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​Since tapping operations are critical, the security and quality are important. To achieve a top result, not only the tapping tool, but also the tool holder is important. The new, versatile CoroChuck™ 970 is designed for a stable and precise tapping process in all materials.

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  • Improves tapping tool life
  • Secure machining process
  • Significantly reduces the risk of cutting oversized threads



  • Synchronized tapping reduces thrust force on tap flanks
  • Accurate depth, thanks to limited axial compensation
  • New, improved design for internal coolant
  • Suitable for high-pressure coolant up to 80 bar (1160 psi)
  • More back-ends to fit your machine



  • Chuck designed to eliminate oversized threading
  • Suitable for all synchronized tapping operations



​Product range

  • ER sizes for CoroChuck™ 970: 8, 11, 20, 25, 32, 40 and 50.
  • ER size 50 has a square inside the adapter and should be used with the largest tap (M48). The collet that will be used with this large tap will be a collet without a square.
  • For HSK 63 and HSK 100, it is possible to use MQL on ER sizes 20 and 25.

Design Coromant Capto®
Coromant EH ​ISO Cone (ISO, MAS-BT, CAT-V)BIG-PLUS (ISO, MAS-BT, CAT-V) HSKCylindrical shank Weldon
SynchroFlex®C3, C4, C5, C6, C8, C10​25​30, 40, 50​​30, 40, 5063, 100​​12, 16, 20​16, 20, 25, 25A, 40
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