Promax US007034 Corner Radius End Mill 1/4 in 4 Flute

Product Description

The PROMAX US007034 is a solid carbide, corner radius end mill designed for demanding metal removal in professional machining environments. It carries a 1/4 inch shank diameter, a 3/8 inch length of cut, and a 0.060 inch corner radius, making it suitable for both roughing and finishing passes in a single tool. The PowerLayer proprietary coating extends tool life and reduces heat buildup at the cutting edge. With four flutes, a variable helix, and variable index geometry, this end mill minimizes chatter and improves surface finish on difficult workpiece materials. It is a single-end tool with a straight-cylindrical shank for use in standard toolholders.

This end mill is built for machinists and toolroom professionals working with steel, stainless steel, cast iron, superalloys, titanium, and non-ferrous metals. It fits coarse-pitch, stub-length applications where rigidity and chip evacuation are critical. The right-hand cutting direction and right-hand flute spiral are compatible with standard CNC mill setups. At 2 inches overall length, it is well suited for close-tolerance work in confined pockets or shallow profiles where extended reach is not required.

Key Features

• Solid micrograin carbide construction for edge retention in hard and abrasive materials
• PROMAX PowerLayer coating reduces friction and extends tool life in steel and stainless applications
• Variable helix and variable index geometry reduce harmonic vibration and chatter
• 0.060 inch corner radius protects the cutting edge and improves workpiece surface finish
• Centercutting design allows plunge entry without a pre-drilled pilot hole
• Rated for roughing and finishing in a single tool across multiple material categories

Compatibility

Designed for use with standard straight-bore toolholders accepting a 1/4 inch cylindrical shank. Compatible with primary workpiece materials including steel, stainless steel, cast iron, superalloys, titanium, and non-ferrous metals as specified in the US007 series product data.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the toolholder bore is clean and free of debris before seating the shank; verify runout with a dial indicator after clamping. Power down and lock out the spindle before changing tools. Confirm spindle speed and feed rate parameters against published cutting data for the workpiece material before commencing a cut.