Iscar 5604729 Milling Insert T490 Lnmx 0804PN-R IC928

Product Description

The ISCAR 5604729 is a solid carbide milling insert carrying the ANSI designation T490 LNMX 0804PN-R IC928, designed for high-performance indexable milling in the HELITANG T490 cutter series. The insert features a butterfly (LNMX) shape with a helical cutting edge style and a TiAlN coating applied via PVD process. Grade IC928 is engineered for wear resistance and thermal stability under demanding cutting conditions. With four usable cutting edges on a double-sided geometry, this insert maximizes tool life per piece. The maximum depth of cut reaches 0.3150 inches, and the inscribed circle measures 0.1670 inches. A negative rake angle and 90-degree included angle suit shoulder and face milling operations on a range of metallic workpiece materials.

This insert is intended for use in professional CNC milling applications across metalworking shops, job shops, and production machining environments. Primary workpiece materials include steel (P), stainless steel (M), and superalloys and titanium (S), covering a broad range of ISO material groups. The chip breaker designation R and neutral hand geometry make it adaptable to a variety of cut directions and programming approaches. It is held in the cutter body by screw clamping and is compatible with T490 LNK08 cutter bodies within the HELITANG T490 series. Machinists and CNC tooling technicians performing shoulder milling, face milling, or ramping operations on ferrous and exotic alloys will find this insert appropriate for their applications.

Key Features

• TiAlN coating via PVD process for elevated heat and wear resistance
• Four cutting edges on a double-sided insert body to maximize cost-per-edge value
• Helical cutting edge style reduces entry forces and vibration during milling
• IC928 grade suited for steel, stainless steel, superalloys, and titanium (ISO P, M, S)
• Negative rake, 90-degree geometry for positive axial engagement in shoulder milling
• Screw-clamp holding method provides rigid, repeatable insert positioning

Compatibility

Compatible with T490 LNK08 cutter bodies in the HELITANG T490 series. Conforms to ANSI and ISO 13399 standards. Insert size code 490 with an inscribed circle range of 0.0000 to 0.2500 inches and a length range of 0.0000 to 0.3200 inches.

Installation Notes

Installation is performed by qualified CNC machinists or tooling technicians. Before indexing or replacing inserts, ensure the machine spindle is fully stopped and locked out per facility lockout/tagout procedures. Use the correct torx or hex key specified by the cutter body manufacturer to achieve proper screw-clamp torque without over-tightening. Inspect the insert pocket seat and clamping screw for chips or damage before seating a new insert.