Value Collection 112369109 TPGB321 Carbide Turning Insert

Product Description

The VALUE COLLECTION 112369109 is a solid carbide turning insert designed for precision metal cutting on CNC lathes and manual turning centers. Manufactured to ANSI insert code TPGB321 and ISO insert code TPGB160304, this insert features a triangular shape with a 60-degree included angle and a positive side clearance geometry. The 3/8-inch inscribed circle and 1/64-inch corner radius make it well suited for finishing and light roughing passes where tight tolerances and edge consistency are required. It is installed by licensed machinists and CNC operators in job shop and production environments.

This insert is intended for use on non-ferrous metals, cast materials, and superalloys, reflecting its primary workpiece material codes K, M, N, and S. The screw-type holding method secures the insert firmly in compatible toolholders, reducing micro-movement during cut. Typical applications include external diameter turning, facing, and contouring operations where a triangular positive-geometry insert offers clean chip evacuation and predictable tool life. It is suited for both light production runs and precision one-off turning work.

Key Features

• Solid carbide construction with material grade C2 for wear resistance across multiple workpiece materials
• Positive side clearance geometry reduces cutting forces and heat buildup at the edge
• 1/64-inch corner radius supports fine surface finishes on ferrous and non-ferrous materials
• Screw-type insert holding method for secure, repeatable seating in compatible toolholders
• Chip breaker style B integrated into the insert geometry for controlled chip flow
• Conforms to ANSI size code 321 and ISO size code 160304 for broad toolholder compatibility

Compatibility

Designed as an OEM-style replacement or direct-fit insert for screw-clamp turning toolholders accepting TPGB-style triangular inserts with a 3/8-inch inscribed circle and 0.118-inch hole diameter.

Installation Notes

Installation is performed by a qualified machinist or CNC operator. Power down and lock out the machine spindle before removing or seating the insert. Use the appropriate torx or hex key to torque the clamp screw to the toolholder specification — do not over-tighten, as this can chip the carbide. Inspect the insert seat and clamp pocket for debris before seating a new insert.