Harvey Tool 24631-C4 Ball End Mill 0.031in 4 Flute Carbide

Product Description

The HARVEY TOOL 24631-C4 is a miniature solid carbide ball end mill designed for precise material removal in non-ferrous metals and similar workpiece materials. With a 0.031-inch cutting diameter and four helical flutes, this single-end mill delivers both roughing and finishing capability in a compact stub-length geometry. The 30-degree helix angle promotes efficient chip evacuation while the amorphous diamond PVD coating reduces friction and extends tool life when cutting aluminum, copper, brass, and other non-ferrous alloys. Machinists and toolroom operators working in high-precision milling applications will find this tool well-suited for tight-tolerance work in small-scale components.

This end mill is built for close-tolerance milling operations where a small-diameter ball profile is required. Its stub-length configuration provides added rigidity, reducing deflection in light-depth passes on CNC machining centers and manual mills. The 0.046-inch length of cut limits its reach intentionally, making it optimal for shallow pocket milling, contouring, and surface finishing on small parts. The 1/8-inch straight cylindrical shank fits standard collet systems commonly used in high-speed spindles and precision tool holders.

Key Features

• 0.031-inch ball end cutting diameter with a 0.0155-inch nose radius for accurate profiling
• Four helical flutes with 30-degree helix angle for smooth chip flow in non-ferrous materials
• Amorphous diamond PVD coating reduces tool wear and improves surface finish on soft metals
• Stub-length geometry increases rigidity and minimizes deflection at small diameters
• Single-end, right-hand cut with right-hand flute direction for standard CNC spindle compatibility
• Solid carbide construction throughout for dimensional stability and cutting edge durability

Compatibility

Designed for use in CNC machining centers and precision manual mills equipped with collet systems accepting a 1/8-inch straight shank. Primary workpiece material designation is non-ferrous metal.

Installation Notes

This tool should be installed by a qualified machinist or toolroom technician. Ensure the spindle is fully stopped and the machine is in a safe state before inserting or removing the end mill from the collet. Use a properly sized, clean collet and torque the collet nut according to the tool holder manufacturer specifications. At this diameter, tool runout must be minimized — verify TIR with an indicator before initiating a cut.