Kennametal 3749444 CCMT3253MF KCP10 Carbide Turning Insert

Product Description

The KENNAMETAL 3749444 is a CCMT3253MF screw-on turning insert manufactured in solid carbide with a multilayer MTCVD-applied TiCN and Al2O3 coating under the KCP10 grade designation. It features an 80-degree diamond (rhombic) shape, a 3/8-inch inscribed circle, and a 3/64-inch corner radius with chamfered and honed cutting edges. The MF chip breaker geometry is optimized for finishing and medium machining operations. With positive rake and positive side clearance, this insert delivers high wear resistance on steel and moderate wear resistance with toughness on aluminum and non-ferrous materials. Licensed machinists and CNC turning specialists install this insert in screw-on toolholders for precision metal removal.

This insert is suited for turning, facing, and boring operations on steel, cast iron, aluminum, and non-ferrous workpiece materials. Its KCP10 grade characteristics make it a strong performer in high wear-resistance applications on steel (P-class) and a capable option for aluminum and non-ferrous (N-class) work requiring a balance of toughness and wear resistance. The neutral hand orientation allows use in a wide range of screw-on toolholder configurations common in production and job-shop CNC turning centers. Maximum depth of cut is 0.0492 inches (1.25 mm), positioning this insert firmly in the finishing and light-to-medium machining range.

Key Features

• KCP10 grade with multilayer CVD TiCN and Al2O3 coating for extended tool life on steel and non-ferrous materials
• CCMT3253MF geometry: 80-degree diamond shape with MF chip breaker for finishing and medium machining
• Positive rake and positive side clearance reduce cutting forces during light-to-medium passes
• Chamfered and honed cutting edge style improves edge stability and surface finish
• Two cutting edges per insert maximize usage before replacement
• Screw-on holding method provides rigid, repeatable seating in compatible toolholders
• Neutral hand insert fits a broad range of toolholder orientations

Compatibility

Designed for screw-on style toolholders accepting CCMT3253 (ANSI) or CCMT09T312 (ISO) inserts. Compatible with multi-use applications including turning, facing, and boring. Verify toolholder pocket geometry and screw size before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician with the machine in a full stop and locked-out condition before changing inserts. Use the manufacturer-specified torque driver or wrench for the clamping screw to ensure proper seating without cracking the carbide substrate. Inspect the toolholder pocket for wear or debris before seating the insert, and confirm the cutting edge index before resuming operation.