Harvey Tool 74031-C4 Ball End Mill 0.031 in 2 Flute Carbide

Product Description

The HARVEY TOOL 74031-C4 is a miniature solid carbide ball end mill designed for high-precision milling in non-ferrous metals and similar materials. With a 0.031 inch cutting diameter and a 0.093 inch length of cut, this tool is built for fine detail work where tight tolerances are critical. The amorphous diamond PVD coating reduces friction and extends tool life in abrasive applications. It features a 2-flute, single-end configuration with a 30-degree right-hand helical flute geometry, making it suitable for both roughing and finishing passes in one setup. Machinists and tool-and-die professionals working on micro-scale features rely on tools in this class for consistent, repeatable results.

This end mill is intended for use on CNC machining centers handling non-ferrous metals such as aluminum, copper, brass, and composites. The stub and standard miniature series format makes it a practical choice for tight-clearance pockets, contoured surfaces, and small-radius 3D profiles. The 0.125 inch straight cylindrical shank fits standard collet systems commonly found in vertical machining centers and high-speed spindles. Its compact 1.5 inch overall length keeps deflection minimal at this diameter.

Key Features

• 0.031 inch ball end cutting diameter with plus or minus 0.0005 inch diameter tolerance for precision fitment
• Amorphous diamond PVD coating optimized for non-ferrous metal and abrasive material applications
• 2-flute, right-hand cut and right-hand helical geometry at 30 degrees for efficient chip evacuation
• Solid carbide construction provides rigidity and wear resistance at miniature scale
• Single-end design with 0.093 inch reach length and 0.0155 inch nose radius for accurate ball-form profiling
• No extended reach, no coolant-through, no chipbreaker — straightforward stub configuration for standard CNC setups

Compatibility

Designed for use in CNC machining applications involving non-ferrous metals. The 0.125 inch straight cylindrical shank is compatible with standard ER and precision collet toolholding systems. Intended for single-end use in vertical or high-speed machining centers equipped for miniature end mill work.

Installation Notes

Installation should be performed by a qualified machinist familiar with miniature tooling setup. Ensure the spindle and toolholder are clean and free of debris before seating the shank, as contamination at this diameter scale can cause runout and premature tool failure. Verify collet size matches the 0.125 inch shank before tightening. Handle miniature carbide tooling with care — carbide is brittle and can chip if dropped or impacted against hard surfaces.