Walter-prototyp 8415105 Corner Radius End Mill 1/4in 5 Flute

Product Description

The WALTER-PROTOTYP 8415105 is a solid carbide corner radius end mill engineered for demanding metal removal in steel, cast iron, stainless steel, superalloys, and titanium. It carries a 0.0150-inch corner radius on a 1/4-inch diameter cutter with five flutes and a 38-degree helix angle, delivering a balance of surface finish and material removal rate in a single-end configuration. The TiAlN/THL dual coating, designated WJ30TF in the Walter proprietary system, provides thermal resistance and wear protection in high-speed cutting environments. Licensed machinists and CNC operators specify this tool for roughing and finishing passes where edge integrity on difficult alloys is critical.

This end mill fits standard 1/4-inch straight-cylindrical shank toolholders with an h6 shank diameter tolerance, making it compatible with collet chucks, hydraulic holders, and shrink-fit systems commonly found in CNC machining centers. The 3/4-inch length of cut and 2-1/2-inch overall length suit it for shallow-to-moderate-depth pockets, profiling, and contouring operations on steel and ferrous alloys. The 1.3976-inch reach length provides clearance for light-depth work on stepped or offset features. This tool is part of the Walter MA230.A-5-R-C series and is cataloged under manufacturer number MA230.6.35A5D038E-WJ30TF.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous and exotic alloy cutting
• TiAlN/THL (WJ30TF) coating provides high-temperature oxidation resistance and extended tool life
• Five-flute geometry supports both roughing and finishing in a single tool
• 38-degree helix angle promotes smooth chip evacuation and reduced cutting forces
• Right-hand cut, right-hand flute configuration for standard spindle rotation
• h6 shank tolerance ensures precise fit in collet and hydraulic toolholders

Compatibility

Designed for use in CNC machining centers and manual mills with 1/4-inch straight-cylindrical collet or hydraulic toolholders. Primary workpiece material is steel (ISO material code P); secondary materials include cast iron (K), stainless steel (M), and superalloys and titanium (S). Part of the Walter MA230.A-5-R-C series.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank to the full recommended insertion depth in the toolholder and torque the collet nut or clamping mechanism per the toolholder manufacturer's specifications. Verify runout with a dial indicator after clamping before initiating a cutting program.