Sumitomo 16GBW1G Pcbn Turning Insert Diamond 80 Deg 0.5 in Ic

Product Description

The SUMITOMO 16GBW1G is a Polycrystalline Cubic Boron Nitride (PCBN) turning insert in the CNG series, grade BNC300. It features a titanium nitride (TiN) coating applied via PVD process and carries an 80-degree diamond insert shape code C. The insert uses a neutral hand orientation and a negative rake geometry, making it suited for high-hardness interrupted and continuous turning operations. It has a 0.5-inch inscribed circle, a 3/64-inch corner radius, and a 0.0906-inch insert length. This insert is installed by machinists and CNC lathe operators working in precision metal-cutting environments.

This insert is designed for turning applications on cast iron, steel, and superalloys. It performs in both production and job-shop environments where hardened or abrasive workpiece materials demand a harder cutting-edge material than carbide alone can provide. The HS chip breaker geometry supports controlled chip formation at typical finishing and semi-finishing depths. The 0.015-inch maximum depth of cut indicates this insert is engineered for finishing passes requiring tight tolerances and fine surface finishes.

Key Features

• PCBN insert material grade BNC300 for hard-material turning of cast iron, steel, and superalloys
• TiN coating via PVD process for edge wear resistance
• 80-degree diamond insert shape (shape code C) with negative rake for edge strength
• Neutral hand orientation with HS chip breaker for chip control in finishing cuts
• 0.5-inch inscribed circle with 3/64-inch corner radius for precision fitment
• Dual cutting edges maximize insert service life
• Compliant with ANSI and ISO 13399 standards; ISO code 2NC-CNGA120412HS

Compatibility

Designed as an OEM-style replacement or direct-fit insert for CNG-series toolholders accepting CNGA-style inserts with a 0.5-inch inscribed circle and clamp or pin holding method. Confirm toolholder seat geometry and clamping style before installation. No specific machine or toolholder model compatibility was stated in the available product data.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Always de-energize and lock out the machine before changing inserts. Use proper insert seating tools to avoid edge chipping during installation; do not strike the cutting edge directly. Verify that the toolholder pocket and seating surface are clean and free of chips before seating the insert, and confirm clamp or pin engagement before resuming cutting operations.