Kennametal 3760293 CPMT3252LF KCM25 Turning Insert

Product Description

The KENNAMETAL 3760293 is a solid carbide turning insert in the CPMT3252LF geometry with KCM25 grade designation. It carries a multilayer CVD coating of TiN, TiCN, and Al2O3 applied via MTCVD process, delivering a combination of wear resistance and toughness suited for steel and stainless steel applications. The insert measures 9.67 mm in length with a 3/8-inch inscribed circle and a 1/32-inch corner radius. Geometry is 80-degree diamond with a positive rake angle of 5 degrees and an 11-degree relief angle. The LF chip breaker is optimized for finishing and light machining operations. Two cutting edges are available per insert, and the screw-on holding method provides secure clamping during interrupted or continuous cuts.

This insert is intended for turning, facing, and boring operations on steel, stainless steel, and superalloys including titanium. It is suited for both residential shop and industrial production environments where tight-tolerance finishing passes are required. The KCM25 grade characteristics emphasize high toughness on steel (P) workpieces and moderate wear resistance with toughness on stainless steel (M) workpieces. A neutral hand orientation allows use in a broad range of toolholders. Machinists and CNC operators performing finishing passes with light depths of cut will find the LF geometry well matched to surface-finish requirements in those material families.

Key Features

• KCM25 grade with multilayer CVD TiN/TiCN/Al2O3 coating for steel and stainless steel machining
• 80-degree diamond (C) insert shape with positive rake and positive side clearance for reduced cutting forces
• LF chip breaker geometry designed for finishing and light machining passes
• Maximum depth of cut of 1.25 mm, suited to fine finishing operations
• Two cutting edges per insert with screw-on holding method for positive insert location
• Conforms to ANSI insert code CPMT3252 and ISO insert code CPMT09T308

Compatibility

Designed as an OEM-style replacement or standard-fit insert for CPMT-style screw-on toolholders accepting a 3/8-inch inscribed circle, 80-degree diamond geometry per ANSI CPMT3252 and ISO CPMT09T308 standards.

Installation Notes

Insert installation should be performed by a qualified machinist or CNC operator with the machine in a locked-out, zero-energy state before any tool change. Seat the insert fully against all pocket walls and tighten the clamping screw to the toolholder manufacturer's specified torque using the appropriate Torx or hex key. Inspect the cutting edge and chip breaker groove for chips or debris before seating. Follow applicable shop safety procedures and machine-specific tool-change protocols when replacing inserts at the spindle.