Kennametal 3659969 Pcd Turning Insert CPGW2151FST KD1400

Product Description

The KENNAMETAL 3659969 is a polycrystalline diamond (PCD) turning insert in the CPGW2151FST geometry, manufactured to ANSI and ISO standards (ISO code CPGW060204). Carrying grade designation KD1400, this single-tipped insert is engineered for high wear-resistance applications in non-ferrous metals and special or super alloys. It features a flat-top chip breaker, a positive rake angle, a positive side clearance, and a sharp cutting edge. The inscribed circle measures 0.25 inches, the corner radius is 0.0156 inches (1/64 inch), and the insert length is 6.45 mm (0.2539 inches). Licensed machinists and CNC turning specialists install this insert as part of screw-on tooling systems.

This insert is suited for turning, facing, and boring operations on non-ferrous workpiece materials including aluminum and its alloys, as well as select special and super alloys. The KD1400 PCD grade delivers high wear-resistance in finishing and semi-finishing passes where surface quality and tool life are critical. The flat-top geometry with a positive rake produces low cutting forces, making it appropriate for thin-wall or chatter-sensitive setups typical in aerospace, automotive, and precision-machining environments. The 80-degree diamond (rhombic) insert shape provides a stable nose angle for general-purpose contouring.

Key Features

• PCD (polycrystalline diamond) insert material — KD1400 grade for high wear-resistance on non-ferrous and special alloys
• CPGW 80-degree diamond (rhombic) insert shape with positive side clearance for reduced cutting forces
• Flat-top chip breaker geometry with zero rake angle and sharp cutting edge
• Screw-on holding method with 0.1102-inch hole diameter for secure clamping in compatible toolholders
• Maximum depth of cut: 1.25 mm (0.0492 inches)
• Uncoated bright finish — no coating process applied, preserving edge sharpness out of the box
• Conforms to ANSI and ISO insert standards; multi-use for turning, facing, and boring

Compatibility

Designed for use in CPGW-style screw-on turning toolholders conforming to ANSI and ISO insert seating standards for CPGW2151 (ANSI) and CPGW060204 (ISO) insert geometries. Consult toolholder documentation to confirm seat configuration before installation.

Installation Notes

This insert is installed by licensed machinists or CNC tooling technicians. Always power down and lock out the machine before indexing or replacing inserts. Use the correct torque-limiting screwdriver or wrench specified by the toolholder manufacturer — do not over-tighten the clamp screw, as PCD inserts are brittle and can fracture under excessive clamping force. Inspect the insert pocket seat for chips or debris before seating a new insert.