Kennametal 1868254 Turning Insert CPGM3250 KT315 Cermet

Product Description

The KENNAMETAL 1868254 is a CPGM-style cermet turning insert with a multilayer PVD coating (TiN/TiCN/TiN) and a KT315 manufacturer grade. It carries an 80-degree diamond (rhombic) insert shape, a 3/8-inch inscribed circle, and a 0.0039-inch corner radius with a honed cutting edge style. The insert features a positive rake angle of 5 degrees and an 11-degree relief angle, making it well suited to finish and medium machining operations. It is a screw-on style insert with two cutting edges and is installed by licensed machinists and CNC turning specialists in production and job-shop environments.

This insert is designed for turning, facing, and boring operations on steel, stainless steel, and cast iron workpieces. The KT315 cermet grade delivers high wear resistance across P (steel), M (stainless steel), and K (cast iron) material classifications, making it a versatile choice for shops that run mixed-material jobs. Its chip breaker geometry is rated for medium machining chip control, and the maximum depth of cut is 0.0492 inches (1.25 mm). The neutral hand orientation allows use in a wide range of toolholder configurations.

Key Features

• KT315 cermet grade with multilayer PVD TiN/TiCN/TiN coating for high wear resistance
• 80-degree diamond (CPGM) insert shape with positive rake and 11-degree relief angle
• 3/8-inch (0.3750-inch) inscribed circle, neutral hand
• Honed cutting edge with 0.0039-inch corner radius for consistent surface finish
• Screw-on holding method with two usable cutting edges per insert
• Suitable for turning, facing, and boring on steel, stainless steel, and cast iron

Compatibility

Conforms to ANSI insert code CPGM32502 and ISO insert code CPGM09T301. Compatible with screw-on CPGM-style toolholders accepting a 3/8-inch inscribed circle insert. Verified for use on steel (P), stainless steel (M), and cast iron (K) workpiece materials. Meets ANSI and ISO standards.

Installation Notes

This insert is installed by machinists and CNC lathe operators. Before replacing any insert, power down the machine and follow lockout/tagout procedures per applicable shop safety standards. Use the correct torque wrench and manufacturer-specified screw to seat the insert in the toolholder pocket without over-torquing the clamping screw. Inspect the pocket for chips or damage before seating the new insert to ensure proper indexing and surface contact.