Kennametal 5515890 Milling Insert KC522M Solid Carbide

Product Description

The KENNAMETAL 5515890 is a solid carbide milling insert in the LNGU series, designed for indexable milling applications in demanding metal-cutting environments. Coated with AlTiN via a PVD process, this insert provides heat resistance and wear protection at the cutting edge. It carries a KC522M manufacturer grade and features a GE chip breaker geometry with a chamfered and honed cutting edge style. Four cutting edges are available per insert, and the right-hand configuration suits standard LNGU toolholder setups. The positive rake angle and 0-degree relief angle are suited for high-efficiency face and shoulder milling on a range of workpiece materials.

This insert is appropriate for milling steel, stainless steel, cast iron, superalloys, and titanium, corresponding to ISO material groups P, M, K, and S. It is compatible with the Mill 4-15 cutter series and is held in place by a screw clamping method. Typical applications include production milling in job shops and manufacturing facilities where consistent tool performance across multiple workpiece materials is required. Licensed machinists and CNC operators are the primary installers and users of this insert.

Key Features

• AlTiN coating applied via PVD process for improved heat and wear resistance
• 4 cutting edges per insert for extended tool life and cost efficiency
• GE chip breaker with chamfered and honed edge for controlled chip formation
• Positive rake geometry suited for reduced cutting forces on steel and superalloys
• Screw-held LNGU insert style with right-hand orientation
• Meets ANSI and ISO standards; ANSI code LNGU542SRGE, ISO code LNGU15T608SRGE

Compatibility

Compatible with the Mill 4-15 cutter series. Insert conforms to ANSI code LNGU542SRGE and ISO code LNGU15T608SRGE. Designed for use in LNGU-style indexable milling toolholders requiring a size 5, insert size code 542 insert.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Always power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate Torx or hex key to secure the clamping screw to the toolholder specification; do not overtighten. Inspect the insert pocket and clamping screw for wear or debris before seating the new insert.