Sandvik Coromant 7860567 Turning Insert TNMM433-PR 4415

Product Description

The SANDVIK COROMANT 7860567 is a solid carbide turning insert in the T-Max P series, designed for external and internal turning operations on CNC lathes and turning centers. This TNMM433-PR insert carries the manufacturer grade 4415 and features a CVD-applied multilayer coating of Al2O3, TiCN, and TiN for wear resistance and thermal stability at elevated cutting speeds. The triangular insert shape provides three cutting edges per insert. With a 1/2 inch inscribed circle and a 1.19 mm (0.0469 inch) corner radius, it is suited for moderate to heavy roughing and semi-finishing passes. Licensed machinists and CNC operators working in production turning environments are the primary installers.

This insert is rated primarily for machining steel (ISO material group P) and secondarily for cast iron (ISO material group K). The PR chip breaker geometry is optimized for positive chip control during continuous and interrupted cuts in steel components. It is a neutral-hand insert, making it interchangeable across right- and left-hand toolholders that accept the TNMM form factor. Typical applications include shaft turning, flange facing, and general-purpose turning on medium to large lathes in job shop and production environments.

Key Features

• CVD-coated Al2O3, TiCN, and TiN multilayer coating for high-speed steel cutting with thermal protection
• Triangular insert shape with three usable cutting edges for extended tool life per insert
• PR chip breaker geometry engineered for controlled chip evacuation in steel and cast iron
• 1/2 inch inscribed circle with 0.0469 inch corner radius for versatile roughing and semi-finishing
• Compatible with clamp and screw holding methods in standard TNMM toolholders
• Neutral hand orientation fits both right- and left-hand toolholder configurations

Compatibility

Designed for use in toolholders accepting TNMM-style inserts with a 1/2 inch inscribed circle. Compatible holding methods include clamp and screw styles. ISO code TNMM 22 04 12-PR 4415 and industry standard number TNMM 22 04 12-PR 4415 confirm cross-reference fitment. Catalog reference TNMM 433-PR applies.

Installation Notes

Insert installation should be performed by a qualified machinist or CNC setup technician with the machine in a full lockout/tagout state before any toolholder access. Seat the insert fully in the pocket and verify the clamping screw or clamp engages the hole (0.2030 inch diameter) correctly before torquing. Inspect the insert pocket and seating surface for chips or debris prior to indexing to a fresh cutting edge. Discard the insert when all three cutting edges show wear beyond acceptable limits rather than attempting to regrind carbide inserts.