Seco 02505942 Milling Insert SPMX1904AP-75 F40M Carbide

Product Description

The SECO 02505942 is a solid carbide milling insert carrying the ANSI/ISO designation SPMX1904AP-75 in manufacturer grade F40M. It is a square-shaped, single-sided insert with a neutral rake angle, a T-Land cutting edge style, and four usable cutting edges. The insert measures 0.625 inches in length and width, with a nominal thickness of 0.187 inches and an inscribed circle of 0.625 inches. A PVD-applied TiAlN plus TiN dual coating provides thermal resistance and wear protection. The chip breaker designation is 75. The insert is held by screw clamping and is designed for use in SPMX-19 series milling toolholders. It is installed by machinists and toolroom technicians in production and job-shop milling operations.

This insert is suited for milling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. Primary workpiece material codes are P, K, and S per ISO classification. Secondary materials include cast iron and non-ferrous metal. The maximum depth of cut is 0.750 inches. Typical applications include face milling, shoulder milling, and general-purpose material removal where consistent edge life across difficult-to-machine alloys is required. The 11-degree relief angle and neutral rake geometry support both roughing and semi-finishing passes depending on feed and speed selection.

Key Features

• Solid carbide fine-grain substrate in manufacturer grade F40M for toughness and edge retention
• PVD-applied TiAlN plus TiN dual coating for elevated-temperature wear resistance
• Four cutting edges on a single-sided square insert maximize cost-per-edge value
• T-Land cutting edge style reduces chipping on interrupted cuts and entry into hard materials
• 11-degree relief angle with neutral rake and neutral hand for broad toolholder compatibility
• Maximum depth of cut of 0.750 inches supports aggressive material removal rates

Compatibility

Designed for use in SPMX-19 series milling toolholders that accept SPMX1904AP-75 screw-clamped inserts. Confirmed ANSI and ISO code: SPMX1904AP-75. Verify toolholder pocket geometry and screw torque specification against the toolholder manufacturer documentation before installation.

Installation Notes

Insert replacement and indexing should be performed by a qualified machinist with the machine powered down, spindle locked, and all stored energy released. Use the correct torque wrench and clamping screw specified by the toolholder manufacturer — do not estimate clamping torque by feel. Inspect the pocket seat and clamping screw threads for debris or damage before seating a new insert. Confirm runout and insert seating with a dial indicator before resuming production cuts.