Seco 02506646 WCMX0886 T400D Indexable Drill Insert Carbide

Product Description

The SECO 02506646 is a WCMX-style indexable drill insert engineered for use in indexable insert drills across a wide range of workpiece materials. Manufactured from solid carbide and finished with a PVD-applied TiAlN and TiN coating, this insert delivers thermal resistance and edge durability in demanding drilling operations. It carries a manufacturer grade of T400D and an insert size code of 08, with a chipbreaker designation of 86. The 80-degree trigon shape provides a stable cutting geometry, while the 7-degree relief angle reduces cutting forces at the tool tip. A corner radius of 1.2 mm helps distribute load and resist chipping during entry and exit. Licensed HVAC techs, machinists, and toolroom professionals handling multi-material drilling applications will find this insert a reliable consumable for production and maintenance work.

This insert is rated for universal primary workpiece material compatibility, covering material groups H, K, M, N, P, and S. That range includes cast iron, non-ferrous alloys, steel, stainless steel, heat-resistant superalloys, and general-purpose steels. It is suited for both light-production and high-volume drilling scenarios in CNC machining centers and dedicated drill presses where indexable tooling is standard. The inscribed circle measures 12.70 mm and the overall cutting length is 8.14 mm (0.32 inches), making it a compact insert appropriate for moderate-diameter hole drilling applications.

Key Features

• WCMX insert style with 80-degree trigon geometry for stable, low-force drilling
• Solid carbide substrate with PVD-applied TiAlN and TiN dual coating for heat and wear resistance
• 1.2 mm corner radius reduces chipping risk during entry and breakthrough
• 7-degree relief angle minimizes rubbing and cutting-edge heat buildup
• Universal material grade compatibility covering H, K, M, N, P, and S workpiece groups
• Chipbreaker designation 86 optimized for chip control across varied feed conditions

Compatibility

Designed as a replacement-style WCMX0886 indexable drill insert compatible with indexable insert drill bodies that accept WCMX-style inserts in size code 08. Verify tool body manufacturer specifications before installation.

Installation Notes

Indexable drill inserts of this type are seated and secured by a machinist or toolroom technician following the drill body manufacturer's torque and seating procedure. Ensure the machine spindle is fully stopped and locked out before changing inserts. Inspect the insert pocket for chips, burrs, or seat damage before seating the new insert. Use only the drive key or torx driver specified by the tool body manufacturer to avoid stripping the clamp screw.