Sandvik Coromant 5732258 DNMG331-MF 1105 Turning Insert

Product Description

The SANDVIK COROMANT 5732258 is a solid carbide turning insert designed for precision external and internal turning operations on CNC lathes and turning centers. It carries the ISO designation DNMG 11 04 04-MF 1105 and features a 55-degree diamond insert shape with a TiAlN coating for improved wear resistance and thermal stability at elevated cutting temperatures. The MF chip breaker geometry is optimized for finishing cuts, producing controlled chip formation at light to moderate depths of cut. The insert measures 0.442 inches in length with a 3/8-inch inscribed circle and a 1/64-inch corner radius, making it well suited for profiling operations requiring close tolerances.

This insert is intended for use in turning applications where a positive-geometry, light-cutting action is required, typically in the machining of steels and other ferrous materials at finishing parameters. The DNMG style and MF chip breaker geometry make this insert appropriate for residential machine shops and industrial production environments alike. It is commonly installed in DNMG-compatible toolholders using a clamp-and-pin holding method, providing secure seating during high-precision finishing passes. The manufacturer grade 1105 is a CVD or PVD-coated carbide substrate selected for general-purpose steel turning at moderate to high cutting speeds.

Key Features

• TiAlN coating provides thermal and oxidation resistance for extended tool life in steel turning
• 55-degree diamond insert shape (Insert Shape Code: D) enables profiling and contour turning with good clearance
• MF chip breaker geometry engineered for finishing operations with controlled chip evacuation
• Clamp-and-pin holding method (DNMG style) ensures rigid, repeatable insert seating
• 1/64-inch corner radius supports fine surface finish requirements
• Relief angle of 0 degrees with N clearance code and M tolerance code for consistent dimensional repeatability

Compatibility

Designed for use in DNMG-style toolholders that accept a 331 insert size with a 0.150-inch hole diameter and clamp-and-pin holding. Verify toolholder pocket geometry and ISO designation DNMG 11 04 04 compliance before installation.

Installation Notes

Installation is performed by a machinist or CNC tooling technician. Power down and lock out the machine before changing inserts. Seat the insert fully into the toolholder pocket and confirm the clamp-and-pin mechanism is fully engaged before resuming cutting operations. Inspect the insert seat and shim for debris or damage that could affect insert orientation and dimensional accuracy.