Sandvik Coromant 5734678 Milling Insert Lpmh 2040

Product Description

The SANDVIK COROMANT 5734678 is a solid carbide milling insert in the LPMH series, grade 2040, designed for indexable milling tool bodies that accept screw-held inserts. It features a CVD-applied multilayer coating of TiCrN, Al2O3, and TiN, delivering heat and wear resistance in demanding cut conditions. The insert is rectangular in shape with a 90-degree included angle, a positive rake geometry, and two cutting edges. Key dimensions are 0.562 inches inscribed circle, 0.85 inches length, and 0.25 inches thickness. Corner radius measures 0.0394 inches (1.00 mm). This insert is installed by machinists and CNC tooling technicians working in production milling environments.

The 5734678 is suited for milling steel, stainless steel, superalloys, and titanium, corresponding to ISO material groups P, M, and S, with a material grade classification of P45, M40, and S30. It is a right-hand insert with a positive rake and an MM chip breaker configuration. Typical applications include face milling, shoulder milling, and profile milling operations on CNC machining centers where tool life and chip control on difficult-to-machine alloys are priorities. The insert holds to ANSI and ISO standards under catalog designation LPMH 25 06 10-MM 2040.

Key Features

• CVD multilayer coating: TiCrN, Al2O3, and TiN for thermal and wear resistance
• Solid carbide substrate, grade 2040, rated for P45, M40, and S30 material groups
• Positive rake geometry with 11-degree relief angle reduces cutting forces
• MM chip breaker geometry supports chip control on stainless steel, superalloys, and titanium
• Two cutting edges per insert; single-sided design with right-hand orientation
• Screw-held mounting method; compatible with LPMH-series insert pockets

Compatibility

Designed for use in LPMH-series milling tool bodies that accept size 25 screw-held inserts with insert size code 250610. Conforms to ANSI and ISO standards under the designation LPMH 25 06 10-MM 2040. Verify pocket geometry and insert size code against the tool body specification before installation.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct Torx or hex key as specified by the tool body manufacturer to seat and torque the clamping screw — do not over-tighten, as carbide inserts are brittle and can fracture under excessive clamp load. Inspect the insert pocket seating surface and clamp for wear or debris before installing a new insert.