Mitsubishi 644287 CNMG433 Carbide Turning Insert

Product Description

The MITSUBISHI 644287 is a CNMG-style indexable turning insert designed for metal cutting operations on CNC lathes and turning centers. Built from carbide with a PVD coating and grade designation MP7035, this insert is engineered for high toughness applications. It features a neutral hand orientation, an 80-degree diamond (rhombic) insert shape, and a negative side clearance geometry. The corner radius measures 1.20 mm (0.0469 inches), and the inscribed circle diameter is 0.5000 inches (12.70 mm). With four usable cutting edges per insert, it delivers strong value in high-volume production environments. Licensed machinists and CNC operators are the primary installers and users of this tooling component.

This insert is suited for roughing and medium machining operations, with grade characteristics optimized for stainless steel (ISO material group M) where high toughness and edge stability are required. The RM chip breaker geometry supports consistent chip control across varying depths of cut and feed rates common in stainless steel turning. It is appropriate for use in both job shop and production environments where demanding workpiece materials are encountered regularly.

Key Features

• Carbide substrate with PVD coating for wear resistance and edge toughness
• MP7035 grade optimized for stainless steel (ISO M) high-toughness applications
• RM chip breaker supports roughing and medium machining operations
• 4 cutting edges per insert for extended tool life per unit
• 80-degree diamond insert shape (CNMG) with neutral hand orientation
• Negative side clearance geometry for rigid, stable cutting

Compatibility

Designed as an OEM-style replacement or standard tooling insert for CNMG433 (ISO: CNMG120412) compatible turning tool holders with negative rake geometry.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. The machine spindle must be fully stopped and the turret or tool holder secured before indexing or replacing inserts. Use the appropriate torque wrench and insert screw specified by the tool holder manufacturer when seating the insert. Do not exceed the recommended depth of cut or feed rate range for the insert grade and chip breaker designation.