Каталог оснастка Dormer Pramet 2016 - страница 258

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HSK (hollow taper shanks)

HSK-toolholders DIN 69893

The hollow taper shank (HSK) has become popular since its standardization as an interface between machine spindle and tool.

HSK benefits to the user include:

  • High static and dynamic rigidity
  • High precision axial and radial reproducibility
  • High tool change accuracy and repeatability
  • High speed machining performance
  • Short tool changing times
  • Coding and identification
  • Coolant feed

Balancing recommendations and r.p.m. limits

Pramet HSK-toolholders are generally pre-balanced to G 6.3/15,000 rev./min. Fine balancing on request is possible.

Because the rotational speed is the largest following r.p.m. limits for HSK interfaces have
influencing factor together with the limits regar-been recommended as guidelines within the HSK
ding the spindle or spindle bearing interface, the standards:
HSK-A 63 to 25,000 rev./min
HSK-A 100 to 16,000 rev./min
Depending on the tool, it may be necessary to if machine and spindle manufacturers are taken into
balance both the tool holder and tool when applyingconsideration and it is possible to define tools and
the maximum r.p.m. Exact limits can only be deter minedprojecting lengths.