Tungaloy 6864951 VCMT110304-PSF Carbide Turning Insert

Product Description

The TUNGALOY 6864951 is a VCMT110304-PSF AH725 grade solid carbide turning insert designed for precision finishing operations on CNC lathes and turning centers. It features a 35-degree diamond (rhombic) insert shape with a positive rake angle of 20 degrees and a 7-degree relief angle, giving it a sharp, free-cutting geometry suited to light, accurate passes. The TiAlN PVD coating on AH725 grade carbide delivers high wear resistance across a broad range of workpiece materials. With a corner radius of 0.40 mm (1/64 inch) and a maximum depth of cut of 0.50 mm, this insert is engineered for finishing where tight tolerances and fine surface finishes are the priority.

The VCMT110304-PSF PSF chip breaker geometry is optimized for finishing cuts on steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It is well suited to external turning, facing, boring, back turning, and back boring applications in both production and job-shop environments. The neutral hand orientation and screw-holding method make it compatible with standard VCMT-style toolholders. Licensed machinists and CNC operators in aerospace, general machining, and precision manufacturing will find this insert applicable across a wide range of turning scenarios.

Key Features

• AH725 grade TiAlN PVD coating for high wear resistance on steel and stainless steel (P15, P30, M15, M30)
• PSF chip breaker geometry optimized for finishing operations with positive rake
• 35-degree diamond insert shape provides a sharp cutting angle for low cutting forces
• 0.40 mm corner radius for fine surface finish and close-tolerance work
• Two cutting edges per insert for extended tool life per unit
• Multi-use geometry supports turning, facing, boring, back turning, and back boring
• Positive side clearance and chamfered/honed cutting edge style reduce built-up edge risk

Compatibility

Designed for use in standard VCMT-style screw-lock toolholders conforming to ANSI insert code VCMT221 and ISO insert code VCMT110304. Compatible with toolholders accepting a 6.35 mm (0.250 inch) inscribed circle insert with a 3.18 mm (0.125 inch) insert thickness and a 2.80 mm hole diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator with the machine in a full stop, locked-out, and de-energized state before any insert change. Seat the insert fully against the toolholder pocket and torque the clamping screw to the toolholder manufacturer's specified value using a calibrated torque driver. Inspect the insert seat and clamping screw for wear or debris before seating a new insert. Verify tool offset data in the machine controller after each insert change before resuming cuts.