Shrink Fit Holder

The shrink fit holder is suitable for high accuracy and high-speed machining operations. In this holder, the tool is gripped using the ‘interference fitment’ method. The bore diameter of the holder is slightly smaller than the shank diameter of the tool.

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Shrink Fit Holder

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Description

For placing the tool in this shrink fit holder an induction heating machine is required to heat the nose of the holder and expand its bore diameter. Nowadays with the advanced induction heat machines available this process is quite easily done within minutes. (BPTL also provides an economic model of Induction heat machines). Assembly of the tool and Shrink fit holder acts as a one-piece, this rigid design and absolute symmetry of form provide better run-out accuracies. Shrink fit holder has better gripping strength and run-out accuracies compared to the Hydraulic chuck. BPTL shrink-fit holders are all dynamically balanced and they can be rebalanced after inserting the tool; this rebalancing capability of Shrink fit holder makes it the best choice for this attribute compared to any other tool holding system in the market. This holder is most preferred for the critical machining operations in the fields of Medical and Aerospace. BPTL provides shrink-fit holders in various tapers such as BT (MAS403/JIS B 6339), DV (DIN 69871), CV (ANSI B5.50/ISO 7388), and HSK (DIN 69893). Shrink fit holders of the CV (ANSI B5.50/ISO 7388) are available in both Inch and Metric dimensions. For machining in the tighter spaces, BPTL also provides a Slim-line design of Shrink fit holder on a request basis.


Advantages of Shrink Fit Holder

  • Symmetrical and balanced design
  • TIR within 0.003 mm at the nose
  • Slim-line nose design available on request
  • CAT Shrink fit holders available in Metric and Inch sizes
  • Through tool coolant capability
  • Flange through coolant form B/AD available on request
  • Dynamically balanced to G6.3@ 15,000 rpm
  • G2.5@ 20,000 – 30,000 rpm available on request

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