Sumitomo 104A973 Cermet Turning Insert TPGT21.51RFW

Product Description

The SUMITOMO 104A973 is a TPGT-style cermet turning insert designed for precision external turning operations on steel workpieces. It carries the manufacturer grade T1500Z with a PVD-applied coating and features a positive rake geometry with an 11-degree relief angle. The triangular insert shape provides three usable cutting edges, and the right-hand orientation suits standard OD turning setups. With a 1/4-inch inscribed circle and a 1/64-inch corner radius, this insert is suited for finishing and light semi-finishing passes where tight tolerances and surface finish quality are critical. It is held in place via a screw-clamp method compatible with TPGT-style toolholders.

This insert is intended for use on CNC lathes and manual turning centers in both job shop and production environments. It is primarily applied to steel materials, making it a practical choice for machinists working with low-alloy and carbon steels in precision turning applications. The RFW chip breaker geometry is optimized to manage chip control at finishing parameters. The insert conforms to ANSI code TPGT21.51RFW and ISO code TPGT110204R-FW, allowing direct cross-reference to compatible toolholder systems. Sold individually, with a minimum order quantity of 10 units.

Key Features

• T1500Z cermet grade with PVD coating for wear resistance on steel
• Positive rake, 11-degree relief angle for reduced cutting forces
• TPGT insert style with screw-clamp holding method
• 1/64-inch corner radius suited for finishing and semi-finishing cuts
• RFW chip breaker for controlled chip evacuation at light depths of cut
• Conforms to ANSI TPGT21.51RFW and ISO TPGT110204R-FW standards

Compatibility

Designed for use in TPGT-style screw-clamp turning toolholders with clearance code P and tolerance code G, conforming to ANSI and ISO 13399 insert standards for direct toolholder cross-reference.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist with the machine powered down and spindle locked. Use the appropriate torx or hex key to seat the clamping screw to the toolholder manufacturer's specification. Inspect the insert pocket for chips or debris before seating a new insert. Do not force the insert into the pocket; improper seating can cause insert fracture or toolholder damage.