Tungaloy 6804794 Pcbn Turning Insert Dnga 55 Diamond

Product Description

The TUNGALOY 6804794 is a Polycrystalline Cubic Boron Nitride (PCBN) turning insert in the DNGA style, designed for high-performance machining of hard materials. Carrying the BXM320 grade designation and a PVD-applied TiCN coating, this insert delivers consistent edge performance in demanding cutting environments. It features a 55-degree diamond shape, a neutral hand orientation, and a chamfered and honed cutting edge style with a negative rake angle. With 2 cutting edges per insert and compatibility with clamp and pin holding methods, it suits production turning operations where edge security and repeatability are critical. Licensed machinists and CNC tooling specialists are the primary installers.

This insert is intended for turning, facing, boring, back turning, and back boring applications on hard workpiece materials classified under ISO material group H. The DNGA 55-degree diamond geometry makes it well suited for interrupted and continuous cuts on hardened steels and other hard ferrous materials. The H chip breaker configuration and chamfered edge preparation help manage cutting forces at low depths of cut. Typical install environments include CNC turning centers and manual lathes running hard-material finishing or semi-finishing passes.

Key Features

• PCBN insert material with PVD TiCN coating for hard material machining
• 55-degree diamond insert shape (DNGA style) with negative rake and neutral hand
• Chamfered and honed cutting edge for improved edge stability
• 2 cutting edges per insert; multi-tipped construction
• Compatible with clamp and pin insert holding methods
• Rated for turning, facing, boring, back turning, and back boring

Compatibility

Designed as an OEM-style PCBN turning insert for use in toolholders accepting DNGA-style inserts with a 0.5-inch inscribed circle. Conforms to ANSI and ISO standards under ISO code DNGA 32H and industry standard number 2QP-DNGA 432-H.

Installation Notes

Installation is performed by qualified CNC machinists or tooling technicians. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing the insert. Use the correct clamp and pin hardware specified for DNGA-style toolholders to achieve proper clamping force without over-torquing. Verify insert seating and edge condition before resuming cutting operations.