Kennametal 1943799 Ceramic Turning Insert KY1540

Product Description

The KENNAMETAL 1943799 is a round ceramic turning insert in the KENDEX series, designed for high-speed material removal on hardened steels, superalloys, and titanium. Running under grade KY1540, this uncoated ceramic insert delivers high wear resistance suited to demanding interrupted and continuous cuts. The round insert shape (ANSI code RNG43, ISO RNG120400) provides a full-radius cutting edge with 8 available cutting edges per insert, improving tool utilization. The T-Land cutting edge style and flat-top chip breaker geometry support negative rake operation, which is standard for ceramic tooling in hardened-material applications. The insert measures 0.5 inches inscribed circle and 0.1875 inches thick.

This insert is intended for turning, facing, and boring operations on CNC lathes and turning centers in production and job-shop environments. It is best suited for machining hardened materials (ISO application group H) including hardened steels and difficult superalloy and titanium workpieces. The 0.0492-inch maximum depth of cut and 0.25-inch corner radius make it appropriate for finishing and light semi-finishing passes where surface integrity and tool life in abrasive materials are the primary concerns. Installation is handled by a clamp-style insert holding method compatible with standard KENDEX-series toolholders.

Key Features

• Round insert shape with full radius and 8 cutting edges for maximum insert utilization
• KY1540 uncoated ceramic grade engineered for high wear resistance on hardened materials
• T-Land cutting edge style with flat-top chip breaker supports negative rake geometry
• 0.25-inch corner radius and 0.5-inch inscribed circle suit finishing and light semi-finishing
• Neutral hand orientation compatible with both left- and right-hand toolholder setups
• Clamp-style insert holding for rigid, repeatable seating in KENDEX toolholders

Compatibility

Designed for use in KENDEX-series clamp-style toolholders accepting RNG43 (ANSI) or RNG120400 (ISO) round inserts. Compatible with turning, facing, and boring operations on hardened steels, superalloys, and titanium workpieces. Conforms to ANSI and ISO insert standards.

Installation Notes

Insert seating and clamping should be performed with the machine powered down and spindle locked. Inspect the toolholder pocket and clamping screw for wear or damage before seating a new insert. Use the correct torque driver for the clamp screw per the toolholder manufacturer's instructions — do not overtighten by hand. Ceramic inserts are brittle; avoid impact loads during handling and do not use coolant strategies that cause thermal shock unless the grade is rated for wet cutting.