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More Information
Mfg SKU #202-6627
Collet CategoryER Collets
collet seriesER20
collet size1/2
collet size rangeFixed Size
TIR (inch)0.0003
Coolant Pressure PSI2000


  • ER coolant collet does not have a collapse range, gripping onto undersized shank would introduce leakage
  • Recommended to be used with cylindrical with no flats. The full length of the shank should be inserted into the collet to prevent potential leakage
  • Collets are sealed up to 2,000 PSI
  • On size 1/8" and larger the runout is 0.0003"
  • No coolant discs to install, coolant is sealed by the use of special slits in the collet
  • Rubber coolant collets tend to deteriorate quickly, these collets do not contain rubber
  • Made from Alloy spring steel and fully hardened
  • All critical surfaces are precision ground for accurate fit