Sandvik Coromant 8021119 Turning Insert Cnmg 12 04 16

Product Description

The SANDVIK COROMANT 8021119 is a CNMG-style carbide turning insert designed for precision metal cutting on CNC lathes and turning centers. It carries ISO code CNMG 12 04 16-MR 4415 and belongs to the CNMG-MR series rated for ISO P applications. The insert features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which provides wear resistance across a range of cutting speeds and workpiece materials. With a 0.5 inch inscribed circle and a 0.0625 inch corner radius, this neutral-hand insert suits medium to finishing turning passes. It is intended for use by machinists and toolroom professionals working in production and job-shop environments.

This insert is suited for turning operations on steel and cast iron workpieces, consistent with its ISO P and secondary ISO K classification. The CNMG-MR chip breaker geometry is optimized for medium cutting conditions where reliable chip control is required. Typical applications include external and internal turning on CNC lathes using compatible CNMG toolholders with clamp or screw holding methods. The neutral hand orientation allows use in both right-hand and left-hand holder configurations.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for thermal and abrasion resistance
• Manufacturer grade 4415 carbide substrate suited for ISO P and ISO K work materials
• 0.0625 inch corner radius supports medium to finishing cut surface finishes
• Neutral hand insert compatible with clamp and screw-style CNMG toolholders
• MR chip breaker geometry for consistent chip control in medium turning conditions
• ISO code CNMG 12 04 16-MR 4415 for straightforward cross-referencing and replacement

Compatibility

Designed for use in CNMG-style toolholders that accept clamp or screw holding methods with a 0.5 inch inscribed circle insert. Compatible with ISO P and secondary ISO K workpiece material classifications as indicated by the series designation CNMG-MR.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist or toolroom technician with the machine powered down and the spindle locked. Use the appropriate torque wrench and seating tool per the toolholder manufacturer guidelines when securing the clamp or screw. Inspect the insert pocket and seating surface for chips or debris before seating a new insert. Do not run the insert beyond visible wear limits, as degraded cutting edges increase cutting forces and risk workpiece and toolholder damage.