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New Arrival-Crown-Type Back-Pull Drill Insert

New Arrival-Crown-Type Back-Pull Drill Insert

2025-11-17
1. Description

The crown-type back-pull drill insert is a replaceable insert designed for internal chamfering, reverse deburring, and back-side contour machining.
With a unique crown-shaped cutting edge, it provides excellent stability and smooth chip removal during back-pull operations.
It is widely used in precision machining fields such as medical devices, molds, automotive parts, and aerospace components.

2. Features
  • Back-pull cutting structure
    Enables reverse chamfering from the inside of the hole without flipping the workpiece.

  • Crown-style cutting geometry
    Enhances cutting stability and improves chip evacuation.

  • Replaceable insert design
    Reduces overall tooling cost and improves convenience.

  • High-performance materials
    Available in carbide, powder high-speed steel, or premium alloy steel for long tool life.

  • High dimensional accuracy
    Suitable for demanding CNC machining tasks requiring consistent tolerances.

3. Advantages
  • No need to turn the workpiece over, saving machining time.

  • Ideal for internal chamfering, back-side deburring, and special hole-form machining.

  • Excellent wear resistance and long service life.

  • Stable and smooth cutting performance in stainless steel, alloy steel, tool steel, and other difficult materials.

  • Clean surface finish and reduced burrs.

4. Applications
  • Medical device hole machining

  • Mold and die industry precision hole processing

  • Automotive component internal chamfering

  • Aerospace parts deburring

  • Any machining requiring internal or reverse-side chamfering