Kennametal 1851263 Ceramic Turning Insert CNGA432

Product Description

The KENNAMETAL 1851263 is a CNGA432T0420FW ceramic turning insert in the KY3500 grade, designed for high-speed finishing operations on cast iron workpieces. Made from silicon nitride ceramic and left uncoated, this insert delivers high wear resistance with moderate toughness — the grade characteristic profile that makes it well-suited for continuous and semi-continuous cuts in gray and ductile cast iron. The insert features a T-Land cutting edge style, a wiper FW chip breaker geometry, and a neutral hand orientation. The inscribed circle measures 0.5 inches, with a corner radius of 0.031 inches and an insert length of 0.508 inches.

This insert is used in turning, facing, and boring operations on cast iron components in both production and job-shop environments. The wiper edge geometry produces a superior surface finish at higher feed rates compared to standard finishing inserts, reducing cycle time without sacrificing finish quality. It mounts using a clamp and pin holding method, consistent with KENLOC tooling systems. The 80-degree diamond shape provides a strong cutting edge and is commonly applied in longitudinal turning and facing passes where insert rigidity and finish quality are the primary requirements.

Key Features

• Silicon nitride ceramic substrate — uncoated, engineered for high wear resistance in cast iron applications
• Wiper FW chip breaker geometry for superior surface finish at increased feed rates
• T-Land cutting edge style with 80-degree diamond insert shape for edge strength
• 4 cutting edges per insert — neutral hand for flexible setup
• Negative rake, negative side clearance geometry for stable, rigid cutting action
• Compatible with ANSI insert code CNGA432 and ISO insert code CNGA120408

Compatibility

Designed for use in KENLOC toolholders accepting CNGA-style inserts (ANSI code CNGA432, ISO code CNGA120408). Suitable for turning, facing, and boring operations. Clamp and pin insert holding method required.

Installation Notes

Installation is performed by machining professionals in CNC turning or manual lathe applications. Power down and de-energize the machine before seating or changing inserts. Ensure the toolholder pocket and seating surfaces are clean and free of chips before installing the insert. Handle ceramic inserts with care — ceramic grades are brittle and can chip if dropped or impacted during handling.