Harvey Tool 860708-C3 Ball End Mill 1/8 in 3 Flute Altin Carbide

Product Description

The HARVEY TOOL 860708-C3 is a solid carbide ball end mill designed for precision milling in steel, stainless steel, and cast iron. With a 1/8 inch mill diameter and a 3-flute spiral geometry, this tool delivers a balance of rigidity and chip evacuation suited to both roughing and finishing passes. The AlTiN PVD coating provides thermal resistance and extended tool life in ferrous materials. The 30-degree right-hand helix supports efficient cutting action in tight-tolerance work. This end mill is used by machinists and tool-and-die professionals operating CNC machining centers and manual mills where access to confined features requires extended reach with minimal deflection.

This end mill fits applications where long reach into pockets, slots, or recesses is required while maintaining a stub flute length for stiffness. The 3/4 inch reach length and 0.563 inch neck length allow the tool to access deep features without sacrificing rigidity. Primary workpiece materials include steel, stainless steel, and cast iron. The straight-cylindrical shank seats in standard ER or end mill holders with a 1/8 inch bore. Single-end configuration means the cutting geometry is on one end only. This tool is part of the Harvey Tool Miniature End Mills - Ball - Long Reach, Stub Flute series.

Key Features

• 1/8 inch mill diameter with a 0.0625 inch nose radius for true ball-end profile
• 3-flute solid carbide construction for rigidity in ferrous and hard materials
• AlTiN PVD coating for heat resistance and extended tool life in steel and stainless
• 30-degree right-hand spiral helix for smooth cutting action and chip flow
• Long reach design: 3/4 inch reach length with 0.563 inch neck for deep-feature access
• Stub flute (3/16 inch LOC) reduces deflection while maintaining reach capability

Compatibility

Designed for use in CNC machining centers and manual mills with 1/8 inch bore end mill holders or ER collets. Rated for primary workpiece materials steel, stainless steel, and cast iron (ISO material codes P, M, K). Part of the Harvey Tool Miniature End Mills - Ball - Long Reach, Stub Flute series.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool from the holder. Seat the straight-cylindrical shank fully in the collet or end mill holder and torque the retention hardware per the holder manufacturer specification. Verify runout after tool change before engaging the workpiece, particularly given the miniature diameter and extended reach geometry.