Kennametal 1161852 Turning Insert TCMT3252MF KC730 Carbide

Product Description

The KENNAMETAL 1161852 is a TCMT-style solid carbide turning insert with a KC730 grade and PVD-applied TiN coating. It carries an ANSI insert code of TCMT3252 and an ISO code of TCMT16T308. The insert features a 60-degree triangular shape with a neutral hand orientation, a 3/8-inch inscribed circle, a 1/32-inch corner radius, and a 7-degree relief angle. The MF chip breaker geometry is engineered for finishing and medium machining operations. With three usable cutting edges and a screw-on holding method, this insert delivers consistent performance in steel and stainless steel turning applications. Licensed machinists and CNC turning specialists are the primary installers.

This insert is suited for turning, facing, and boring operations on CNC lathes and manual turning centers. Its KC730 grade targets steel (P), stainless steel (M), and cast iron (K) workpiece materials, offering high wear-resistance to moderate wear-resistance with toughness across those categories. Superalloys and titanium are listed as secondary workpiece materials. The positive rake geometry and chamfered-and-honed cutting edge reduce cutting forces and improve surface finish at light-to-medium depths of cut, making it appropriate for finish-pass work on close-tolerance components.

Key Features

• KC730 grade with PVD TiN coating for high wear-resistance on steel, stainless steel, and cast iron
• MF chip breaker geometry optimized for finishing and medium machining operations
• Three cutting edges with positive rake and chamfered-and-honed edge prep
• Screw-on insert holding method for secure, repeatable seating
• Neutral hand orientation for flexible toolholder compatibility
• Maximum depth of cut of 0.0492 inches (1.25 mm) supports controlled finish-pass applications

Compatibility

Designed for use in TCMT-style screw-on toolholders conforming to ANSI and ISO standards for triangular turning inserts with a 3/8-inch inscribed circle and 5/32-inch insert thickness.

Installation Notes

Insert installation and replacement should be performed by a qualified machinist or CNC tooling technician with the machine in a full stop and all axes locked out per facility lockout-tagout procedures. Use the correct torx or hex key to tighten the clamp screw to the toolholder manufacturer's specified procedure — do not overtighten. Verify insert seating and pocket cleanliness before each use. Dispose of worn inserts per applicable shop safety and sharps-handling protocols.