Harvey Tool 32308-C4 Ball End Mill 1/8 in 3 Flute Solid Carbide

Product Description

The HARVEY TOOL 32308-C4 is a miniature solid carbide ball end mill designed for high-precision finishing operations in hard materials, steel, stainless steel, and cast iron. The tool features a 1/8 inch (0.1250 inch) cutting diameter, a 5/8 inch length of cut, and a 3-flute variable helix spiral geometry at 20 degrees. The amorphous diamond PVD coating improves wear resistance and surface finish quality in demanding applications. The single-end, right-hand cutting configuration with a straight cylindrical shank makes it a standard fit for precision CNC milling operations. Machinists and tool-and-die professionals working in tight-tolerance environments rely on this geometry for detail work and finishing passes.

This end mill is suited for miniature and micro-milling applications in residential tooling, mold and die, medical component, and aerospace part production environments. The long flute series designation indicates extended reach capability relative to diameter, making it appropriate for pocketing, profiling, and contouring in confined features. Primary workpiece material designation is hard material (H), with secondary compatibility covering steel (P), stainless steel (M), and cast iron (K) material classifications. It is sold as a single-end tool in individual unit packaging.

Key Features

• 1/8 inch ball nose diameter with plus 0.0000 inch / minus 0.0020 inch diameter tolerance for tight-tolerance finishing
• 3-flute variable helix spiral geometry at 20 degrees reduces chatter and improves chip evacuation
• Amorphous diamond PVD coating enhances wear resistance in hard and abrasive workpiece materials
• Long flute series provides 5/8 inch reach length for deep pocket and confined-feature access
• Solid carbide construction delivers rigidity and edge retention at miniature diameters
• Right-hand cut and right-hand flute direction for standard CNC spindle compatibility

Compatibility

Designed for use in CNC machining centers and high-speed milling applications targeting hard materials, steel, stainless steel, and cast iron. Part of the Harvey Tool Miniature End Mills - Ball - Long Flute series.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Use a properly sized collet or end mill holder matching the 1/8 inch shank diameter to maintain runout tolerances appropriate for finishing work. At miniature diameters, excessive overhang beyond the stated reach length can increase deflection and risk tool breakage.