Sandvik Coromant 6971862 R390 Milling Insert Carbide

Product Description

The SANDVIK COROMANT 6971862 is a solid carbide milling insert carrying the ANSI and ISO designation R390-17 04 64E-PM 1130. It is a single-sided, right-hand, parallelogram-shaped insert with a 90-degree included angle and a positive rake geometry. The insert measures 9.6 mm wide and 4.76 mm thick, with a 0.25 inch corner radius and two cutting edges. An AlTiCrN coating applied via PVD process enhances wear resistance and heat tolerance, extending tool life in demanding cuts. Licensed machinists and CNC tooling technicians install this insert into compatible R390-series face and shoulder milling cutter bodies.

This insert is designed for face milling, shoulder milling, and pocket milling applications where positive rake geometry and a robust corner radius are required. The PM chip breaker geometry suits a broad range of workpiece materials including steel, stainless steel, non-ferrous metals, superalloys, titanium, and hard materials. It supports a maximum depth of cut of 15.00 mm (0.5906 inches), making it suitable for both roughing and semi-finishing passes in production machining environments. It is typically used on CNC machining centers in job shop, aerospace, and general manufacturing settings.

Key Features

• AlTiCrN PVD coating rated for steel, stainless steel, non-ferrous metals, superalloys, titanium, and hard materials
• Positive rake angle of 17 degrees with corner-rounded cutting edge style for reduced cutting forces
• PM chip breaker geometry provides reliable chip control across multiple workpiece materials
• Maximum depth of cut of 15.00 mm supports both roughing and semi-finishing operations
• Right-hand, single-sided insert with screw-holding method for secure, repeatable seating
• Meets ANSI and ISO standards; ANSI and ISO code R390-17 04 64E-PM 1130

Compatibility

Designed for use with R390-series cutter bodies. The insert size code is 170464 and the cutter series compatibility is listed as R390. Verify cutter body seat specifications against insert dimensions before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician with the spindle fully stopped and machine in a locked-out, tagged-out state. Use the appropriate Torx or hex key driver specified by the cutter body manufacturer to seat the clamping screw — do not overtighten or use impact tools on insert screws. Inspect the cutter body pocket and seating surfaces for wear or debris before installing a fresh insert. Handle carbide inserts with care to avoid chipping the cutting edges prior to use.