Seco 00098986 TCMT21.52-F1 CP500 Triangle Turning Insert

Product Description

The SECO 00098986 is a TCMT-style triangular turning insert designed for precision finishing operations on CNC lathes and turning centers. Manufactured from solid carbide and coated with a multilayer PVD TiAlN and TiN finish under the CP500 grade designation, this insert delivers a balance of wear resistance and toughness suited to demanding cutting conditions. It features a 1/4-inch inscribed circle, a 1/32-inch corner radius, and a sharp cutting edge style with a positive rake and positive side clearance. The F1 chip breaker geometry is optimized for finishing passes. Machinists and CNC operators in job shops and production environments rely on this insert for consistent surface finish and predictable tool life.

This insert is intended for finishing operations including turning, facing, boring, and back turning. Its primary workpiece material is stainless steel, with secondary applications covering steel, cast iron, superalloys, and titanium. It carries material grade classifications of M10, M20, and M30, and is rated under ISO material codes P, K, and S. The TCMT21.52-F1 geometry is suitable for moderate to high wear-resistance applications across these material families. The insert is held by screw mounting and is compatible with standard TCMT-style toolholders used in both light and medium-duty turning setups.

Key Features

• CP500 grade with multilayer PVD TiAlN and TiN coating for extended tool life on stainless, steel, and cast iron
• F1 chip breaker geometry optimized for finishing cuts
• Sharp cutting edge with positive rake and positive side clearance for clean chip evacuation
• Three usable cutting edges per insert for cost efficiency
• Suitable for turning, facing, boring, and back turning applications
• Meets ANSI and ISO standards; ANSI code TCMT21.52, ISO code TCMT110208

Compatibility

Designed for use in standard TCMT-style screw-clamp toolholders. Compatible with applications involving stainless steel, steel, cast iron, superalloys, and titanium workpieces. Verify toolholder seating and screw torque specifications against the toolholder manufacturer guidelines before use.

Installation Notes

Installation is performed by machining professionals or CNC setup technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate Torx or hex key specified by the toolholder manufacturer to secure the clamping screw — do not overtighten by feel alone; follow the toolholder manufacturer torque specification. Inspect the insert seat and clamping screw for wear or debris before seating a new insert.