Osg HP434-1961 Corner Radius End Mill 5mm 4 Flute Tialn

Product Description

The OSG HP434-1961 is a solid carbide corner radius end mill engineered for high-performance milling in demanding material applications. It features a 5 mm cutting diameter, a 0.5 mm corner radius, and four right-hand spiral flutes with a 30-degree medium helix angle. The cutting length is 13 mm, with an overall length of 80 mm and a 6 mm straight cylindrical shank. A TiAlN PVD coating provides thermal resistance and wear protection, extending tool life when cutting abrasive or high-temperature materials. This tool is centercutting and handles both roughing and finishing passes in a single setup.

The HP434-1961 is suited for milling steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and hard materials. The corner radius geometry reduces edge chipping and stress concentration at the bottom of the cut, making it effective for profile milling, slot milling, and contouring operations in precision machining environments. It mounts in a standard toolholder with a straight-cylindrical shank and is appropriate for CNC machining centers running ferrous and exotic alloy workpieces where tool life and surface finish are critical.

Key Features

• 5 mm cutting diameter with 0.5 mm corner radius for reduced edge stress and improved surface finish
• TiAlN PVD coating for elevated heat resistance in steel, stainless, and superalloy cuts
• Four right-hand spiral flutes with 30-degree medium helix for balanced chip evacuation
• Centercutting design allows plunge entry as well as lateral milling
• Solid carbide construction for rigidity and dimensional stability in close-tolerance work
• Handles roughing and finishing operations across a broad range of workpiece materials

Compatibility

Designed for use with standard straight-cylindrical bore toolholders. Part of the OSG HP434 series, compatible with CNC machining centers and mills accepting a 6 mm shank diameter. Mill diameter tolerance is 0.00 to -0.04 mm; shank diameter tolerance is h6.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and the machine in a safe, locked-out state. Confirm toolholder bore cleanliness and proper runout before securing the shank. Avoid overtightening set screws or collet nuts beyond toolholder manufacturer specifications to prevent shank damage. Verify cutting parameters against the workpiece material category before beginning a new operation.