KBH20 Inserts for Hard Turning

Primary Application

KBH20 is the ideal PCBN hard turning grade in continuous to lightly interrupted applications. The structure and different edge preparations enable tight and repeatable workpiece tolerances, excellent surface finishes, and surface integrity — even at elevated speeds. Typical applications are case- hardened components, such as gears, shafts, and other drive train components.

What Makes KBH20 Inserts Different?

Newly developed substrate can be used in a wide variety of demanding applications.

The substrate contains uniquely sized superhard grains with a nano-structured binder phase. This unique combination gives a perfect balance of wear resistance and toughness. The result? A wide range of solutions for hard turning, including continuous to interrupted cutting.

Nano-composite coating enhances speed capabilities and tool life.

The specially developed, advanced PVD coating with nano-composite means better performance, wear resistance when machining hardened steels, and PVD-coating adhesion on PCBN substrates.

Improved edge preparation technology for longer tool life, reliable performance, better surface finish, and tighter workpiece tolerances.

A critical performance factor is the edge preparation itself. The grind direction, surface roughness, hone sizes, and tolerances have a big impact on performance and process reliability.

Large standard portfolio to choose from.

Standard edge preparation — the right combination of T-land angle, T-land width, and hone size — is important to achieving the best performance. We've developed three standard edge configurations, including wiper inserts. All are available in common styles, sizes, and nose radii in both positive and negative geometries.

CB1 chipbreaker in positive and negative geometry, solving chip breaking and chip control issues.

The CB1 chipbreaker  gives a definite advantage when machining hardened steels. It effectively breaks long chips that can form bird nests, which cause machine malfunctions, increased scrap-rates, and reduced the equipment performance.

Watch the KBH20 Video