Harvey Tool 34116 Ball End Mill 0.25 in 4 Flute Solid Carbide

Product Description

The HARVEY TOOL 34116 is a solid carbide ball end mill designed for finishing operations in hard materials, steel, stainless steel, and cast iron. The tool features a 0.25 inch diameter, a 2 inch length of cut, and a 4 inch overall length with a straight-cylindrical 0.25 inch shank. It runs four helical flutes in a right-hand cutting and flute direction with a variable helix angle, which reduces chatter and promotes smooth chip evacuation during finishing passes. The bright uncoated carbide construction makes it well suited for high-precision milling where surface finish is the primary goal. This is a single-end, long-flute configuration built for tight-tolerance work.

The 34116 belongs to the Harvey Tool Miniature End Mills - Ball - Long Flute series and is intended for finishing cuts in hard materials rated H, as well as secondary materials including steel (P), stainless steel (M), and cast iron (K). The long flute and 2 inch reach length allow access to deeper pockets and contoured surfaces that shorter end mills cannot reach. It is suited for use in CNC machining centers and high-speed milling applications in tool and die, mold making, aerospace, and precision fabrication environments. The 0.125 inch nose radius produces smooth, accurate ball-end profiles.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and ferrous materials
• Variable helix angle reduces chatter and improves surface finish during finishing passes
• Long flute configuration with 2 inch length of cut and 2 inch reach for deep pocket and contoured surface access
• Four right-hand helical flutes promote efficient chip evacuation
• Bright uncoated finish suitable for high-precision finishing where coating buildup is not acceptable
• Straight-cylindrical shank with h6 tolerance for secure toolholder grip

Compatibility

Designed as an OEM-style replacement and direct-fit cutting tool for CNC machining centers accepting a 0.25 inch straight-cylindrical shank. Compatible with standard collet chucks, end mill holders, and shrink-fit holders sized for 1/4 inch shanks.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. The machine spindle must be fully stopped and locked out before inserting or removing the tool from the holder. Ensure the shank is fully seated and the holder is torqued to the toolholder manufacturer specification. Confirm runout with a dial indicator before beginning a cut, as excessive runout will reduce tool life and degrade surface finish on finished workpieces.