Harvey Tool 32278 Ball End Mill 5/64 in 3 Flute Carbide

Product Description

The HARVEY TOOL 32278 is a solid carbide, single-end ball end mill designed for high-precision milling in hard materials, steel, stainless steel, and cast iron. With a 5/64 inch (0.0780 inch) mill diameter and a 13/32 inch length of cut, this tool is built for miniature, long-flute applications where reach and accuracy are critical. The 3-flute geometry with a variable helix angle of 20 degrees promotes chip evacuation and reduces chatter during finishing operations. Machining professionals and tool-and-die shops use this end mill for tight-tolerance work where a standard-length tool cannot access the required depth.

This end mill is suited for finishing operations in hard materials and secondary workpiece materials including steel, stainless steel, and cast iron. Its long-flute, miniature profile makes it appropriate for deep-cavity milling, contour work, and intricate part features on CNC machining centers. The bright, uncoated finish is compatible with a range of cutting fluids and is typical for carbide tooling used in precision finishing passes where surface finish quality is the priority.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard material applications
• Variable helix angle (20 degrees) reduces vibration and improves surface finish
• 3-flute, spiral flute design optimized for finishing material removal
• Long-flute geometry provides extended reach for deep-cavity and contour milling
• Bright, uncoated finish compatible with standard cutting fluids
• Straight-cylindrical shank with h6 tolerance for consistent tool holding

Compatibility

Designed for use in CNC machining centers and manual mills with a 1/8 inch straight-cylindrical collet or tool holder. Primary workpiece material is hard material; secondary workpiece materials include steel, stainless steel, and cast iron. Part of the HARVEY TOOL Miniature End Mills - Ball - Long Flute series.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the 1/8 inch shank fully into the collet and torque the collet nut according to the tool holder manufacturer specification. Verify runout with a dial indicator before beginning a cutting pass, as runout is especially critical at this diameter.