Kennametal 1937539 Turning Insert Triangle KC5025

Product Description

The KENNAMETAL 1937539 is a solid carbide triangular turning insert designed for precision metal cutting in CNC and manual lathe applications. Coated with TiAlN via a PVD process, the KC5025 grade insert delivers wear resistance and thermal stability when machining difficult materials. It features a 60-degree included angle, a neutral hand orientation, and a flat-top chipbreaker geometry with a positive rake angle. The inscribed circle diameter measures 0.1600 inches, and the corner radius is 0.0156 inches (1/64 inch). Three cutting edges are available per insert, maximizing tool economy. Licensed machinists and CNC operators in production shops are the primary users of this insert.

This insert is engineered for turning stainless steel, superalloys, and titanium — material groups coded M and S under ISO and ANSI classification standards. It suits high-demand production environments where consistent surface finish and edge integrity are critical. The screw-on holding method provides secure seating in compatible toolholders. A maximum depth of cut of 1.25 mm (0.0492 inches) is rated for this geometry. Typical applications include finish and semi-finish turning passes on heat-resistant and corrosion-resistant alloys in aerospace, medical, and industrial machining operations.

Key Features

• TiAlN PVD coating in KC5025 grade for heat and wear resistance on difficult-to-machine alloys
• 60-degree triangle insert shape with 3 usable cutting edges per insert
• Positive rake, flat-top chipbreaker geometry for controlled chip flow
• Neutral hand orientation for flexible toolholder compatibility
• Screw-on insert holding method for rigid, repeatable seating
• Rated for stainless steel, superalloys, and titanium (ISO material groups M and S)

Compatibility

Designed for use in screw-on style turning toolholders compatible with TDHB-style inserts. Conforms to ANSI and ISO insert standards. Primary workpiece material groups are M (stainless steel) and S (superalloys and titanium). Verify toolholder seat and screw specifications before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before changing inserts. Use the manufacturer-specified torque tool or insert clamp screw to seat the insert without over-torquing the mounting screw. Inspect the toolholder pocket for debris or wear before seating a new insert to ensure proper contact and edge alignment.