Sandvik Coromant 8021318 Turning Insert Cnmg 16 06 08-WM 4415

Product Description

The SANDVIK COROMANT 8021318 is a CNMG-style indexable turning insert designed for metal-cutting operations on CNC lathes and turning centers. This insert carries the ISO designation CNMG 16 06 08-WM 4415 and is manufactured from solid carbide with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN. The 80-degree diamond shape provides a strong cutting edge geometry, and the WM chip breaker is optimized for steel turning applications. The neutral hand orientation makes it compatible with standard CNMG toolholders. Insert thickness is 0.250 inches with a corner radius of 0.0313 inches. This insert is installed by machinists and CNC operators performing turning, facing, and profiling operations.

The 8021318 is intended for use on steel workpieces as its primary application, with a secondary suitability for K-category materials per ISO classification. It fits standard CNMG insert pockets and is held by clamp or screw-type locking mechanisms depending on the toolholder configuration. Typical use cases include roughing and semi-finishing passes on carbon steel, alloy steel, and similar ferrous materials in production turning environments. The WM chip breaker geometry helps manage chip formation across a range of depths of cut and feed rates common in steel machining.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for wear resistance and thermal protection on steel
• 80-degree diamond insert shape (shape code C) provides strong nose geometry for general turning
• WM chip breaker series engineered for controlled chip evacuation in steel cutting
• Neutral hand orientation fits standard CNMG right-hand and left-hand toolholders
• Corner radius of 0.0313 inches suitable for general-purpose turning and light profiling
• Clamp or screw holding method for secure seating in CNMG-compatible insert pockets

Compatibility

Designed as a direct-fit replacement for CNMG 16 06 08-WM 4415 insert positions in standard CNMG toolholders using clamp or screw retention. Compatible with tooling systems accepting CNMG inserts with an 80-degree diamond shape, M tolerance, and N clearance per ISO insert designation standards.

Installation Notes

Installation is performed by machinists or toolroom technicians following standard indexable insert change-out procedures. Always power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torx or hex key as specified by the toolholder manufacturer when securing screw-lock holders; do not overtighten. Inspect the insert pocket seating surface and shim for damage before seating a new insert to ensure proper edge height and secure clamping.