Promax 156-11024 Corner Radius End Mill 0.1875 in 4 Flute

Product Description

The PROMAX 156-11024 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining applications. Built from micrograin solid carbide and coated with AlTiN via a PVD process, this single-end tool delivers both roughing and finishing capability in a compact short-length profile. The 0.01-inch corner radius reduces stress concentrations at the cutting edge, extending tool life in hard and abrasive materials. With a 0.1875-inch diameter, 4 flutes, and a high helix spiral geometry, the 156-11024 is suited for machinists and tool-and-die professionals running aggressive feeds on ferrous and exotic workpieces.

This end mill is intended for use in CNC machining centers and milling machines where tight tolerances and clean surface finishes are required. Primary target materials include steel, stainless steel, superalloys, and titanium. The coarse pitch, variable index geometry helps reduce chatter during both slotting and peripheral milling operations. The straight cylindrical shank seats directly into standard toolholders without adapters, making it a straightforward drop-in for shops already running 3/16-inch shank tooling.

Key Features

• AlTiN PVD coating for high-heat resistance in steel, stainless steel, superalloys, and titanium
• Micrograin solid carbide substrate for edge retention and rigidity
• 0.01-inch corner radius reduces edge chipping and stress at corners
• 4-flute, right-hand cut, right-hand spiral with high helix for efficient chip evacuation
• Variable index geometry reduces harmonic chatter during aggressive cuts
• Center-cutting capable - allows plunge entry without a pre-drilled pilot hole
• Single-end configuration with straight cylindrical shank for direct toolholder mounting

Compatibility

Designed for use with standard cylindrical-bore toolholders accepting a 3/16-inch shank diameter. Suitable for CNC milling applications involving steel, stainless steel, superalloys, and titanium workpieces.

Installation Notes

Installation should be performed by a qualified machinist following shop-standard toolholder torque and runout procedures. Verify shank seating depth and runout at the spindle before beginning a cut. Confirm that the toolholder bore and collet are clean and free of chips or debris prior to insertion. Always reference the machine tool manufacturer guidelines and applicable shop safety protocols when changing tooling.