5 Kennametal 55deg KNGX NPL 132F Top Notch KC850 NOS Carbide Inserts Chamfer

New Old Stock

Please see photos and description

Genuine Kennametal USA

AI Generated description below.  please verify all information before ordering:

The insert shown — Kennametal NPL132F KC850 — is a negative-rake, 55° diamond-shaped (DN style) carbide insert** primarily used for turning and profiling operations on steel and cast-iron materials.

Here’s a quick breakdown of its intended use and characteristics:

🔹 Geometry & Application

Type: 55° diamond (similar to DNMG/DNMA profile)

Relief angle: 0° (negative insert)

Usage: General-purpose turning, facing, profiling, and copying where a strong cutting edge and good chip control are needed.

Mounting: Typically used in negative-rake toolholders that clamp the insert mechanically with a top clamp or pin and chipbreaker.

🔹 Dimensions

Cutting edge length (L10): 0.608″

Width (W): 0.373″

Thickness (S): 0.1875″

Corner radius (Re): 0.031″ (medium nose radius for strength and finish balance)

🔹 Grade KC850

Composition: CVD-coated carbide with TiC/TiN layers.

Ideal for: Continuous to light interrupted cutting of medium to hard steels, and also ductile cast iron.

Properties: Excellent wear resistance with moderate toughness; designed for general-purpose production turning.

🔹 Typical Uses

Machining mild to medium carbon steels and ductile iron.

Finishing to semi-finishing cuts (depending on feed and depth settings).

Often found in automatic lathe, CNC turning center, or engine lathe operations.