Sumitomo 16JYWGK Pcbn Turning Insert BN7000 Triangle

Product Description

The SUMITOMO 16JYWGK is a Polycrystalline Cubic Boron Nitride (PCBN) turning insert designed for precision machining of hard and difficult-to-cut materials. It features a triangular insert shape with a 60-degree included angle, a 1/4-inch inscribed circle, and a 1/64-inch corner radius. Manufactured to the BN7000 grade with a positive rake geometry and 7-degree relief angle, this insert delivers consistent edge performance in demanding turning applications. It conforms to ANSI and ISO 13399 standards and uses a screw-type holding method for secure, repeatable seating in compatible toolholders. Machinists and CNC turning specialists install this insert in production and job-shop environments.

This insert is suited for turning operations on hardened steels, cast irons, superalloys, and other hard workpiece materials where conventional carbide tooling falls short. The 3NU-TCGA insert style with chip breaker code A supports controlled chip flow in finishing and semi-finishing passes. With three cutting edges per insert, it offers efficient edge utilization. The ISO equivalent designation is 3NU-TCGW110204, which can assist in cross-referencing with compatible toolholder systems and international procurement.

Key Features

• PCBN insert material for hard-turning of ferrous and superalloy workpieces
• BN7000 manufacturer grade with positive rake for reduced cutting forces
• Triangular insert shape with 3 usable cutting edges per insert
• 1/64-inch corner radius for finishing and semi-finishing applications
• Screw-type insert holding for rigid, repeatable positioning
• Compliant with ANSI and ISO 13399 standards

Compatibility

Designed for use with toolholders accepting the 3NU-TCGA insert style in the T series. ISO equivalent code 3NU-TCGW110204 can be used to identify compatible toolholder systems. Suitable for primary workpiece material codes H, K, and S per ISO classification.

Installation Notes

PCBN turning inserts are installed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the toolholder is securely fixtured before seating or replacing an insert. Use the manufacturer-specified torque wrench for the clamping screw to avoid edge chipping or insert fracture. Inspect the insert pocket and screw for wear or damage before each insert change.