Kennametal 5542249 Round Milling Insert KCPM40 Carbide

Product Description

The KENNAMETAL 5542249 is a solid carbide round milling insert carrying ISO designation RCGT250900SHFJ and ANSI code RCGT86SHFJ. It is manufactured to the KCPM40 grade and features a dual PVD coating of TiAlN and AlCrN, which provides thermal resistance and edge durability during aggressive milling operations. The insert has a 1.0000-inch inscribed circle, a 0.3750-inch thickness, and a positive rake geometry with a 7-degree relief angle. Four cutting edges are available per insert. The HF chip breaker and chamfered, honed cutting edge style make this insert well suited for finishing and semi-finishing applications in ferrous and high-temperature alloy materials.

This insert is designed for milling steel, stainless steel, superalloys, and titanium workpieces, corresponding to ISO material groups P, M, and S. It is compatible with the KSRM cutter series and is intended for use by machinists and CNC tool-room technicians in both production and job-shop environments. The neutral hand designation allows use in standard toolholder orientations. Typical applications include face milling, shoulder milling, and contour milling on CNC machining centers where consistent surface finish and predictable tool life are required.

Key Features

• Solid carbide substrate with PVD-applied TiAlN and AlCrN dual coating for extended thermal and wear resistance
• KCPM40 grade optimized for steel, stainless steel, superalloys, and titanium (ISO P, M, S materials)
• Round RCGT insert shape provides 4 usable cutting edges and full 360-degree included angle
• Positive rake angle of 25 degrees with 7-degree relief reduces cutting forces on workpiece
• HF chip breaker with chamfered and honed edge style suited for finishing and semi-finishing cuts
• Screw-held, single-sided insert with neutral hand for straightforward toolholder mounting

Compatibility

Designed for use with the KENNAMETAL KSRM cutter series. Conforms to ANSI standard RCGT86SHFJ and ISO standard RCGT250900SHFJ.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Always power down and lock out the spindle before seating or replacing inserts. Use the correct torque driver for the seating screw to ensure proper clamping without cracking the carbide substrate. Inspect the insert pocket and seating surface for debris or damage before fitting a new insert.