Kennametal 2390284 Milling Insert KC725M Solid Carbide

Product Description

The KENNAMETAL 2390284 is a solid carbide milling insert carrying ISO designation SDET1204PDELGB2 and manufacturer grade KC725M. It features a square insert shape with a 90-degree included angle, a left-hand orientation, and a GB2 chip breaker geometry. The tri-layer PVD coating - TiN, TiCN, TiN - provides wear resistance and thermal stability during interrupted and continuous milling operations. At 0.1875 inches thick with a 0.5000-inch inscribed circle and a 0.0315-inch corner radius, this insert suits precision milling applications where tight tolerances and surface finish consistency are required. Screw-style insert holding provides secure clamping under high cutting forces.

This insert is designed for milling steel, stainless steel, superalloys, and titanium - workpiece material codes P, M, and S per ISO classification. It fits applications ranging from general-purpose steel roughing to demanding cuts in aerospace-grade titanium and nickel-base superalloys. The KC725M grade with PVD TiN/TiCN/TiN coating is suited for moderate to high cutting speeds where edge toughness and coating adhesion are critical. Typical install scenarios include face milling, shoulder milling, and helical interpolation on CNC machining centers. The left-hand designation must be matched to the correct hand of the cutter body during setup.

Key Features

• ISO designation SDET1204PDELGB2 with GB2 chip breaker geometry for controlled chip evacuation
• KC725M grade with PVD tri-layer TiN/TiCN/TiN coating for wear resistance and edge stability
• Square insert shape with 90-degree included angle and 15-degree relief angle
• Left-hand insert orientation - must be matched to a compatible left-hand cutter body
• 0.0315-inch (0.80 mm) corner radius for balanced edge strength and surface finish
• Screw-mount insert holding method for positive, repeatable seating

Compatibility

Designed as an OEM-style replacement or direct-use insert for SDET-series left-hand milling cutter bodies accepting a 1/2-inch inscribed circle, 3/16-inch thick square insert with screw holding. Confirm cutter body hand, insert pocket geometry, and insert size code 43 compatibility before installation.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Power down and lock out the spindle before seating or removing inserts. Use the correct torx or hex key torque driver specified by the cutter body manufacturer - do not overtighten or undertighten the clamping screw. Verify insert seating in the pocket is flush and fully supported before resuming cutting operations.