Iscar 5668393 Tpkt 1003PDR IC845 Carbide Milling Insert

Product Description

The ISCAR 5668393 is a solid carbide milling insert carrying the ANSI designation HM390 TPKT 1003PDR IC845. It features a triangular shape with three cutting edges and a positive rake geometry, designed for use in helical shoulder milling applications. The insert is finished with an AlTiN coating applied via PVD process under ISCAR's Sumotec classification, providing thermal resistance and wear protection during steel machining. Key dimensions include a 3.85 mm thickness, a 7.50 mm inscribed circle, and a 0.80 mm corner radius. It is sized for right-hand cutting with a maximum depth of cut of 8.00 mm. Licensed machinists and CNC operators install this insert as part of a replaceable-edge tooling system.

This insert is intended for milling steel workpieces in ferrous machining operations, corresponding to material application code P. It is compatible with the HM390-10 cutter series, specifically the HELI3MILL platform. Typical use cases include shoulder milling, pocket milling, and ramping operations on CNC machining centers in both job shop and production environments. The screw-hold clamping method and single-sided design make indexing straightforward during setup or mid-run insert changes.

Key Features

• Solid carbide substrate with AlTiN PVD Sumotec coating for extended tool life in steel cutting
• Triangular insert shape with 3 usable cutting edges per insert
• Positive rake and helical cutting edge style reduce cutting forces and improve chip evacuation
• PDR chip breaker geometry suited for steel roughing and semi-finishing
• Maximum depth of cut of 8.00 mm with a 0.80 mm corner radius
• Right-hand, single-sided insert held by screw for repeatable seating
• Conforms to ANSI and ISO 13399 standards for insert identification and interchangeability

Compatibility

Compatible with HM390-10 cutter bodies in the HELI3MILL series. ANSI code HM390 TPKT 1003PDR IC845 and ISO code HM390 TPKT 1003PDR confirm fitment within tooling systems designed for size-10 TPKT-style inserts.

Installation Notes

Installation is performed by machinists or CNC setup technicians. Always power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate Torx or hex key to seat the clamping screw to the cutter body manufacturer's specified torque — consult the HM390 toolholder documentation for that value. Inspect the insert pocket seating surface for chips or debris before seating the new insert to ensure accurate positioning and prevent premature edge failure.