Kennametal 1191073 Carbide Drill Chamfer Insert CS5

Product Description

The KENNAMETAL 1191073 is a carbide drill chamfer insert designed for use with SEFAS-series drilling toolholders. It features a 45-degree chamfer angle and is manufactured from solid carbide with a Titanium Nitride (TiN) coating applied via PVD process. The TiN coating improves surface hardness and wear resistance, extending tool life in moderate-duty drilling and chamfering operations. This insert style designation is 3.42807 and carries the CS5 manufacturer grade. At approximately 0.0154 pounds per piece, it is a precision-ground, indexable insert suited for production environments where consistent chamfer geometry is required.

This insert is intended for metalworking applications where drill chamfering is performed in a single operation. Typical use cases include production drilling on CNC machining centers and drill presses in light to moderate cutting conditions. The SEFAS series platform is commonly used in aerospace, automotive, and general machining shops where repeatable chamfer angle control is critical. The CS5 grade with TiN coating is suited for use on steel and cast iron workpieces at recommended cutting parameters for coated carbide tooling.

Key Features

• 45-degree chamfer angle for consistent edge preparation in one pass
• CS5 carbide grade with PVD-applied Titanium Nitride coating for improved wear resistance
• Insert style 3.42807 fits SEFAS-series drill toolholders
• Indexable insert design supports quick changeover without regrinding
• Lightweight at 0.0154 pounds per insert for high-volume tooling setups

Compatibility

Designed for use with SEFAS-series drill chamfer toolholders accepting insert style 3.42807. Verify toolholder seat geometry and insert pocket dimensions before installation.

Installation Notes

This insert is installed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and locked out before indexing or replacing inserts. Use the correct torx or hex key specified by the toolholder manufacturer to achieve proper clamping torque without over-stressing the insert seat. Inspect the insert pocket for debris or damage before seating a new insert.