Sumitomo 16JRCTS Pcbn Turning Insert Uncoated BN2000

Product Description

The SUMITOMO 16JRCTS is an uncoated Polycrystalline Cubic Boron Nitride (PCBN) turning insert designed for precision metal cutting operations on hardened steel workpieces. Built to ANSI code 2NUCNGA432 and ISO code 2NU-CNGA120408, this insert features an 80-degree diamond shape with a 0.5-inch inscribed circle and a 0.0313-inch corner radius. The PCBN construction delivers the hardness and thermal stability required for interrupted or continuous cuts on hardened ferrous materials. It is installed by machinists and toolroom technicians on CNC lathes and turning centers configured for hard turning applications.

This insert is suited for hard turning applications in both production and job-shop environments targeting hardened steel components such as bearing races, shafts, and tool steel parts. The 80-degree diamond geometry provides a strong cutting edge with good clearance for profiling cuts. The 2-cutting-edge configuration extends usable insert life per unit. The clamp and pin holding method ensures secure seating in compatible toolholders, making it appropriate for high-speed, tight-tolerance turning passes where surface finish and dimensional accuracy are critical.

Key Features

• PCBN insert material for cutting hardened steel (material grade H) without coolant degradation
• Uncoated BN2000 grade - optimized for dry or semi-dry hard turning
• 80-degree diamond insert shape (ANSI shape code C) for strong nose geometry
• 0.0313-inch corner radius for balance between edge strength and surface finish
• 2 cutting edges per insert for extended service per piece
• Clamp and pin holding method for rigid, repeatable toolholder seating
• Conforms to ANSI and ISO 13399 standards for broad toolholder compatibility

Compatibility

Designed as an OEM-style replacement or direct-specification PCBN turning insert for CNC lathes and turning centers using CNGA-style toolholders with clamp and pin retention, per ANSI 2NUCNGA432 and ISO 2NU-CNGA120408 designations.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the toolholder is secured in the turret before seating or replacing the insert. Use the correct clamp and pin hardware specified for CNGA-style holders to prevent insert movement under cutting loads. Do not exceed the toolholder or machine manufacturers recommended depth of cut or feed rate for PCBN inserts on hardened workpieces.