Ingersoll Cutting Tools 5811959 Milling Insert Ceramic

Product Description

The INGERSOLL CUTTING TOOLS 5811959 is a ceramic milling insert designed for high-speed machining of cast iron workpieces. It carries the ANSI and ISO designation PNCU0805GNR JIN70N and uses a silicon nitride (Si3N4) ceramic substrate in an uncoated finish. The insert features a pentagon shape with a negative rake angle, a GNR chip breaker, and 10 cutting edges, making it a productive choice for indexable milling operations where tool life and thermal resistance matter. The inscribed circle measures 0.4500 inches and thickness is 0.1900 inches. Installation is by screw-hold clamping, which is standard for this insert style.

This insert is intended for milling cast iron in industrial and production machining environments. The silicon nitride ceramic grade IN70N is engineered to withstand the elevated cutting temperatures associated with dry or semi-dry cast iron milling. Typical applications include face milling and shoulder milling on gray cast iron and nodular cast iron components. Compatible cutter series include 4W2A and DM5G, as specified by the manufacturer. Right-hand cutting orientation applies.

Key Features

• Silicon nitride (Si3N4) ceramic substrate, uncoated, optimized for cast iron milling
• Pentagon insert shape with 108-degree included angle and 10 usable cutting edges
• GNR chip breaker geometry with corner-rounded cutting edge style
• Negative rake, right-hand orientation with 0.0310-inch (1/32 inch) corner radius
• Double-sided insert for extended indexing value per insert
• Screw-clamping hold method compatible with 4W2A and DM5G cutter series

Compatibility

Confirmed compatible cutter series: 4W2A and DM5G. Insert conforms to ANSI and ISO standards under designation PNCU0805GNR JIN70N. Designed for right-hand milling applications targeting cast iron workpieces (material code K).

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct Torx or hex key driver as specified by the cutter body manufacturer for the screw-clamp seat. Inspect the insert pocket and clamping screw for wear or damage before seating a new insert, and ensure the pocket is clean and free of chips to achieve proper seating and insert stability.