Kennametal 3383297 CPGW2152EC KB1345 Pcbn Turning Insert

Product Description

The KENNAMETAL 3383297 is a polycrystalline cubic boron nitride (PCBN) turning insert designed for precision machining of cast iron and hardened ferrous materials. Manufactured to ANSI insert code CPGW21.52 and ISO code CPGW060208, this insert features an 80-degree diamond (rhombic) shape with a positive side clearance and screw-holding method. The KB1345 grade delivers moderate wear resistance combined with high toughness, making it well suited for interrupted cuts and demanding finishing operations. It is installed by machinists and CNC toolroom technicians on turning centers and lathes running ferrous workpiece programs.

This insert is used in turning applications involving cast iron workpieces where edge durability and dimensional consistency are priorities. The CPGW style with a W chip breaker geometry supports controlled chip formation in moderate to aggressive cutting conditions. Typical installation scenarios include OD turning, facing, and light contouring on horizontal and vertical turning centers in production or job-shop environments.

Key Features

• PCBN (uncoated, bright finish) cutting material for hardened and cast iron machining
• 80-degree diamond insert shape provides a strong cutting edge with versatile approach angles
• 11-degree relief angle with positive side clearance reduces cutting forces
• KB1345 grade balances moderate wear resistance with high toughness for interrupted cuts
• W chip breaker geometry promotes controlled chip evacuation
• Screw-clamped holding method for secure, repeatable insert indexing

Compatibility

Designed as an OEM-style replacement or direct-fit turning insert for toolholders accepting CPGW-style inserts with a 0.25-inch inscribed circle; cross-references to ISO code CPGW060208 and industry standard number TNMG332RP.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torx or hex key to secure the clamping screw to the toolholder specification - do not overtighten, as PCBN substrates are brittle and susceptible to micro-fracture under excessive clamp load. Verify insert seating and toolholder pocket cleanliness before resuming cuts.