Kennametal 3760459 CNMG643UP KCM35 Turning Insert

Product Description

The KENNAMETAL 3760459 is a CNMG643UP turning insert in the KCM35 grade, designed for external and internal turning operations on steel, stainless steel, superalloys, and titanium. The insert features a multilayer CVD coating consisting of TiN, TiCN, and Al2O3 applied via MTCVD process, delivering a combination of high toughness and moderate-to-high wear resistance. With an 80-degree diamond shape, a 3/4-inch inscribed circle, and a 3/64-inch corner radius, this insert suits roughing and medium machining passes. The UP chip breaker geometry promotes effective chip control across a range of feed rates and depths. Licensed machinists and CNC turning specialists install this insert in KENLOC-style toolholders on lathes and turning centers.

This insert is suited for production turning environments where the primary workpiece materials are steel (P-grade) and stainless steel (M-grade), with additional capability on superalloys and titanium. The KCM35 grade is engineered for high toughness on steel and moderate wear resistance plus toughness on stainless steel, making it a practical choice for interrupted cuts and variable-condition turning. Typical applications include facing, turning, and boring operations in both job-shop and high-volume production settings. The neutral hand orientation allows use in a wide range of standard CNMG toolholder setups.

Key Features

• Multilayer CVD coating: TiN, TiCN, and Al2O3 via MTCVD process for toughness and wear resistance
• 80-degree diamond (rhombic) insert shape provides a strong cutting edge geometry for general turning
• UP chip breaker optimized for roughing and medium machining operations
• Four cutting edges per insert, negative rake and negative side clearance for rigid, secure clamping
• KCM35 grade rated for steel (high toughness) and stainless steel (moderate wear resistance and toughness)
• Clamp and pin compatible insert holding method; fits KENLOC series toolholders

Compatibility

Designed for use in KENLOC series CNMG toolholders that accept a CNMG643 (ANSI) or CNMG190612 (ISO) insert size. Compatible with clamp-style and pin-lock toolholder systems. Suitable for turning, facing, and boring applications on steel, stainless steel, superalloys, and titanium workpieces.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Before changing inserts, ensure the machine is powered down, the spindle is locked, and all motion has stopped. Seat the insert fully against the toolholder pocket and apply the clamp or pin per the toolholder manufacturer's procedure. Inspect the cutting edge and chip breaker for seating integrity before resuming cuts; a loose or misseated insert can cause tool failure and workpiece damage.