Kennametal 1162776 TPU322 KC850 Carbide Turning Insert

Product Description

The KENNAMETAL 1162776 is a solid carbide triangular turning insert in the KENDEX series, designed for precision metal-cutting operations on CNC lathes and turning centers. This insert carries a multilayer CVD coating of TiC, TiCN, and TiN under the KC850 grade designation, which delivers moderate wear resistance and toughness across a broad range of workpiece materials. The insert measures 16.5 mm (0.6496 inches) in length with a 3/8-inch inscribed circle and a 1/32-inch corner radius. With three usable cutting edges and a flat-top chip breaker geometry, it offers a cost-effective solution for general turning, facing, and boring operations. Licensed machinists and CNC operators install this insert using standard clamp-style toolholders.

This insert is suited for machining steel, stainless steel, cast iron, and special or super alloys in moderate to high toughness application scenarios. The neutral hand orientation and positive rake and side clearance geometry make it adaptable to a variety of turning setups. Typical applications include external turning, facing passes, and light boring work on both manual and CNC equipment. The ANSI insert code is TPU322 and the ISO equivalent is TPU160308, allowing direct specification in standard tooling references.

Key Features

• KC850 grade with multilayer CVD TiC, TiCN, and TiN coating for extended tool life on steel and stainless
• Triangular insert shape (60-degree included angle) provides three cutting edges per insert
• Flat-top chip breaker with honed cutting edge style for controlled chip formation
• Positive rake and positive side clearance geometry reduces cutting forces
• Multi-use application across turning, facing, and boring operations
• Conforms to ANSI and ISO insert standards (ANSI TPU322, ISO TPU160308)

Compatibility

Designed for use in KENDEX series clamp-style toolholders accepting TPU322 triangular inserts. Fits standard toolholders specified to ANSI code TPU322 or ISO code TPU160308. Verify toolholder pocket geometry, clearance code P, and tolerance code U before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torque wrench and clamp screw per the toolholder manufacturer specification to secure the insert without cracking the carbide substrate. Inspect the pocket seat and clamp for wear or debris before seating a new insert.