Kennametal 3755635 CPMT2151LF KCM15 Turning Insert

Product Description

The KENNAMETAL 3755635 is a solid carbide turning insert in the CPMT style, designated CPMT2151LF with a KCM15 manufacturer grade. It features a multilayer CVD coating consisting of TiCN and Al2O3 applied via MTCVD process, providing wear resistance on steel, stainless steel, superalloys, and titanium. The insert has an 80-degree diamond shape, a positive rake angle of 5 degrees, a relief angle of 11 degrees, and a honed cutting edge style. With an inscribed circle of 0.25 inches and a corner radius of 0.0156 inches, it is suited for light finishing passes. Installation uses the screw-on holding method. Licensed machinists and CNC operators install this insert in compatible screw-on toolholders for turning, facing, and boring operations.

This insert is intended for turning, facing, and boring applications on steel (material code P), stainless steel (material code M), and superalloys and titanium (material code S). The LF chip breaker geometry is designed for light finishing cuts with a maximum depth of cut of 1.25 mm (0.0492 inches). The neutral hand orientation allows flexible use in standard screw-on toolholder setups. It conforms to ANSI and ISO standards and carries material grade designations C2 and C3. The insert size code is 2151 and the industry standard number is CPMT2151LF, making cross-referencing to compatible toolholders straightforward.

Key Features

• KCM15 grade solid carbide with multilayer CVD TiCN and Al2O3 coating for extended tool life on steel and superalloys
• 80-degree diamond insert shape (shape code C) with positive rake for reduced cutting forces on finishing operations
• LF chip breaker geometry optimized for light finishing cuts up to 1.25 mm depth of cut
• Screw-on holding method with a 0.1142-inch hole diameter for secure, repeatable seating in compatible toolholders
• Honed cutting edge with a 0.0156-inch corner radius minimizes edge chipping on difficult-to-machine materials
• Two cutting edges per insert; neutral hand orientation suits a wide range of turning setups

Compatibility

Designed for use in CPMT-style screw-on toolholders conforming to ANSI and ISO standards for turning, facing, and boring. Compatible with workpiece materials designated P (steel), M (stainless steel), and S (superalloys and titanium) per ISO material classification. Verify toolholder seat geometry and screw thread size before installation.

Installation Notes

Installation is performed by machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert fully in the pocket and tighten the clamping screw to the toolholder manufacturer's specified torque using the appropriate Torx or hex key. Inspect the insert seat and screw for wear or debris before each insert change to maintain accurate positioning and prevent premature edge failure.