Iscar 5508142 VCMT332SM IC8250 Turning Insert Carbide

Product Description

The ISCAR 5508142 is a solid carbide turning insert with a VCMT style and a diamond-shaped cutting geometry. It carries the IC8250 manufacturer grade and features a multi-layer PVD coating of TiCN, Al2O3, and TiN applied over the carbide substrate. The SM chip breaker geometry and positive rake angle support controlled chip formation during turning operations. With a 35-degree included angle, a 3/8-inch inscribed circle, and a 1/32-inch corner radius, this insert is suited for precision turning passes on steel and stainless steel workpieces. Licensed machinists and CNC lathe operators will find this insert relevant for finishing and semi-finishing applications where tight tolerances are required.

This insert is used in external turning operations on CNC lathes and manual turning centers. It is designed for primary workpiece materials coded M and P under ISO classification, corresponding to stainless steel and carbon or alloy steel. The Isoturn series designation indicates compatibility with ISCAR Isoturn toolholders that accept VCMT geometry inserts secured by screw clamping. A maximum depth of cut of 2.50 mm (0.0984 inches) is appropriate for finishing and light semi-finishing passes.

Key Features

• IC8250 grade with PVD-applied TiCN, Al2O3, and TiN multilayer coating for wear resistance on steel and stainless steel
• SM chip breaker for controlled chip evacuation during finishing passes
• Positive rake geometry reduces cutting forces and heat generation at the insert edge
• 35-degree diamond shape (VCMT) provides a sharp, accessible cutting edge for contour turning
• Screw-clamp insert holding method for secure seating in compatible Isoturn toolholders
• Compliant with ISO 13399 for standardized tool data exchange

Compatibility

Designed for use with ISCAR Isoturn series toolholders that accept VCMT-style screw-clamped inserts. Primary workpiece material classifications are ISO P (steel) and ISO M (stainless steel) per the supplier-stated application codes.

Installation Notes

Insert replacement and seating should be performed with the machine fully powered down and the spindle locked. Use the appropriate Torx or hex key to secure the clamping screw; do not overtighten, as this can crack the carbide insert. Verify the insert pocket is clean and free of chips or debris before seating a new insert. Follow the toolholder manufacturer specifications for screw torque and insert orientation.