Accupro 12177578 Tapered Ball End Mill Solid Carbide 3 Flute

Product Description

The ACCUPRO 12177578 is a tapered ball end mill designed for precision milling of contoured surfaces, cavities, and complex 3D profiles in CNC machining operations. Built from micrograin solid carbide, it delivers consistent cutting performance and wear resistance across a range of workpiece materials. The ball end geometry produces smooth, accurate radial profiles, while the 1/4 inch small end diameter and 1-1/4 inch length of cut make it well-suited for detail work in confined areas. With a 5/16 inch shank diameter and 3 inch overall length, it fits standard ER and end mill holders used in vertical machining centers and multi-axis CNC setups. Installation and use are handled by machinists and CNC programmers in tool-and-die, mold-making, and precision manufacturing environments.

This tapered end mill is used in applications that require controlled taper geometry along the flute, such as mold cavities, core features, electrodes, and drafted walls. The 1 degree taper per side combined with the ball nose makes it a go-to tool for finishing passes on sculpted surfaces. The 30 degree helix angle and right-hand spiral flute configuration support smooth chip evacuation in both ferrous and non-ferrous materials. The uncoated finish suits applications where coating is not required or where re-sharpening is anticipated.

Key Features

• Micrograin solid carbide construction for rigidity and extended tool life
• Ball end geometry with 1/8 inch nose radius for smooth contour milling
• 1 degree taper per side for accurate drafted walls and cavity features
• 3 right-hand spiral flutes with 30 degree helix angle for efficient chip removal
• Centercutting capable for plunge entry into workpiece material
• Uncoated finish compatible with a wide range of materials and regrind applications

Compatibility

Designed as an OEM-style replacement or direct selection for CNC machining centers accepting a 5/16 inch shank diameter end mill holder or collet chuck.

Installation Notes

This tool is installed by machinists or CNC setup technicians using an appropriate collet or end mill holder sized for the 5/16 inch shank. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify runout with a dial indicator after seating the tool, as excessive runout reduces tool life and surface finish quality. Follow the machine tool manufacturer guidelines for feed rate, spindle speed, and depth of cut for the specific workpiece material.