Sumitomo 196DCGK Turning Insert WNMG432EEG AC6040M Carbide

Product Description

The SUMITOMO 196DCGK is a solid carbide turning insert in the WNMG432EEG configuration, finished with an AC6040M PVD coating for extended tool life in demanding cutting applications. The insert features an 80-degree trigon shape with a neutral hand orientation and a negative rake geometry. At 0.3425 inches in length with a 0.5-inch inscribed circle and a 0.0313-inch corner radius, this insert is sized for medium-duty turning operations. It is held by clamp and pin methods and carries both ANSI and ISO 13399 classifications, making it straightforward to cross-reference across tool management systems. Machinists and CNC operators working with stainless steel will find the AC6040M grade and EEG chip breaker well-suited to the material demands.

This insert is intended for turning operations on stainless steel workpieces, corresponding to ISO material code M. The WNMG style with negative rake suits external and facing passes where edge stability under interrupted or continuous cuts is critical. Typical installation environments include CNC lathes and turning centers in production machine shops, job shops, and aerospace or medical component manufacturing where stainless steel turning is routine. The TN series designation and EEG chip breaker geometry are engineered to manage chip flow and reduce built-up edge on austenitic and ferritic stainless grades.

Key Features

• AC6040M PVD-coated solid carbide grade optimized for stainless steel turning
• WNMG432EEG geometry with EEG chip breaker for controlled chip evacuation
• 80-degree trigon insert shape with neutral hand and negative rake
• 0.0313-inch corner radius for balanced edge strength and surface finish
• Clamp and pin holding method for secure seating in compatible toolholders
• Dual-standard compliance: ANSI and ISO 13399 for cross-system compatibility

Compatibility

Designed as an OEM-style replacement or direct-fit insert for WNMG-style toolholders accepting a 432 insert size with clamp and pin retention. ISO code WNMG080408N-EG. Compatible toolholders must be sized for a 0.5-inch inscribed circle and 0.2031-inch hole diameter.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist or CNC tooling technician with the machine powered down and the spindle locked. Ensure the toolholder seat and clamp pocket are clean and free of chips before seating the insert. Torque the clamp fastener to the toolholder manufacturer's specification — do not over-tighten, as this can crack the carbide substrate. Verify insert orientation and hand before resuming cutting operations.