Sandvik Coromant 5724038 Turning Insert CCMT21.51UF

Product Description

The SANDVIK COROMANT 5724038 is a solid carbide turning insert designed for precision finishing operations on CNC lathes and turning centers. Part of the CoroTurn 107 series, it carries an ANSI insert code of CCMT21.51 and an ISO code of CCMT060204UF1515. The insert features a TiCN, Al2O3, and TiN multilayer coating applied via MTCVD process, delivering high wear resistance when cutting steel. With an 80-degree diamond (rhombic) shape, a 7-degree relief angle, and a UF chip breaker geometry optimized for finishing cuts, this insert produces tight tolerances and consistent surface finish on turned components.

This insert is intended for finishing applications on steel as its primary workpiece material, with stainless steel as a secondary application. It is suited for light to moderate depth-of-cut passes up to 6.05 mm on both production and job-shop turning setups. The screw-clamping hold-down method keeps the insert secure under consistent finishing loads. Licensed machinists and CNC turning technicians working in manufacturing, aerospace, energy, and general engineering environments are the primary installers and users of this insert.

Key Features

• CoroTurn 107 series UF chip breaker geometry optimized for steel finishing cuts
• MTCVD-applied TiCN, Al2O3, and TiN multilayer coating for high wear resistance in steel (P-grade) applications
• 80-degree diamond (rhombic) insert shape with positive side clearance for reduced cutting forces
• Corner radius of 0.40 mm (1/64 inch) for fine surface finish on finishing passes
• Two cutting edges per insert for extended tool economy
• Screw-clamping insert holding method for repeatable seating and secure clamping

Compatibility

Designed for use in CoroTurn 107 series toolholders that accept CCMT21.51 (ISO CCMT060204) screw-clamp turning inserts. Verify toolholder seat geometry and insert pocket dimensions before installation.

Installation Notes

Installation is performed by qualified CNC machinists or tooling technicians. Before changing inserts, ensure the machine is stopped, spindle is locked, and all controls are in a safe state per shop safety procedures. Use the appropriate Torx or hex key to torque the clamping screw to the toolholder manufacturer specification. Inspect the insert pocket and seating surface for chips or debris before seating the new insert to maintain proper clamping and runout.