Iscar 5507838 CNMG644NR IC8150 Turning Insert 3/4 in Ic

Product Description

The ISCAR 5507838 is a CNMG644NR turning insert in the Isoturn series, designed for precision external turning operations on CNC and manual lathes. Manufactured from solid carbide and coated with TiCN and Al2O3 via a CVD process, this insert delivers wear resistance and thermal stability during continuous and interrupted cutting. The 80-degree diamond shape provides a sturdy cutting edge with a 0.0625-inch corner radius. With an inscribed circle of 0.75 inches and an insert length of 19.3 mm (0.76 inches), it fits standard CNMG toolholders. Machining professionals in production and job-shop environments rely on this grade for demanding turning cycles.

This insert is rated for primary workpiece materials including cast iron (ISO material group K) and steel (ISO material group P), making it suitable for a wide range of turning applications in automotive, general manufacturing, and heavy machining environments. The NR chip breaker geometry controls chip flow effectively across moderate to aggressive depths of cut, up to a maximum depth of cut of 10.0 mm (0.3937 inches). It is intended for use by machinists and CNC operators requiring consistent tool life and surface finish on ferrous workpieces.

Key Features

• Solid carbide substrate with CVD-applied TiCN and Al2O3 dual-layer coating for extended wear resistance
• 80-degree diamond insert shape (CNMG) with 0.0625-inch corner radius for strong edge geometry
• NR chip breaker optimized for cast iron and steel turning applications
• Maximum depth of cut of 10.0 mm (0.3937 inches) for versatile stock removal
• Clamp and pin insert holding method for secure seating in compatible toolholders
• Conforms to ISO 13399 tooling data standards for system integration

Compatibility

Designed as an OEM-style replacement turning insert for CNMG-style toolholders used in external turning operations on steel and cast iron workpieces within the Isoturn series.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator with the machine fully powered down and the spindle locked before insert exchange. Use the appropriate torque wrench and clamp hardware specified by the toolholder manufacturer to secure the insert without over-tightening. Inspect the insert pocket and seating surface for chips or wear before installing a new insert. Follow your facility safety procedures and machine tool manufacturer guidelines during all tooling changes.