Kennametal 3760440 CNMG644RP KCM35 Turning Insert

Product Description

The KENNAMETAL 3760440 is a CNMG644RP KCM35 grade carbide turning insert designed for external turning, facing, and boring operations on steel, stainless steel, and superalloys including titanium. The insert features a multilayer CVD coating system consisting of TiN, TiCN, and Al2O3, applied via MTCVD process to deliver a combination of wear resistance and toughness suited to roughing and medium machining. The 80-degree diamond (rhombic) insert shape provides a strong cutting edge geometry. The KCM35 grade is characterized by high toughness on steel (P) and moderate wear resistance with toughness on stainless steel (M). With four usable cutting edges and a chamfered, honed edge preparation, the insert is a practical multi-use option for KENLOC-series toolholders.

This insert fits applications in general-purpose turning on CNC lathes and machining centers where steel and stainless steel are the primary workpiece materials. The RP chip breaker geometry is engineered for roughing through medium machining passes. The neutral hand design allows use in both right- and left-hand configurations. Machinists working with superalloys and titanium can apply this insert within its rated depth-of-cut parameters. It is sold individually per package with a minimum order quantity of five pieces, making it suitable for shop stocking and toolcrib replenishment.

Key Features

• KCM35 grade with multilayer CVD coating: TiN, TiCN, and Al2O3 for combined wear resistance and toughness
• 80-degree diamond insert shape with negative rake and negative side clearance for strong edge geometry
• RP chip breaker supports roughing and medium machining operations
• Four cutting edges per insert for extended tooling economy
• Compatible with clamp and pin insert holding methods
• Rated for turning, facing, and boring on steel, stainless steel, and superalloys including titanium

Compatibility

Designed for KENLOC-series toolholders accepting CNMG-style inserts. ANSI insert code CNMG644 and ISO insert code CNMG190616. Compatible with clamp and pin holding methods. Suitable for steel (P), stainless steel (M), and superalloy and titanium workpiece materials.

Installation Notes

Installation is performed by a machinist or toolroom technician. Ensure the toolholder pocket and seating surfaces are clean and free of chips before seating the insert. Use the appropriate torque per the toolholder manufacturer specification when tightening clamp screws. Confirm the machine spindle is fully stopped and the machine is in a safe state before changing inserts.