Kennametal 1161896 CCMT21.52LF KC730 Turning Insert

Product Description

The KENNAMETAL 1161896 is a solid carbide turning insert in the CCMT21.52LF geometry, coated with TiN via a PVD process and graded KC730. It is designed for single-point turning, facing, and boring operations on CNC lathes and manual turning centers. The insert features an 80-degree diamond (rhombic) shape with a neutral hand orientation, a positive rake angle of 5 degrees, a 7-degree relief angle, and a honed cutting edge. The LF chip breaker is optimized for finishing and light machining passes. With 2 usable cutting edges per insert and screw-on mounting, this insert is a standard choice for machinists and CNC programmers working in production and job-shop environments.

This insert is suited for finish turning and light material removal on steel, stainless steel, cast iron, and superalloys including titanium. The KC730 grade delivers high wear resistance with moderate toughness, making it effective across a range of cutting conditions where dimensional accuracy and surface finish are the priority. The LF chip breaker geometry controls chips efficiently at lower depths of cut, reducing built-up edge risk on difficult-to-machine materials. Typical applications include OD turning, facing passes, and internal boring on parts requiring tight tolerances.

Key Features

• CCMT21.52LF geometry: 80-degree diamond shape, neutral hand, positive rake, 7-degree relief angle
• KC730 grade with TiN PVD coating for high wear resistance on steel, stainless steel, and cast iron
• LF chip breaker optimized for finishing and light machining operations
• 2 cutting edges per insert with screw-on holding method for secure, repeatable seating
• Honed cutting edge style for reduced cutting forces and improved surface finish
• Maximum depth of cut of 0.049 inches (1.25 mm), suited for light finishing passes
• Conforms to ANSI and ISO standards (ANSI: CCMT2152, ISO: CCMT060208)

Compatibility

Designed for use in screw-on CCMT-style toolholders conforming to ANSI insert code CCMT2152 and ISO insert code CCMT060208. Compatible with turning, facing, and boring applications on steel, stainless steel, cast iron, superalloys, and titanium workpieces.

Installation Notes

Installation is performed by licensed machinists or CNC tool setup technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert fully in the toolholder pocket and secure with the clamping screw to the toolholder manufacturer's specified torque range before running. Inspect the cutting edge and chip breaker for chips or damage before each use; a damaged edge should not be run.