Widia 6146566 Corner Radius End Mill 1/2 in 5 Flute Carbide

Product Description

The WIDIA 6146566 is a solid carbide corner radius end mill engineered for demanding material removal in high-temperature alloys, steel, stainless steel, and hard materials. It carries a 0.12 inch corner radius and features a 38-degree medium helix with a 5-flute, close-pitch configuration designed to support both roughing and finishing operations in a single tool. The WS15PE PVD coating provides thermal and wear resistance suited to the elevated cutting forces common in aerospace and energy sector workpieces. Overall length is 3 inches with a 1-1/4 inch length of cut and a 1/2 inch straight cylindrical shank.

This end mill is built for milling centers and machining cells running high-temperature alloys as the primary material, with secondary suitability for steel, stainless steel, and hard materials. The centercutting geometry allows plunge entry, expanding its use in slotting, pocketing, and profiling operations. The variable index flute spacing reduces harmonic chatter at aggressive feed rates, making it appropriate for high-performance machining environments where surface finish and tool life consistency are critical. It is intended for use with standard precision toolholders.

Key Features

• 0.12 inch corner radius reduces stress concentration at workpiece corners and extends edge life
• 5-flute close-pitch design supports high material removal rates in roughing and finishing
• WS15PE PVD coating rated for high-temperature alloy, steel, stainless steel, and hard material applications
• Variable index flute spacing reduces chatter and improves surface finish consistency
• Centercutting geometry allows direct plunge entry without a pre-drilled pilot
• Right-hand cut, right-hand flute spiral with straight-cylindrical shank for broad toolholder compatibility

Compatibility

Designed for use with standard precision toolholders in milling applications involving high-temperature alloys, steel, stainless steel, and hard materials. Belongs to WIDIA Series 5V0E.

Installation Notes

Installation is performed by machinists or tool-room personnel. Power down and lock out the spindle before inserting or removing the end mill from the toolholder. Confirm toolholder bore and collet size match the 1/2 inch shank diameter before clamping. Verify spindle direction is set to right-hand rotation before engaging the cut, and follow the machine tool manufacturer runout specifications for precision holders.