Kennametal 5591716 CNMG433MN KCP40B Carbide Turning Insert

Product Description

The KENNAMETAL 5591716 is a solid carbide turning insert with the industry designation CNMG433MN and manufacturer grade KCP40B. It features an 80-degree diamond (rhombic) shape with a neutral hand orientation and a negative rake and side clearance geometry. The inscribed circle measures 0.5 inches, insert thickness is 0.1875 inches, and the corner radius is 0.0469 inches (3/64 inches). The KCP40B grade carries a multilayer MTCVD coating system — TiN, TiCN, and Al2O3 — engineered to deliver high toughness in steel applications and moderate wear resistance with toughness in stainless steel. It is installed by CNC machinists and toolroom technicians on turning centers, lathes, and boring machines.

This insert is designed for roughing and medium machining operations on steel (ISO P) and stainless steel (ISO M) workpieces. Applicable operations include turning, facing, and boring. The KENLOC series insert uses a clamp and pin holding method, and with four cutting edges, it offers multiple index positions before replacement. The maximum depth of cut is 0.1691 inches, making it suitable for moderate-to-aggressive material removal passes on ferrous and austenitic alloys.

Key Features

• KCP40B grade with multilayer CVD coating: TiN, TiCN, and Al2O3 for wear resistance and toughness
• 80-degree diamond insert shape (CNMG) with chamfered and honed cutting edge style
• Four cutting edges per insert for extended tooling economy
• MN chip breaker geometry rated for roughing and medium machining
• Negative rake and negative side clearance for maximum edge strength
• Compatible with clamp and pin insert holding systems in the KENLOC series

Compatibility

Designed for use in KENLOC series toolholders that accept CNMG433 inserts with clamp and pin retention. Suitable for steel (P) and stainless steel (M) workpiece materials per ISO classification. Conforms to ANSI insert code CNMG433 and ISO insert code CNMG120412.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torque wrench for the clamp screw to ensure proper seating without over-stressing the insert. Inspect the insert pocket and seating surfaces for chips or damage before installing a new edge.