Sumitomo 10JT223 Cermet Turning Insert TNPR321T

Product Description

The SUMITOMO 10JT223 is a cermet turning insert designed for precision metal cutting in CNC and manual lathe applications. Manufactured in the TNPR style with a triangular insert shape, it features a 3/8-inch inscribed circle and a 1/64-inch corner radius for controlled finishing and light roughing passes. The T1500A cermet grade is uncoated and engineered primarily for steel workpieces where dimensional accuracy and surface finish are critical. This insert is held in place by clamp and pin methods and operates with a negative rake angle. It is installed by machinists and CNC operators working in job shop and production turning environments.

This insert suits turning operations on steel components in both light production and close-tolerance finish applications. The right-hand configuration and negative rake geometry make it appropriate for external turning on conventional and CNC lathes equipped with TNPR-style toolholders. Primary workpiece material designation is P-grade steel, consistent with ISO 13399 classification standards. It is packaged individually and sold in single-unit quantities.

Key Features

• Cermet insert material for clean, accurate steel turning
• Uncoated T1500A grade optimized for P-grade steel workpieces
• Triangular insert shape with 60-degree included angle for versatile toolpath entry
• 1/64-inch corner radius for fine surface finish results
• Right-hand cut orientation with negative rake geometry
• Clamp and pin holding method for secure, repeatable seating
• Compliant with ANSI and ISO 13399 standards

Compatibility

Designed as an OEM-style replacement turning insert for TNPR-style toolholders rated for triangular inserts with a 3/8-inch inscribed circle. ANSI code TNPR321T and ISO code TNGG160304R-ST identify compatible toolholder systems.

Installation Notes

This insert is installed by qualified machinists or CNC technicians. Always power down and lock out the machine before changing inserts. Use the appropriate torque wrench and clamp hardware specified by the toolholder manufacturer to seat the insert correctly. Inspect the insert pocket and clamp for wear or damage before seating a new insert.