Sandvik Coromant 7231440 Turning Insert SNMM866-MR 2220

Product Description

The SANDVIK COROMANT 7231440 is a SNMM-style square turning insert designed for external turning operations on CNC lathes and turning centers. It carries the 2220 carbide grade with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which provides wear resistance and thermal stability during continuous and interrupted cuts. The insert features a neutral hand orientation, a 1-inch inscribed circle, a 3/32-inch (0.0937 inch) corner radius, and delivers four usable cutting edges per insert. It belongs to the T-Max P series and is installed by machinists and CNC turning specialists in production and job-shop environments.

This insert is engineered primarily for turning stainless steel workpieces, where CVD multilayer coatings help manage built-up edge and cratering. The MR chip breaker geometry supports medium-roughing applications where controlled chip formation and tool life are priorities. It fits standard SNMM insert pockets on tool holders designed for the T-Max P series. Typical applications include shaft turning, facing, and profile turning on austenitic and martensitic stainless alloys in both light production and general-purpose turning setups.

Key Features

• CVD multilayer coating: TiCN plus Al2O3 plus TiN for wear resistance on stainless steel
• Four cutting edges per insert for extended tool life per unit
• MR chip breaker geometry suited for medium-roughing cuts
• 1-inch inscribed circle and 90-degree square shape for rigid clamping stability
• Compatible with clamp-and-pin insert holding methods
• Neutral hand orientation for use in standard right-hand and left-hand holders

Compatibility

Designed for use in T-Max P series turning tool holders accepting SNMM insert style with clamp and pin holding method. ISO code SNMM 25 09 24-MR 2220 identifies the full specification for holder matching.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine spindle before seating or indexing the insert. Ensure the insert pocket and clamp surfaces are clean and free of chips before torquing the clamp screw to the tool holder specification. Do not exceed the manufacturer-rated depth of cut or feed rate for the 2220 grade, and inspect all four cutting edges before indexing to avoid running a compromised edge.