Sumitomo 104A792 Cermet Turning Insert TPGT631L

Product Description

The SUMITOMO 104A792 is a TPGT-style cermet turning insert designed for precision external turning operations on steel workpieces. It features a 60-degree triangular shape with a positive rake geometry and an 11-degree relief angle, delivering clean, consistent chip formation in finishing and semi-finishing applications. The T1500Z cermet grade with PVD coating provides wear resistance and edge integrity at elevated cutting speeds. This insert is held in place by a screw-clamp method and is intended for installation by machining professionals and CNC lathe operators working to tight tolerances.

This insert is suited for turning steel components in both production and job-shop environments. The left-hand orientation and LW chip breaker make it appropriate for specific toolholder configurations requiring directional cutting geometry. With a 3/16 inch inscribed circle and a 1/64 inch corner radius, it is sized for light-depth finishing passes where surface finish and dimensional accuracy are the priority. It meets ANSI and ISO 13399 standards, with an ANSI code of TPGT631L and ISO code TPGT080204L-W.

Key Features

• T1500Z cermet grade with PVD coating for extended tool life on steel
• Positive rake, 11-degree relief angle reduces cutting forces on finishing passes
• LW chip breaker geometry promotes controlled chip evacuation
• Left-hand insert hand for compatible directional toolholders
• Screw-clamp holding method for secure, repeatable insert indexing
• Meets ANSI and ISO 13399 standards for insert identification and interchangeability

Compatibility

Designed for use in TPGT-style screw-clamp toolholders configured for left-hand, positive-rake triangular inserts with a 3/16 inch inscribed circle. Primary workpiece material is steel (ISO material code P).

Installation Notes

Installation is performed by qualified machining technicians or CNC operators. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torx or hex key to secure the clamping screw to the toolholder manufacturer's specified method without overtightening, which can fracture the insert. Handle cermet inserts carefully to avoid chipping the cutting edge prior to use.