Sumitomo 19R5CHY Carbide Turning Insert SNMG643EEG

Product Description

The SUMITOMO 19R5CHY is a solid carbide turning insert carrying ANSI designation SNMG643EEG and manufacturer grade AC6020M. It features a square insert shape with a 90-degree included angle and a negative rake geometry, making it well-suited for interrupted and continuous turning operations on stainless steel. The Absotech Platinum CVD coating provides wear resistance and thermal stability at elevated cutting speeds. The EEG chip breaker geometry controls chip evacuation during medium to finishing passes. Insert dimensions are 0.75 inches inscribed circle, 0.75 inches length, 0.25 inches thickness, and a 3/64-inch corner radius. This insert is installed by machinists and CNC operators in turning centers and engine lathes.

This insert is optimized for primary workpiece material code M, covering stainless steel and similar ISO M-class materials at material grade M20. It fits standard SNMG-style toolholders using pin and screw insert holding methods. Typical applications include external turning, facing, and profiling passes on austenitic and ferritic stainless steel components in precision machining, general metalworking, and production turning environments where consistent tool life and surface finish are required.

Key Features

• Absotech Platinum CVD coating for elevated heat and wear resistance on stainless steel
• EEG chip breaker geometry designed for medium to finishing turning passes
• Negative rake, 90-degree square geometry (SNMG style) for rigid, predictable cutting
• 3/64-inch corner radius balances edge strength with surface finish quality
• Compatible with pin and screw holding methods for secure seating in SNMG toolholders
• Meets ANSI and ISO 13399 standards; ISO code SNMG190612N-EG

Compatibility

Designed as an OEM-style replacement for SNMG643 series turning inserts used in standard SNMG-style toolholders with pin and screw clamping; ANSI code SNMG643EEG, ISO code SNMG190612N-EG.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine spindle before seating or replacing inserts. Use the appropriate torx or hex key to secure the clamping screw to toolholder specification; do not overtighten, as this can fracture the insert body. Inspect the toolholder pocket and seating surface for chips or debris before installing a new insert.