Sandvik Coromant 5749679 Milling Insert Grade 235 Sekr

Product Description

The SANDVIK COROMANT 5749679 is a solid carbide milling insert in the SEKR series, designed for use in indexable milling operations on steel and stainless steel workpieces. Manufactured to grade 235 with a CVD-applied TiCN and TiN dual coating, this insert delivers wear resistance suited to demanding cutting environments. It features a square shape with a 90-degree included angle, four cutting edges, and a corner radius of 0.0591 inches (1.50 mm). The positive rake geometry at 15 degrees and the WM chip breaker promote controlled chip flow during face milling, shoulder milling, and similar operations. Installation and replacement are handled by licensed machinists and CNC setup technicians.

This insert is intended for use in milling cutters that accept SEKR-style square inserts with a 12.70 mm inscribed circle (0.5000 inches). It is suited to both residential machine shops and commercial production environments where P- and M-category workpiece materials — steel and stainless steel — are regularly machined. The insert size code is 1203, and it carries ANSI and ISO designations of SEKR 12 03 AZ-WM 235, making direct catalog cross-referencing straightforward. The neutral hand orientation allows use in standard cutter bodies without handedness restrictions. Maximum depth of cut reaches 0.2520 inches (6.40 mm).

Key Features

• Solid carbide substrate with CVD-applied TiCN and TiN dual coating for extended tool life on steel and stainless steel
• Four cutting edges per insert with single-sided geometry, maximizing insert value per unit
• Positive 15-degree rake angle reduces cutting forces and heat generation at the workpiece interface
• WM chip breaker geometry promotes controlled chip formation across a range of feed rates
• Corner radius of 0.0591 inches (1.50 mm) provides edge strength while reducing surface stress concentrations
• ANSI and ISO dual-standard designation (SEKR 12 03 AZ-WM 235) supports cross-platform cutter compatibility verification

Compatibility

Designed for use in indexable milling cutter bodies that accept SEKR-series square inserts with a 1203 insert size code and a 0.5000-inch inscribed circle. Verify cutter body pocket specifications against ANSI code SEKR 12 03 AZ-WM 235 before installation.

Installation Notes

Insert replacement is performed by qualified machinists or CNC tooling technicians. Before indexing or replacing inserts, ensure the machine spindle is fully stopped, locked out, and the cutter body is secured in a vise or fixture. Use the correct torx or hex key specified by the cutter body manufacturer for the clamping screw — do not substitute tools. Inspect the pocket seat and clamping components for wear or debris before seating the new insert.