Iscar 5508086 Turning Insert DNMG432TF IC8250 Isoturn

Product Description

The ISCAR 5508086 is a solid carbide DNMG432TF turning insert in ISCAR grade IC8250, designed for external and internal turning operations on CNC lathes and turning centers. The insert features a CVD-applied TiCN and Al2O3 multilayer coating that provides thermal resistance and wear durability at elevated cutting speeds. At 15.5 mm in length with a 0.5-inch inscribed circle and a 1/32-inch corner radius, the 55-degree diamond shape gives this insert a sharp, aggressive cutting geometry suited to finishing and medium roughing passes. The TF chip breaker controls chip flow across a wide range of feeds and depths.

This insert is intended for use in steel (ISO P) and stainless steel (ISO M) turning applications, consistent with its primary and secondary workpiece material ratings. It fits within the ISCAR Isoturn series toolholding system, which uses a clamp-and-pin holding method to secure the insert during interrupted and continuous cuts. Typical applications include shaft turning, facing, and profiling on both manual and CNC turning machines in production and job-shop environments. Installation is performed by machinists and tool-and-die professionals. The minimum order quantity is 10 inserts; each package contains 1 insert.

Key Features

• CVD TiCN and Al2O3 multilayer coating for high-temperature wear resistance
• 55-degree diamond insert shape (DNMG style) with positive rake geometry
• IC8250 manufacturer grade rated for ISO P and ISO M workpiece materials
• TF chip breaker for controlled chip formation across varied feed rates
• Clamp and pin holding method for secure seating under interrupted cutting loads
• Compliant with ISO 13399 cutting tool data representation standard

Compatibility

Designed for use with ISCAR Isoturn series toolholders accepting DNMG-style inserts with a clamp-and-pin holding method. Confirm toolholder pocket geometry and insert seat dimensions before installation.

Installation Notes

Turning insert replacement is performed by qualified machinists with the machine fully stopped, spindle locked, and all power isolated per shop lockout/tagout procedures. Use the appropriate torx or hex key to release the clamp before removing the worn insert. Inspect the insert pocket and seating surfaces for damage or debris before seating the replacement. Do not exceed the maximum depth of cut of 0.138 inches as specified for this insert geometry.