Helical Solutions 82489 Ball End Mill 1/4 in 3 Flute Carbide

Product Description

The HELICAL SOLUTIONS 82489 is a 3-flute solid carbide ball end mill designed for high-efficiency machining of aluminum alloys and non-ferrous materials. It features a 1/4 inch cutting diameter, a 3/8 inch length of cut, and a 40-degree high helix angle that promotes aggressive chip evacuation in softer, gummy materials. The variable index flute spacing reduces harmonic vibration during cuts, improving surface finish at higher feed rates. A reduced neck profile extends reach to 1.375 inches while maintaining rigidity. This tool is intended for use by machinists and CNC operators in production and job shop environments.

This end mill is suited for slotting, profiling, and finishing operations on aluminum, brass, copper, and similar non-ferrous workpiece materials. The stub-length classification and straight cylindrical shank make it compatible with standard ER and straight-bore toolholders. The single-end, right-hand cut geometry is appropriate for conventional CNC vertical and horizontal machining centers. Extended reach capability makes it useful in pocketing and contoured surface applications where clearance from the spindle nose is required.

Key Features

• 3-flute solid carbide construction for strength and wear resistance in non-ferrous applications
• 40-degree high helix angle promotes efficient chip evacuation in aluminum and soft metals
• Variable index pitch reduces chatter and harmonic vibration during high-speed passes
• Reduced neck diameter of 0.237 inches enables extended reach of 1.375 inches
• Bright/uncoated finish maintains sharp edge geometry suitable for aluminum alloys
• h6 tolerance on both mill diameter and shank diameter for consistent toolholder fit
• Capable of both roughing and finishing material removal in a single tool

Compatibility

Designed for machining aluminum alloys and non-ferrous metals. Straight cylindrical shank fits standard ER collet chucks and straight-bore toolholders accepting 1/4 inch shank diameters.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and machine power isolated per shop safety procedures. Ensure the toolholder bore is clean and free of chips before seating the shank; verify runout does not exceed the 0.0003 inch TIR maximum specification after clamping. Consult the machine tool manufacturer and applicable feeds-and-speeds data for the specific workpiece material before beginning a cut. Do not use this tool on ferrous materials, as the geometry and uncoated finish are optimized exclusively for non-ferrous applications.