Kennametal 5065660 Indexable Drill Insert Dfrld KCU40

Product Description

The KENNAMETAL 5065660 is a solid carbide indexable drill insert designed for use in indexable insert drills in precision metal-cutting applications. The insert carries the DFRLD designation, combining an insert style of DFR with an LD chipbreaker geometry. It is coated via PVD process with a TiN/TiAlN multilayer coating, which provides heat resistance and edge wear protection during high-speed drilling operations. With an inscribed circle of 8 mm (0.3150 inches) and a thickness of 0.1480 inches, this is a compact peripheral or center insert suited for demanding hole-making in ferrous and nonferrous workpieces. Licensed machinists and CNC operators are the primary installers of this insert type.

This insert is used in indexable drill toolholders requiring DFRLD-style inserts in the KCU40 grade. KCU40 is a KENNAMETAL carbide grade formulated for applications that demand toughness combined with wear resistance. Typical use cases include production drilling on CNC machining centers and turning centers in job shop, aerospace, and general metalworking environments. The neutral hand designation means this insert can be seated without a preferred cutting direction, giving it flexibility across multiple toolholder configurations.

Key Features

• PVD-applied TiN/TiAlN coating for extended tool life and thermal resistance
• LD chipbreaker geometry promotes controlled chip formation during drilling
• Neutral hand insert style fits multiple toolholder orientations
• 8 mm inscribed circle with 0.40 mm (1/64 inch) corner radius for precise edge geometry
• Insert size designation 040304 for direct cross-reference and toolholder matching
• Solid carbide substrate in KCU40 grade balances toughness and edge wear resistance

Compatibility

Designed for use in KENNAMETAL indexable drill toolholders accepting DFRLD insert style in the 040304 insert size. Verify toolholder pocket geometry and insert seat specifications before installation.

Installation Notes

Insert seating and torque should follow the toolholder manufacturer specifications for the applicable pocket style. Ensure the machine spindle is fully stopped and the tool is secured in a vise or tool block before indexing or replacing inserts. Use the correct T-handle torx or hex key driver sized for the insert clamping screw to avoid stripping the seat. Inspect the pocket for debris or damage each time the insert is changed.