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The KENNAMETAL 1937598 is a solid carbide boring insert manufactured to the TPCH2205 insert style, designed for precision internal boring operations on CNC and manual turning equipment. This insert carries the KC5010 manufacturer grade, a micrograin carbide substrate with a Titanium Nitride (TiN) coating applied via PVD process. The 60-degree triangle geometry with an 11-degree relief angle and a 0.007-inch corner radius supports tight-tolerance bore finishing. At 0.096 inches thick with a 0.25-inch inscribed circle, this insert fits standard TPCH-style boring bar toolholders. Machinists and tool-crib technicians in metalworking, aerospace, and general manufacturing applications rely on this insert for consistent, repeatable bore geometry.
This insert is suited for finish and semi-finish boring operations where dimensional accuracy and surface finish quality are critical. The PVD TiN coating provides wear resistance and edge integrity, making it appropriate for use on steels, cast irons, and select non-ferrous alloys at moderate cutting parameters. It is typically installed by CNC machinists or toolroom technicians performing internal diameter work on lathes and boring mills. The TPCH2205 size code is a common designation for compact boring inserts used in small-bore toolholder assemblies.
Designed as an OEM-style replacement insert for TPCH-style boring bar toolholders accepting a 2205 insert size with a 0.25-inch inscribed circle and screw-clamp mounting.
Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before seating or replacing any insert. Use the appropriate Torx or hex key to secure the clamp screw to the toolholder manufacturer specification. Inspect the toolholder pocket and clamp seat for chips or wear before installing a new insert to ensure proper seating and avoid premature edge failure.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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