Kennametal 6178236 Indexable Drill Insert Dftgd KC7140

Product Description

The KENNAMETAL 6178236 is a carbide indexable drill insert designed for use in indexable drill tooling systems. Featuring an 84-degree trigon shape with a GD chipbreaker and KC7140 manufacturer grade, this insert is finished with a PVD-applied TiN coating for wear resistance and extended tool life. The neutral hand orientation makes it compatible with both left- and right-hand drill bodies. With an inscribed circle of 15.00 mm, a corner radius of 0.85 mm, and an insert size designation of 090508, this insert is suited for precision drilling operations in metalworking environments. Installation is handled by machinists and tool room technicians working with modular drill systems.

This insert is used in industrial drilling applications requiring consistent hole quality and reliable chip control. The GD chipbreaker geometry is suited for a range of workpiece materials where controlled chip formation is critical. Typical installation scenarios include production machining on CNC machining centers and drill presses where indexable tooling is used to reduce downtime compared to regrindable solid tooling. The TiN PVD coating adds surface hardness and reduces built-up edge in ferrous and non-ferrous applications.

Key Features

• 84-degree trigon insert shape with GD chipbreaker for controlled chip evacuation
• KC7140 carbide grade with PVD-applied TiN coating for wear resistance
• Neutral hand design fits standard indexable drill bodies without orientation restriction
• Inscribed circle of 15.00 mm and corner radius of 0.85 mm for precise fitment
• Insert size 090508 for straightforward cross-referencing and replacement ordering
• Hole diameter of 5.5 mm for secure clamping in compatible drill bodies

Compatibility

Designed as an OEM-style replacement indexable drill insert for KENNAMETAL DFT-style indexable drill bodies requiring the 090508 insert size with GD chipbreaker geometry.

Installation Notes

Installation is performed by qualified machinists or tool room personnel. Always power down and lock out the machine before indexing or replacing inserts. Use the appropriate torx or hex key to the tool manufacturer's specified clamping procedure and verify the insert seats flush with no rocking before resuming operation. Handle carbide inserts with care to avoid chipping cutting edges prior to use.