Kennametal 5640964 Turning Insert CCMT3252MP KCM15B Carbide

Product Description

The KENNAMETAL 5640964 is a solid carbide turning insert designated CCMT3252MP in the KCM15B grade, designed for external and internal turning, facing, and boring operations on CNC and manual lathes. The insert features an 80-degree diamond (rhombic) shape with a 3/8-inch inscribed circle, a 1/32-inch corner radius, and a multilayer TiCN and Al2O3 coating applied via MTCVD and CVD processes. The KCM15B grade is engineered to balance moderate wear resistance with toughness, making it a reliable choice for interrupted and continuous cuts on steel and stainless steel. The MP chip breaker geometry supports roughing and medium machining applications across a broad range of feed and depth-of-cut conditions.

This insert is suited for production turning of steel, stainless steel, superalloys, and titanium in both roughing and semi-finishing passes. The positive rake angle of 12 degrees and honed cutting edge reduce cutting forces and generate clean chip evacuation. The screw-on holding method provides rigid, repeatable seating in compatible CCMT-style toolholders. It delivers two cutting edges per insert, supporting cost-effective tooling management in high-volume shop environments. Typical users include machinists and CNC operators working in job shops, aerospace shops, and general manufacturing facilities.

Key Features

• 80-degree diamond insert shape (CCMT) with positive side clearance and neutral hand for flexible tool orientation
• KCM15B grade with multilayer TiCN and Al2O3 MTCVD/CVD coating for wear resistance on steel and stainless steel
• MP chip breaker supports roughing and medium machining operations
• Positive rake angle (12 degrees) and honed cutting edge reduce cutting forces and extend edge life
• Two usable cutting edges per insert for efficient tooling cost management
• Screw-on insert holding method ensures secure, repeatable seating in CCMT toolholders

Compatibility

Designed as a screw-on replacement insert for CCMT-style toolholders conforming to ANSI insert code CCMT3252 and ISO insert code CCMT09T308. Compatible with multi-use turning, facing, and boring applications on steel, stainless steel, superalloys, and titanium workpieces.

Installation Notes

Installation is performed by a machinist or CNC tooling technician. Ensure the machine spindle is stopped and all axes are at a safe position before changing inserts. Use the appropriate Torx or hex key to seat the clamp screw to the toolholder manufacturer's specified torque range — do not overtighten, as this can crack the insert or damage the pocket. Inspect the insert pocket for chips or wear before seating a new insert, and confirm the cutting edge is indexed correctly before resuming cuts.