or more contact with spindle to reduce harmonics, improve runout tolerance and deliver consistence performance

  • shars cat40 dual contact  tool holder

    Flange Contact

    Precision mill finished from multi-tasking Mazak machine on the flange face to eliminate the 1/8" gap between flange and spindle nose to minimize vibration

  • shars cat40 dual contact  tool holder

    ER Collet Nut

    No longer having an off-center internal collet ring, this collet nut's internal clamp is designed with balance in mind while it's easy to snap-in snap-out ER collet

Tech Specification

  • Taper Size


  • Collet Series


  • Projection Length


  • Collet Size Range

    0.03125" - 0.375"

  • TIR (at collet face)

    < 0.0001"

  • Max Balanced To

    G2.5 20,000 RPM

  • Coolant Type

    Thru Spindle & DIN-B Flange

  • Max Torque

    22 ft/Lbs

  • Collet Nut Diameter


Product Spotlight

  • Dual Contact

    With simultaneous contact on taper and flange face between the spindle and tool holder, dual contact tooling eliminates the 1/8” gap between the flange face and the spindle nose to increase rigidity, minimize vibration, extend cutting tool tool life, and greatly improve workpiece surface finish at aggressive speed & feed


    By utilizing DONE IN ONE capability from Mazak Integrex machine with a second turning spindle, all processes from raw bar stock material to final machining in just one machine to improve machining accuracy and streamline production output.

  • High Torque Collet Nut

    Innovative coating process significantly increases the clamping force by 75% compared to standard ER collet nut. More gripping force provides better rigidity and reduces the possibility of losing grip on the round shank which lead to expensive damage on cutting tools and work piece material.

  • SHARS Dual Contact tool holder can only be used on machine center with dual contact spindle
  • Compatible with BIG-PLUS ® spindles.
  • *BIG-PLUS® is a trademark of Daishowa Seiki Kabushiki Kaisha; Big Daishowa Seiki Co., Ltd., Corp. 
    Compatible with BIG-PLUS® spindles, but not licensed.

What's Included