Wirtgen America

HT22 Quick-Change Toolholder System

The HT22 quick-change toolholder system is designed to increase the service life of the milling drum.

  • Significantly enlarged contact areas between upper and lower parts
  • High cutting forces are reliably transferred to the lower part of the quick-change toolholder system, substantially increasing the useful life of the milling drum
  • Larger shank cross-section and the optimized shank geometry increase the strength of the shank, thus providing greater resistance to undesired deformation
  • Maximum longitudinal wear of the upper part of the toolholder has been doubled in relation to that of the conventional version
  • Higher pretensioning forces resulting from an optimized screw position provide for the reliable system pretensioning of the upper part in the toolholder's lower part
  • Service intervals have now been extended from 250 hours to 500 hours because of overall more robust construction
  • Available on all new Wirtgen cold milling machines 

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