Mitsubishi 22905581 Cnmg Carbide Turning Insert

Product Description

The MITSUBISHI 22905581 is a CNMG-style indexable turning insert designed for metal cutting operations on CNC lathes and turning centers. Built from carbide with a CVD coating applied via chemical vapor deposition, this insert delivers wear resistance and thermal stability during continuous and interrupted cuts. The rhombic 80-degree insert geometry provides a strong cutting edge suited for medium to heavy material removal. With a corner radius of 0.0472 inches (1.20 mm) and a negative rake angle, it is optimized for rigid setups where tool pressure and edge integrity are priorities. Installation is handled by machinists and CNC operators working in production or job-shop environments.

This insert is primarily intended for turning cast iron workpieces, reflecting its K-grade classification for ferrous, non-steel materials. The MC5125 manufacturer grade and RK chip breaker geometry make it a practical choice for roughing and semi-finishing passes on gray iron, ductile iron, and similar cast materials. The neutral hand orientation allows use in both conventional and back-turning applications. Each insert provides four usable cutting edges, supporting cost-effective tool management in high-volume turning operations.

Key Features

• CNMG insert style with 80-degree rhombic shape for strong, stable cutting geometry
• CVD carbide coating in MC5125 grade for wear resistance on cast iron
• Four cutting edges per insert for extended tool life and reduced cost per edge
• Corner radius of 0.0472 inches (1.20 mm) suitable for medium surface finish requirements
• RK chip breaker designed to manage chip control during cast iron turning
• Neutral hand orientation compatible with standard and back-turning setups

Compatibility

Designed as a direct-fit replacement for standard CNMG indexable insert toolholders accepting a 5/8-inch inscribed circle, 1/4-inch thick CNMG inserts with negative side clearance and M-tolerance classification.

Installation Notes

CNMG turning inserts are seated and secured by a qualified machinist or CNC operator following the toolholder manufacturer's clamping procedure. Power down and lock out the machine spindle before indexing or replacing inserts. Use appropriate insert seating tools to ensure the insert is fully seated against the pocket locating surfaces before applying clamping torque. Handle carbide inserts with care to avoid chipping cutting edges prior to use.