Iscar 5506938 Turning Insert LNMX150616R-HT IC9250

Product Description

The ISCAR 5506938 is an LNMX-style solid carbide turning insert carrying the manufacturer designation LNMX150616R-HT in grade IC9250. The insert features a CVD-applied TiCN and Al2O3 multilayer coating engineered for wear resistance and thermal stability at the cutting edge. It has a rectangular shape with a 90-degree included angle, a right-hand cutting orientation, a 1/16-inch corner radius, and a positive rake geometry. Insert length is 0.591 inches (15.10 mm) and width is 0.252 inches (6.40 mm). The part belongs to the Heliturn series and is screw-held. It is installed by machinists and CNC tooling technicians performing turning operations on lathes and turning centers.

This insert is primarily suited for turning stainless steel and carbon or alloy steel workpieces, corresponding to ISO material groups M and P. The HT chip breaker geometry and positive rake face make it effective in finishing and semi-finishing passes where controlled chip formation and edge stability are required. Maximum depth of cut is 0.315 inches (8.00 mm). Typical applications include external and internal turning on CNC lathes where screw-clamped rectangular inserts are standard. The insert complies with ISO 13399 tooling data standards. Minimum order quantity is 10 pieces; individual packaging quantity is 1.

Key Features

• IC9250 grade with CVD TiCN and Al2O3 multilayer coating for extended tool life on steel and stainless steel
• Positive rake, LNMX insert style with clearance code N and tolerance code M for consistent seating
• HT chip breaker geometry designed for controlled chip evacuation in finishing and semi-finishing cuts
• Maximum depth of cut of 0.315 inches (8.00 mm) supports a range of pass strategies
• Multi-tipped insert design provides multiple usable cutting edges per insert
• Compliant with ISO 13399 tooling data standards for integration with tool management systems

Compatibility

Designed as an OEM-style replacement insert for ISCAR Heliturn series toolholders accepting LNMX-style screw-clamped rectangular inserts with a 90-degree included angle.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct Torx or hex key for the clamping screw as specified by the toolholder manufacturer, and verify the insert seats fully and evenly in the pocket before resuming cuts. Handle carbide inserts with care to avoid chipping cutting edges during mounting.