Sumitomo 19EA177 WNMG431EEX EH520 Carbide Turning Insert

Product Description

The SUMITOMO 19EA177 is a solid carbide turning insert in the WNMG431EEX geometry, manufactured in the EH520 grade. It features an 80-degree trigon (W) insert shape with a neutral hand orientation and a positive rake angle of 16 degrees. The inscribed circle measures 0.5 inches, the corner radius is 0.0156 inches (1/64 inch), and the insert thickness is 0.1875 inches (3/16 inch). Designed for precision turning operations, this insert is held in place via clamp and pin and is manufactured uncoated for direct application. Machining professionals in aerospace and industrial shops will recognize the EH520 solid carbide grade as a purpose-built solution for superalloy materials.

This insert is designed primarily for turning superalloy workpiece materials, making it a common selection in aerospace and energy sector machining environments. The EEX chip breaker geometry and positive rake promote clean chip evacuation and reduced cutting forces during tight-tolerance turning passes. It is packaged individually and suited for CNC turning centers where WNMG-style toolholders are employed. The ISO equivalent code is WNMG080404N-EX, and the insert meets ANSI and ISO 13399 standards, making it compatible with toolholder systems documented to those specifications.

Key Features

• Solid carbide construction, EH520 manufacturer grade — optimized for superalloy turning
• WNMG431EEX ANSI code with ISO equivalent WNMG080404N-EX for broad toolholder compatibility
• EEX chip breaker geometry with 16-degree positive rake angle for efficient chip control
• Uncoated finish — no coating process applied, suitable where coating-induced edge prep is undesirable
• Neutral hand insert for use in both left- and right-hand toolholders
• Clamp and pin holding method for secure seating under high-load superalloy cutting conditions

Compatibility

Designed for use in WNMG-style toolholders meeting ANSI and ISO 13399 standards. Primary workpiece material designation is superalloy (material code S). The ISO code WNMG080404N-EX can be used to cross-reference compatible toolholder systems.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist with the CNC turning center powered down and in a locked-out state per facility lockout/tagout procedures. Seat the insert fully against the toolholder pocket before engaging the clamp and pin mechanism — partial seating can cause insert fracture under cutting loads. Inspect the pocket and locating pin for wear or debris before each insert change. Superalloy turning typically demands conservative feed and speed parameters; consult the toolholder manufacturer and cutting data documentation for starting recommendations.