Promax US556248 Corner Radius End Mill 0.50 in 5 Flute

Product Description

The PROMAX US556248 is a solid carbide corner radius end mill designed for demanding metal removal in professional machining environments. Part of the PROMAX US556 series, it features a 0.50 inch mill diameter, 5 flutes with a right-hand spiral, and an extra-long 4.25 inch length of cut. The proprietary PowerLayer coating improves heat resistance and wear life across high-speed operations. A 0.030 inch corner radius reduces stress concentration at the cutting edge, extending tool life during both roughing and finishing passes. Machinists and tool-and-die professionals use this end mill in CNC vertical and horizontal machining centers with a standard straight-cylindrical toolholder interface.

This end mill is suited for material removal in steel, stainless steel, cast iron, superalloys, and titanium. Its high-helix, normal-pitch flute geometry promotes chip evacuation in deep-cavity and long-reach applications where coolant-through capability is not required. The extra-long configuration makes it appropriate for mold work, die pocketing, and any application that demands reach beyond a standard-length end mill. It operates as a single-end, center-cutting tool and accepts right-hand cutting direction spindle setups.

Key Features

• Solid micrograin carbide substrate for rigidity and wear resistance in hard materials
• PowerLayer coating engineered for steel, stainless steel, cast iron, and superalloys including titanium
• 0.030 inch corner radius reduces edge chipping and extends tool life at cutting corners
• 5-flute, high-helix spiral geometry supports both roughing and finishing in a single tool
• Extra-long 4.25 inch length of cut enables deep-cavity and long-reach machining
• Center-cutting design allows plunge entry without a pre-drilled start hole

Compatibility

Designed for use with standard straight-cylindrical toolholders accepting a 0.75 inch shank diameter. Compatible with CNC machining centers running steel, stainless steel, cast iron, superalloys, and titanium workpieces. Material application codes P, M, K, and S per ISO classification.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Power down and lock out the spindle before changing tooling. Seat the 0.75 inch straight-cylindrical shank fully into the toolholder to the recommended gauge-line depth before torquing the retention mechanism. Verify runout at setup; excessive runout will accelerate wear on a multi-flute carbide tool and can cause premature chipping.