Walter 7268539 Turning Insert Vcgt 35 Diamond Tialn

Product Description

The WALTER 7268539 is a solid carbide turning insert in the VCGT series, designed for precision metal cutting in demanding machining applications. It features a 35-degree diamond shape (V-style) with a TiAlN PVD coating and the MM4 chip breaker geometry. The insert measures 0.654 inches in length with a 3/8-inch inscribed circle and a 0.008-inch corner radius, providing tight tolerances in finish and semi-finish turning. With a neutral hand orientation and a positive rake angle of 7 degrees, it is suited for stainless steel, superalloys, and titanium as primary workpiece materials. CNC machinists and tool-and-die professionals specify this insert for high-performance turning centers requiring consistent edge life on difficult-to-machine alloys.

This insert is intended for use in turning, facing, boring, and back-turning operations, primarily on stainless steel, superalloys, and titanium (ISO material groups M and S). Secondary applications include steel, non-ferrous metals, and hard materials (ISO groups P, N, and H). The VCGT geometry and MM4 chip breaker make it appropriate for both light finishing and moderate semi-finishing passes on CNC lathes and turning centers in production and job-shop environments. It conforms to ANSI and ISO standards and carries the ISO designation VCGT160402-MM4 WSM01.

Key Features

• 35-degree diamond insert shape (V) with positive 7-degree rake angle for reduced cutting forces on difficult alloys
• TiAlN PVD coating under the WSM01 grade designation for extended tool life on stainless steel, superalloys, and titanium
• MM4 chip breaker geometry supports turning, facing, boring, and back-turning in a single insert style
• Screw-held mounting with a 0.173-inch hole diameter for secure, repeatable insert indexing
• Two cutting edges per insert with a honed cutting edge style for consistent performance across both edges
• Conforms to ANSI and ISO standards; ISO code VCGT160402-MM4 WSM01

Compatibility

Compatible with VCGT-style screw-clamp toolholders designed for a 3/8-inch inscribed circle, 35-degree diamond insert with a C clearance code and G tolerance. Rated for ISO material groups M10, S10, P10, N10, and H20. Verify toolholder pocket geometry and seating before use.

Installation Notes

Installation is performed by qualified CNC machinists or tooling technicians. Ensure the machine spindle is fully stopped and all axes are in a safe home position before indexing or replacing inserts. Seat the insert fully against the pocket locating surfaces and torque the clamping screw to the toolholder manufacturer's specification. Inspect the insert pocket and seating surface for chips or debris before each insert change to maintain accurate positioning.