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SK40 Shrink Fit Chucks

Ultra high quality SK40 DIN69871 heat shrink chucks, made in Germany by WTE, part of the Mapal Group. 

  • Balanced to 25,000RPM G2.5 (40,000RPM on request), run-out <0.003mm (3μm).
  • Geometries: Standard, Slim & KKB Coolant Bores
  • Suitable for clamping carbide or HSS shanks with h6 tolerance
  • With axial length pre-setting screw
  • Gauge lengths up to 200mm


All WTE heat shrink chucks are made from high strength hot work steel which is free from distortion due to optimum heat treatment. Long shrink life and ultimate accuracy guaranteed.