Kennametal 1943800 Ceramic Turning Insert RNG45E KY1540

Product Description

The KENNAMETAL 1943800 is a round ceramic turning insert in the KENDEX series, designed for high-speed material removal on hardened steels, superalloys, and titanium. Carrying the industry standard code RNG45E and manufactured to grade KY1540, this insert features a 0.5 inch inscribed circle, a 0.25 inch corner radius, and an uncoated bright finish that delivers high wear resistance without a coating layer. The flat top chipbreaker geometry and honed cutting edge support stable, predictable performance in demanding turning, facing, and boring applications. Eight cutting edges per insert maximize tool life and reduce per-edge cost.

This insert is suited for CNC turning centers and manual lathes performing finishing and semi-finishing passes on hardened workpieces rated in the H material group. Typical applications include turning and facing of hardened steel components and high-temperature superalloy or titanium parts where ceramic tooling outperforms carbide. The neutral hand orientation and full-radius round shape make it adaptable to a wide range of clamp-style toolholders. It is used in both production shop and job-shop environments where tool life consistency under high surface speed is a priority.

Key Features

• KY1540 ceramic grade engineered for high wear resistance on hardened materials (H group)
• Round insert shape (RNG) with full radius and 8 usable cutting edges
• 0.25 inch corner radius for smooth surface finish on curved profiles
• Uncoated bright finish — no delamination risk, consistent edge performance
• Flat top chipbreaker with honed cutting edge for stable chip formation
• Compatible with turning, facing, and boring operations in a single insert style
• Meets ANSI and ISO dimensional standards (ANSI RNG45, ISO RNG120700)

Compatibility

Designed for use in KENDEX series clamp-style toolholders that accept round RNG-style inserts with a 0.5 inch inscribed circle. Verify toolholder pocket specifications against ANSI size code 45 and ISO size code 120700 before installation.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Always power down and lock out the machine spindle before seating or indexing the insert. Use the correct clamp screw torque per the toolholder manufacturer's specification, and verify insert seating fully against the pocket before resuming cuts. Ceramic inserts are brittle — avoid interrupted cuts, sudden feed changes, or impact loading that can cause edge fracture.