Harvey Tool 34220-C3 Ball End Mill 0.50mm 3 Flute Solid Carbide

Product Description

The HARVEY TOOL 34220-C3 is a miniature ball end mill designed for precision milling in tight geometries and deep-cavity applications. Built from solid carbide with a physical vapor deposition (PVD) AlTiN coating, this single-end tool delivers hardness and thermal resistance suited for cutting steel, stainless steel, and cast iron. The 0.50 mm (0.0200 inch) mill diameter pairs with a 0.0100-inch nose radius and a 30-degree right-hand spiral helix to produce clean, accurate profiles. A stub flute configuration keeps the cutting length at 0.0300 inches, while the extended reach design provides a 0.1600-inch reach length for accessing recessed features.

This end mill is engineered for high-precision machining environments where miniature tooling is required. The long-reach, stub-flute geometry makes it well suited for die and mold work, medical component manufacturing, and aerospace part finishing where fine detail and dimensional control are critical. It handles both roughing and finishing passes in ferrous and hard materials. The 1/8-inch straight cylindrical shank and 2.5-inch overall length allow it to seat in standard collet chucks without special toolholders.

Key Features

• 0.50 mm (0.0200 inch) ball nose diameter with 0.0100-inch nose radius for fine detail work
• AlTiN PVD coating provides thermal resistance and extended tool life in ferrous materials
• 3-flute, 30-degree right-hand spiral helix balances chip evacuation and surface finish
• Extended long-reach design with 0.1600-inch reach length for deep or recessed features
• Stub flute length (0.0300 inches LOC) reduces deflection and improves rigidity at small diameters
• Solid carbide construction supports higher feed rates and tighter tolerances than HSS alternatives

Compatibility

Designed for use in CNC machining centers with standard 1/8-inch collet or toolholder systems. Primary workpiece materials are 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 requires a CNC machinist or toolroom operator with a calibrated collet chuck rated for 1/8-inch shank tooling. Confirm runout at the tool tip before cutting, as runout errors are proportionally larger relative to the 0.50 mm diameter. Ensure the spindle and toolholder are clean and free of debris before seating. Do not exceed the tool manufacturer's recommended speeds and feeds for the specific workpiece material and depth of cut.