Kennametal 1937571 Boring Insert TPCB2205 KC5010 Solid Carbide

Product Description

The KENNAMETAL 1937571 is a solid carbide boring insert designed for precision internal turning and boring operations on CNC and manual lathes. Manufactured in the TPCB style with a 60-degree triangular geometry, this insert features a PVD-applied Titanium Nitride (TiN) coating over a micrograin carbide substrate in the KC5010 grade. The 0.007-inch corner radius delivers sharp, consistent edge engagement, while the 11-degree relief angle reduces rubbing and improves surface finish in tight-tolerance bore work. Machinists and toolroom operators rely on inserts of this type for finishing and semi-finishing passes in steel and similar workpiece materials where dimensional accuracy is critical.

This insert is suited for light to moderate boring operations in production and job-shop environments. The TPCB insert style seats in standard TPCB-compatible boring bar holders. The 1/4-inch inscribed circle and 3/32-inch thickness correspond to a size 2205 insert, making it a common choice for small-diameter bore finishing where a compact, rigid cutting edge is required. This insert is sold individually but carries a minimum order quantity of 5 units.

Key Features

• Solid carbide micrograin substrate in KC5010 manufacturer grade for edge strength and wear resistance
• PVD Titanium Nitride (TiN) coating reduces built-up edge and extends tool life in steel applications
• 60-degree triangle geometry (TPCB style) with 11-degree relief angle for reduced cutting forces
• 0.007-inch corner radius suited for finishing and semi-finishing passes
• 1/4-inch inscribed circle and 0.096-inch thickness match size 2205 boring bar toolholders
• 0.130-inch hole diameter for positive mechanical clamping in compatible holders

Compatibility

Designed for use in TPCB-style boring bar holders and insert seats that accept a size 2205 triangular insert with a 1/4-inch inscribed circle and 3/32-inch nominal thickness.

Installation Notes

Installation is performed by a machinist or toolroom technician. Ensure the machine spindle is fully stopped and the machine is in an energy-isolated state before seating or indexing any insert. Use the appropriate torque wrench and clamp screw specified by the toolholder manufacturer to secure the insert — do not over-tighten or use impact tools on clamping hardware. Inspect the insert pocket and seating surface for chips or debris before installation to prevent insert rocking and premature edge failure.