Accupro 12177672 Tapered Ball End Mill 1/4 in 3 Flute Carbide

Product Description

The ACCUPRO 12177672 is a solid carbide tapered ball end mill designed for precision milling operations requiring a controlled taper geometry. With a 10-degree taper angle per side and a 1/4-inch small end diameter, this tool produces tapered walls, 3D contour profiles, and blended radii in a single pass. The ball end configuration features a 1/8-inch nose radius for smooth surface finishes on curved surfaces. Three right-hand spiral flutes with a 30-degree helix angle promote efficient chip evacuation and reduce cutting forces. Centercutting capability allows plunge entry directly into the workpiece. The micrograin carbide substrate provides hardness and wear resistance suited for ferrous and non-ferrous materials.

This end mill is used in CNC machining centers for die and mold work, aerospace contouring, and precision part finishing where tapered sidewalls are required. The 1-1/4-inch length of cut accommodates moderate-depth passes, while the 3/4-inch shank diameter and 4-inch overall length provide rigidity in standard end mill holders and collet chucks. The uncoated finish makes it well-suited for aluminum, brass, copper, and plastics where coating adhesion or chemical reaction is a concern. Machinists and tooling technicians working in job shops, production environments, or tool rooms will find this geometry useful for finishing tapered cavities and complex profiles.

Key Features

• 10-degree taper angle per side for precise tapered wall geometry
• Ball end with 1/8-inch nose radius for smooth contoured surface finishes
• 3 right-hand spiral flutes with 30-degree helix for efficient chip removal
• Micrograin solid carbide construction for hardness and long tool life
• Centercutting design allows direct plunge entry into the workpiece
• Uncoated finish suitable for non-ferrous metals and plastics

Compatibility

Designed as a standard shank tapered ball end mill compatible with CNC machining centers and manual mills using 3/4-inch end mill holders or collet chucks.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before seating the shank. Verify runout after tool installation using an indicator before beginning a cut. Follow the machine manufacturer and tooling supplier recommended feeds and speeds for the workpiece material and depth of cut.