Tungaloy 6818018 Pcbn Turning Insert Vnga 331 Diamond 35

Product Description

The TUNGALOY 6818018 is a Polycrystalline Cubic Boron Nitride (PCBN) turning insert in the 2QP-VNGA series, designed for high-performance machining of hard materials. Conforming to ISO code VNGA 331 and ANSI standards, this multi-tipped insert features a 35-degree diamond shape with a neutral hand orientation and negative rake angle. The uncoated BX310 grade with a medium grain structure delivers consistent cutting performance across turning, facing, boring, back turning, and back boring operations. Licensed machinists and CNC operators working with hardened steels and other hard workpiece materials will find this insert suited to demanding production environments.

This insert is intended for hard material turning applications, designated under primary workpiece material code H. Its flat top chip breaker and honed cutting edge style make it applicable to precision turning and boring operations in both roughing and finishing contexts. The 2QP-VNGA series targets applications requiring tight dimensional control, particularly where insert geometry and edge preparation directly affect surface finish and tool life on difficult-to-machine materials.

Key Features

• PCBN uncoated BX310 grade, medium grain structure for hard material cutting
• 35-degree diamond insert shape (Shape Code V) with 2 cutting edges
• Neutral hand, negative rake angle with 0-degree relief and 0-degree rake angle
• Honed cutting edge with flat top chip breaker for controlled chip formation
• Multi-use capable: turning, facing, boring, back turning, and back boring
• Clamp and pin insert holding method for secure seating in compatible toolholders

Compatibility

Designed for use in toolholders accepting VNGA 331 geometry inserts with clamp and pin holding. Conforms to ANSI and ISO standards for VNGA-style inserts. Verify toolholder pocket specifications before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician with the machine fully powered down and spindle locked before insert handling. Inspect the toolholder pocket and seating surfaces for wear or debris prior to mounting. Use the appropriate torque driver for the clamping screw per the toolholder manufacturer specifications. Do not exceed the maximum depth of cut listed in the technical specifications for this insert grade.