Sumitomo 16JYWH2 Pcbn Turning Insert BN7000 Diamond

Product Description

The SUMITOMO 16JYWH2 is a Polycrystalline Cubic Boron Nitride (PCBN) turning insert designed for precision single-point turning operations on hard and difficult-to-machine materials. Conforming to ANSI code VNMA331 and ISO code VNMA160404, this insert features a 35-degree diamond shape with a negative rake geometry and a 1/64 inch (0.0156 inch) corner radius. Manufactured to the BN7000 grade with a coated finish, the 16JYWH2 delivers consistent cutting performance in demanding turning applications. It is installed by machinists and CNC turning center operators working with hardened steels, cast irons, and superalloys.

This insert is suited for finishing and semi-finishing operations on hard ferrous metals, cast irons, and heat-resistant superalloys, consistent with its H, K, and S primary workpiece material classifications. The VNMA insert style with clamp and pin holding method makes it compatible with standard VN-series toolholders used in production turning environments, both in job shop and high-volume manufacturing settings. The 3/8 inch inscribed circle and 3/16 inch insert thickness support rigid setups with minimal deflection.

Key Features

• PCBN insert material for machining hardened steels, cast irons, and superalloys
• BN7000 manufacturer grade with coated finish for extended tool life
• 35-degree diamond shape (V) with negative rake for strong cutting edge geometry
• 1/64 inch corner radius for controlled surface finish in finishing passes
• ANSI and ISO 13399 compliant geometry for standardized toolholder compatibility
• Clamp and pin holding method for secure seating under high cutting forces

Compatibility

Designed for use in standard VN-series turning toolholders that accept VNMA-style inserts with clamp and pin holding. Conforms to ANSI code VNMA331 and ISO code VNMA160404 for broad toolholder fitment. Primary workpiece material codes H, K, and S indicate suitability for hardened steels, cast irons, and superalloys.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine before seating or replacing the insert. Ensure the insert pocket and seating surfaces are clean and free of chips before clamping. Follow the toolholder manufacturer's clamping torque specifications and verify proper insert seating before resuming cutting operations.