Kennametal 5413256 VBMT331LF KCP10B Turning Insert Diamond 35

Product Description

The KENNAMETAL 5413256 is a VBMT331LF KCP10B screw-on turning insert designed for precision metal-cutting operations on CNC lathes and turning centers. It features a 35-degree diamond insert shape with a positive rake angle of 5 degrees and a 5-degree relief angle. The insert is manufactured from solid carbide and finished with a multilayer MTCVD coating system consisting of TiCN, Al2O3, and TiOCN layers under the KCP10B grade designation. This coating sequence is engineered for thermal resistance and wear life in continuous and interrupted cut applications. The cutting edge is honed for consistent edge integrity, and the LF chip breaker geometry promotes controlled chip formation at moderate feeds and depths.

This insert is suited for turning, facing, boring, back turning, and back boring operations. Primary workpiece materials are steel (ISO P) and cast iron (ISO K), making it applicable across a broad range of general machining and production turning environments. It is installed using the screw-on holding method, compatible with VBMT-style toolholders. The neutral hand designation means it fits both right-hand and left-hand toolholder configurations depending on setup requirements. Machinists and CNC operators in job shops, production facilities, and maintenance machining will find this insert suitable for moderate to high-volume turning cycles.

Key Features

• KCP10B multilayer MTCVD coating: TiCN, Al2O3, and TiOCN for extended wear resistance on steel and cast iron
• 35-degree diamond insert shape (ISO shape code V) with positive 5-degree rake and 5-degree relief angle
• LF chip breaker geometry for controlled chip evacuation at moderate feed rates
• Honed cutting edge style for consistent edge prep and reduced microchipping
• 2 cutting edges per insert; neutral hand for versatile toolholder compatibility
• Multi-use capable: turning, facing, boring, back turning, and back boring
• Screw-on insert holding method for secure, repeatable seating in VBMT toolholders

Compatibility

Designed for use in VBMT-style screw-on toolholders. Conforms to ANSI and ISO standards for VBMT331 insert geometry. Compatible with toolholders specifying a 35-degree diamond insert with a 3/8-inch inscribed circle and screw-on clamping. Verify toolholder pocket specifications before installation.

Installation Notes

Installation is performed by machining professionals using standard insert-seating tools; power down and lock out the machine spindle before changing inserts. Seat the insert fully into the toolholder pocket and tighten the clamping screw to the toolholder manufacturer's specified torque. Inspect the pocket and locating surfaces for chips or debris before seating to ensure accurate insert positioning. Dispose of worn inserts according to applicable shop safety and carbide-recycling protocols.