Sumitomo 19R5CMX Carbide Turning Insert VNMG331EEG

Product Description

The SUMITOMO 19R5CMX is a solid carbide turning insert designed for precision metal cutting in CNC lathe and turning center applications. Cataloged under ANSI code VNMG331EEG and ISO code VNMG160404N-EG, this insert features a 35-degree diamond shape with a neutral cutting hand and a negative rake angle. The Absotech Platinum CVD coating provides wear resistance and thermal stability during continuous and interrupted cuts. With a 3/8-inch inscribed circle and a 1/64-inch corner radius, it is well-suited for finishing and semi-finishing passes on stainless steel and other M-grade workpiece materials. Machinists and CNC operators install this insert as a direct replacement on compatible toolholders using pin or screw holding methods.

This insert is intended for turning operations on stainless steel and M20 material grade workpieces in both production and job-shop environments. The EEG chip breaker geometry controls chip evacuation during moderate feed-rate cuts, reducing the risk of chip entanglement on long-chipping materials. The neutral hand orientation allows use in standard VNMG-style toolholders running either left- or right-hand turning passes. It meets both ANSI and ISO 13399 standards, supporting tool management systems that rely on standardized insert data.

Key Features

• Absotech Platinum CVD coating for wear resistance on stainless steel and M-grade alloys
• 35-degree diamond insert shape (V) with N clearance and M tolerance codes
• EEG chip breaker geometry for controlled chip formation at moderate feed rates
• Negative rake, neutral hand — compatible with standard VNMG pin-and-screw toolholders
• Meets ANSI and ISO 13399 standards for interoperability with tool management systems
• Solid carbide substrate for consistent edge integrity under thermal and mechanical load

Compatibility

Designed as a direct OEM-style replacement for VNMG-style toolholders accepting pin or screw insert holding methods. Compatible insert style is VNMG with series code VN. No specific toolholder model numbers were provided in the product data.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist or CNC tooling technician with the machine fully stopped and the spindle locked out. Use the appropriate torque wrench and insert screw or pin per the toolholder manufacturer's specifications. Inspect the toolholder seat and clamping hardware for wear or debris before seating a new insert. Follow your facility's cutting tool change procedures and applicable machine guarding requirements.