Iscar 5566806 Turning Insert SNMM544-R3P IC8250 Carbide

Product Description

The ISCAR 5566806 is a solid carbide turning insert carrying ISO designation SNMM 544-R3P and manufacturer grade IC8250. It is a square-shaped, single-end insert designed for external turning operations in CNC and manual lathe applications. The insert features a multilayer CVD coating of TiCN, Al2O3, and TiN applied over a solid carbide substrate, providing wear resistance and thermal protection during continuous and interrupted cuts. With a 5/8-inch inscribed circle, a 1/16-inch corner radius, and a maximum depth of cut of 0.374 inches, it is suited for medium to heavy stock removal on stainless steel and steel workpieces. Installation is performed by qualified machinists and CNC setup technicians.

This insert belongs to the ISCAR Isoturn series and is engineered primarily for turning stainless steel and carbon or alloy steel. The R3P chip breaker geometry and 90-degree square shape make it well suited for facing operations as well as general longitudinal turning. It is held in the tool holder using a clamp and pin method, which is standard for SNMM-style insert pockets. The insert fits toolholders that accept SNMM 544 inserts with N clearance and M tolerance codes per ISO 13399.

Key Features

• Solid carbide substrate with multilayer CVD coating: TiCN, Al2O3, and TiN for extended tool life on steel and stainless steel
• IC8250 manufacturer grade optimized for primary workpiece materials stainless steel (ISO M) and steel (ISO P)
• R3P chip breaker geometry supports facing and longitudinal turning with effective chip control
• 5/8-inch inscribed circle and 90-degree square geometry for rigid, predictable cutting engagement
• Maximum depth of cut of 0.374 inches suitable for medium to heavy roughing passes
• Clamp and pin insert holding method for secure seating in SNMM-compatible toolholders

Compatibility

Designed for use in toolholders that accept SNMM 544 inserts with N clearance code, M tolerance code, and clamp-and-pin holding method, conforming to ISO 13399. Compatible primary workpiece materials are stainless steel (ISO material code M) and steel (ISO material code P).

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before seating or replacing the insert. Use the correct torque wrench and clamp screw specified by the toolholder manufacturer to avoid insert cracking or clamp damage. Inspect the insert pocket and locating pin for wear or debris before seating a new insert.