Iscar 5508103 Turning Insert 55 Diamond IC8250 Isoturn

Product Description

The ISCAR 5508103 is a DCMT-style solid carbide turning insert designed for precision external turning operations on CNC and manual lathes. It carries the IC8250 manufacturer grade with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which provides wear resistance and thermal stability during continuous and interrupted cuts. The insert has a 55-degree diamond shape, a positive rake geometry, and an SM chip breaker configuration. Insert length is 11.6 mm (0.4567 inches), the inscribed circle measures 3/8 inches (0.3748 inches), and the corner radius is 1/32 inches (0.0315 inches). It is held by screw clamping and belongs to the ISCAR Isoturn series.

This insert is engineered for turning stainless steel and carbon or alloy steel workpieces, covering ISO material groups M and P. It is suited for medium-finish to semi-roughing passes with a maximum depth of cut of 3.00 mm (0.1181 inches). Typical installations include external turning toolholders configured for DCMT insert geometry in shop environments ranging from production turning cells to job shop lathes. The SM chip breaker promotes reliable chip control when cutting ductile materials such as austenitic stainless steel.

Key Features

• IC8250 grade with CVD TiCN, Al2O3, and TiN multilayer coating for extended tool life in steel and stainless applications
• 55-degree diamond insert shape (D) with positive rake for reduced cutting forces
• SM chip breaker geometry optimized for stainless steel and steel chip control
• Screw-clamp holding method for secure, repeatable insert indexing
• Maximum depth of cut of 3.00 mm (0.1181 inches) for medium to semi-rough passes
• Conforms to ISO 13399 tooling data standards

Compatibility

Designed for use in DCMT-style screw-clamp turning toolholders within the ISCAR Isoturn series. Primary workpiece materials are stainless steel (ISO group M) and steel (ISO group P).

Installation Notes

Insert replacement and indexing should be performed by a qualified machinist or tooling technician with the machine powered off, spindle locked, and all stored energy released per shop lockout/tagout procedures. Use the appropriate Torx or hex key to seat and torque the clamping screw; refer to the toolholder manufacturer specification for the correct fastener torque value. Inspect the insert pocket and screw threads for debris or damage before seating a new insert. Do not exceed the maximum depth of cut rating for this insert geometry.