Sumitomo 16JRCTT Pcbn Turning Insert Diamond 80 Degree

Product Description

The SUMITOMO 16JRCTT is a Polycrystalline Cubic Boron Nitride (PCBN) turning insert designed for precision material removal in demanding machining environments. Carrying the ANSI code 2NUCNGA433 and ISO code 2NU-CNGA120412, this insert features an 80-degree diamond shape, a negative rake angle, and an uncoated BN2000 grade substrate. With a 0.5 inch inscribed circle and a corner radius of 0.0469 inches (3/64 inches), it delivers repeatable edge geometry for tight-tolerance turning operations. It is installed by machinists and tooling specialists working on CNC lathes and turning centers.

The 16JRCTT is engineered for turning hardened steel (workpiece material code H), making it well-suited for finish and semi-finish passes on hardened components such as bearing races, tooling components, and wear-resistant parts. The CNGA insert style is compatible with standard negative-rake turning toolholders using clamp and pin holding methods. The BN2000 grade is a general-purpose PCBN grade optimized for interrupted and continuous cuts on ferrous hardened materials, typically in the 45-65 HRC range. This insert ships individually with a minimum order quantity of one piece.

Key Features

• PCBN (Polycrystalline Cubic Boron Nitride) insert material for hardened steel turning
• BN2000 uncoated manufacturer grade for consistent edge performance
• 80-degree diamond insert shape (shape code C) with negative rake geometry
• 0.5 inch inscribed circle and 0.0469 inch corner radius for versatile depth-of-cut range
• Clamp and pin holding method for secure seating in CNGA-style toolholders
• 2 cutting edges per insert; chip breaker designation A
• Meets ANSI and ISO 13399 standards

Compatibility

Designed for use in CNGA-style negative-rake turning toolholders that accept clamp and pin insert holding. Compatible with standard Series C toolholder pockets specified for CNGA 120412 inserts per ISO 13399. Intended primary workpiece material is hardened steel (ISO material group H).

Installation Notes

Installation is performed by qualified machinists or tooling technicians on CNC or manual turning centers. Power down and fully de-energize the machine before changing inserts. Seat the insert fully in the toolholder pocket and confirm clamp and pin engagement before resuming cuts. Do not exceed the insert manufacturer's recommended depth-of-cut or feed rate ranges for the BN2000 grade on the target workpiece material.