Sumitomo 196CCMS Turning Insert SNMG120404NEF AC6030M

Product Description

The SUMITOMO 196CCMS is a solid carbide turning insert designed for precision metal cutting on CNC lathes and turning centers. It carries the ANSI designation SNMG120404NEF and is coated with Sumitomo's Absotech Platinum finish applied via CVD process, providing wear resistance and thermal stability at the cutting edge. The insert features a 90-degree square shape with a neutral cutting hand, a 0.5 inch inscribed circle, and a 1/64 inch corner radius. With a negative rake geometry and a G-style chip breaker, it is built for controlled chip evacuation during continuous and semi-interrupted turning operations. Licensed machinists, CNC operators, and tooling specialists typically specify this insert for high-volume production environments.

This insert is engineered primarily for turning stainless steel, corresponding to ISO material grade M and material code M30. It is suited for both roughing and finishing passes on austenitic and ferritic stainless grades where edge toughness and coating adhesion are critical. The SNMG form factor is a widely adopted standard in external turning and boring bar applications across both horizontal and vertical turning centers. Its pin-and-screw holding method ensures positive location in compatible SNMG toolholders. The insert is cataloged under Sumitomo series SN and also references manufacturer catalog number SNMG431EEF-AC6030M for cross-referencing purposes.

Key Features

• Absotech Platinum CVD coating delivers high oxidation resistance and extended tool life on stainless steel workpieces
• Negative rake geometry with G chip breaker supports controlled chip flow and reduced built-up edge
• Square SNMG insert shape provides four usable cutting edges for cost-efficient tooling management
• 1/64 inch corner radius balances surface finish quality with edge strength on medium-depth passes
• Neutral cutting direction suits both right-hand and left-hand toolholder configurations
• Compliant with ANSI and ISO 13399 standards for tooling data interoperability

Compatibility

Designed for use in SNMG-style toolholders accepting a 0.5 inch inscribed circle square insert with pin-and-screw clamping. Compatible with toolholder systems referencing ANSI code SNMG120404 and ISO 13399 insert data. Verify toolholder pocket geometry and clamping style before installation.

Installation Notes

This insert is installed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the turret is in a safe index position before changing inserts. Use the correct torque driver for the clamping screw to avoid damaging the insert pocket seat. Inspect the toolholder pocket and locating pin for wear or debris before seating a new insert, as pocket damage directly affects cutting accuracy and insert life.