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Heavy Metal Bar Holders

Heavy metal boring bars provide higher rigidity and dampening of vibration. Collis boring bar holders are best suited for machining bores of 6:1 length over diameter ratio.
  • Traverse ground tapers
  • Hardened RC52-56
  • Set screw included
  • Exceeds ANSI standards
  • Thru coolant capability
  • Concentricity < 0.0002"
  • AT3 taper accuracy and better

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Item #Shank Taper ID (A) OD (B) Proj. Length (C) Depth (D) Set Screws Concentricity