Sandvik Coromant 8019521 Rcmt Turning Insert 3/4 in Ic

Product Description

The SANDVIK COROMANT 8019521 is a round carbide turning insert in the RCMT (INCH) series, designated by ISO code RCMT 19 06 00 4425. It carries a tri-layer CVD coating of TiCN, Al2O3, and TiN applied over a solid carbide substrate, delivering wear resistance and thermal stability during turning operations. The insert has a 3/4-inch inscribed circle, a 1/4-inch thickness, and a neutral hand orientation with no chip breaker (code 00). The 4425 grade is suited for steel turning applications. This insert is installed by machinists and CNC operators on indexable turning toolholders in production and job-shop environments.

This insert is intended for use on steel workpieces as its primary application, with secondary capability indicated by workpiece material code K. The neutral hand makes it adaptable to both right-hand and left-hand toolholder setups without requiring a mirrored insert. It fits RCMT-style clamp-and-screw toolholders using insert size code 1906. Typical use cases include external turning, facing, and profiling on CNC lathes and manual turning centers where a round insert profile is specified to distribute cutting forces evenly and extend tool life.

Key Features

• CVD tri-layer coating: TiCN, Al2O3, TiN for thermal and abrasion resistance
• Solid carbide substrate, grade 4425, optimized for steel turning
• Round insert shape (code R) with 3/4-inch inscribed circle for broad depth-of-cut flexibility
• Neutral hand orientation compatible with both right-hand and left-hand holders
• Clamp and screw holding method with clearance code C and tolerance code M
• No chip breaker (code 00) for smooth continuous-cut applications

Compatibility

Designed as an OEM-style replacement turning insert for RCMT-style indexable toolholders accepting a 3/4-inch inscribed circle round insert with insert size code 1906 and a clamp-and-screw holding method.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque driver for the clamping screw to avoid cracking the carbide substrate — do not overtighten by hand estimation alone. Inspect the toolholder pocket and clamping components for wear or debris before seating the new insert.