Tungaloy 6801825 Ceramic Turning Insert CNGA431 LX11

Product Description

The TUNGALOY 6801825 is a ceramic turning insert in the CNGA431 configuration, grade LX11, designed for precision finishing operations on hard materials. The insert features a PVD-applied titanium nitride (TiN) coating over an alumina TiC ceramic substrate. It carries an 80-degree diamond (rhombic) shape with a neutral hand orientation, a negative rake angle, and a honed cutting edge style. With four usable cutting edges and a flat-top chip breaker geometry, it delivers consistent edge performance during high-speed finishing passes. Licensed machinists and CNC toolroom technicians are the primary users of this insert.

This insert is suited for turning, facing, and boring applications on hard workpiece materials in both CNC and manual lathe setups. The CNGA style with negative side clearance and a clamp-and-pin holding method makes it appropriate for rigid toolholding systems. The flat-top chip breaker and honed edge are optimized for light finishing depths of cut, with a maximum depth of cut of 0.0787 inches. It conforms to both ANSI and ISO insert standards, with ANSI code CNGA431 and ISO code CNGA120404.

Key Features

• Alumina TiC ceramic substrate with PVD TiN coating for hard-material finishing
• 80-degree diamond (rhombic) insert shape with 4 cutting edges
• Corner radius of 0.0157 inches (1/64 inch) for fine surface finish work
• Flat-top chip breaker geometry with honed cutting edge style
• Negative rake, negative side clearance - compatible with clamp and pin toolholding
• Multi-use application: turning, facing, and boring

Compatibility

Designed for use in CNGA-style insert toolholders that accept a 1/2-inch inscribed circle, 3/16-inch thick, 80-degree diamond insert with clamp-and-pin holding. Conforms to ANSI and ISO insert geometry standards (ANSI CNGA431, ISO CNGA120404), making it compatible with any compliant toolholder in that geometry class.

Installation Notes

Installation is performed by qualified machinists or CNC toolroom technicians. Before indexing or replacing inserts, confirm the machine spindle is fully stopped and the tool turret or holder is locked out per shop safety procedures. Seat the insert firmly against all locating surfaces in the pocket before tightening the clamp to avoid edge chipping. Inspect the pocket and pin for wear or debris prior to seating, as contamination can compromise insert location and surface finish.