Kennametal 3751554 Round Turning Insert 3/8 Inch KCP25

Product Description

The KENNAMETAL 3751554 is a round (R-style) carbide turning insert designed for general-purpose metal removal on CNC lathes and turning centers. Carrying the ANSI insert code RCMT325 and ISO code RCMT097300, this insert features a 3/8 inch (0.3750 inch) inscribed circle and a full 360-degree included angle, meaning every point on its circumference is a usable cutting edge. The KCP25 grade uses a multilayer MTCVD coating of TiCN and Al2O3 to balance wear resistance with toughness across a broad range of cutting conditions. With four cutting edges per insert and a positive rake geometry, this insert is a cost-efficient choice for production turning, facing, and boring operations. Licensed machinists and CNC operators handling steel and cast iron will find this a dependable everyday insert.

This insert targets medium machining conditions on steel and cast iron workpieces, classified under primary material codes P and N. The positive side clearance and honed cutting edge style help reduce cutting forces and manage heat during moderate-depth passes. It is suited for turning, facing, and boring applications in both job-shop and production environments. The screw-on holding method (insert holding by screw) provides rigid, repeatable seating in compatible RCMT-style toolholders. The insert meets both ANSI and ISO dimensional standards, making it interchangeable with a wide range of compliant toolholders from multiple manufacturers.

Key Features

• Full-radius round insert shape with 360-degree included angle and four usable cutting edges
• KCP25 grade with multilayer MTCVD TiCN and Al2O3 coating for moderate wear resistance and toughness on steel and non-ferrous materials
• Positive rake geometry with honed cutting edge reduces cutting forces on medium machining passes
• Screw-on holding method ensures rigid, repeatable insert seating in RCMT-compatible toolholders
• Multi-use application: turning, facing, and boring from a single insert geometry
• Meets ANSI and ISO dimensional standards (RCMT325 / RCMT097300)

Compatibility

Designed for use in RCMT-style screw-on toolholders conforming to ANSI and ISO standards. Compatible with turning, facing, and boring operations on steel and cast iron workpieces under medium machining conditions. Material grades C2, C3, C6, and C7 apply.

Installation Notes

Installation is performed by a qualified CNC machinist or toolroom technician. Power down and lockout the machine before changing inserts. Seat the insert fully in the pocket and tighten the clamping screw to the toolholder manufacturer's specified torque — do not over-torque, as carbide inserts are brittle. Inspect the insert pocket and shim for wear or debris before seating a new insert to ensure proper geometry and runout.