Sandvik Coromant 5743979 Milling Insert R245 Solid Carbide

Product Description

The SANDVIK COROMANT 5743979 is a square-shaped, single-sided solid carbide milling insert designed for use in R245 series face milling and shoulder milling cutter bodies. Carrying manufacturer grade 1010 with a PVD-applied TiAlN coating, this insert is engineered for cutting cast iron and hard materials where wear resistance and edge stability are priorities. The 12T3 insert size code reflects an inscribed circle of approximately 0.5276 inches and a thickness of 0.1563 inches. With four cutting edges and a 15-degree positive rake angle, it delivers efficient chip evacuation and reduced cutting forces. A licensed machinist or tooling technician is the typical end user for this insert.

This insert fits R245-series milling cutter bodies and is suited for face milling and light shoulder milling operations on cast iron and hard workpiece materials in both production and job-shop environments. The PM chip breaker geometry supports stable cuts at moderate to high feed rates. Its right-hand orientation and screw-clamping holding method make it compatible with standard R245 cutter pockets. The ANSI and ISO designation for this insert is R245-12 T3 M-PM 1010, which can be cross-referenced directly when sourcing replacements or verifying cutter pocket compatibility.

Key Features

• Solid carbide substrate with PVD TiAlN coating for wear resistance on cast iron and hard materials
• Four usable cutting edges per insert, maximizing value per piece
• 15-degree positive rake angle reduces cutting forces and heat generation
• PM chip breaker geometry supports consistent chip control at moderate to high feed rates
• Corner rounded cutting edge style with a 0.0591-inch (1.50 mm) corner radius
• Maximum depth of cut: 0.2559 inches (6.50 mm)

Compatibility

Designed for use with Sandvik Coromant R245-series milling cutter bodies. ANSI and ISO designation R245-12 T3 M-PM 1010 should be verified against the cutter body pocket specifications before installation. Insert holding method is screw-clamp; confirm pocket condition and screw torque requirements per the cutter body documentation.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician with the spindle fully powered down and locked out per facility LOTO procedures. Inspect the cutter body pocket and seating surfaces for wear or debris before seating the insert. Use the cutter manufacturer's recommended torque driver for the clamping screw — do not overtighten by feel. Handle carbide inserts with care to avoid chipping the cutting edges prior to use.