Accupro 12177559 Tapered Ball End Mill 3/16 in Solid Carbide

Product Description

The ACCUPRO 12177559 is a solid carbide tapered ball end mill designed for precision milling of contoured surfaces, tapered slots, and complex 3D profiles. It features a 3/16 inch small end diameter, a 0.5 degree taper angle per side, and a 1-1/4 inch length of cut. The ball end geometry allows smooth interpolation along curved and ramped surfaces. Three right-hand spiral flutes in a micrograin carbide substrate deliver sharp cutting action and consistent chip evacuation. This tool ships uncoated and is center-cutting, allowing plunge entry. Machinists and CNC programmers working in job shops, mold and die operations, and precision manufacturing will find this a direct-fit solution for tight-tolerance work.

This end mill is suited for finish and semi-finish milling of hardened steels, alloy steels, stainless, aluminum, and non-ferrous materials where a tapered wall profile is required. The 1/4 inch shank diameter fits standard ER and precision collet chucks. The 3 inch overall length provides reach into moderate-depth cavities without sacrificing rigidity. Typical applications include mold cavities, die inserts, complex part geometry on vertical and horizontal machining centers, and multi-axis CNC operations.

Key Features

• Ball end geometry for smooth 3D contouring and ramped surface finishing
• 0.5 degree taper per side for precise tapered wall milling
• 3-flute right-hand spiral design with 30 degree helix angle for efficient chip evacuation
• Micrograin solid carbide substrate for wear resistance and edge retention
• Center-cutting capable — supports direct plunge entry
• Uncoated finish suitable for a wide range of workpiece materials

Compatibility

Designed as an OEM-style replacement or direct-use tapered ball end mill for standard 1/4 inch collet and ER-style toolholding systems used in CNC vertical machining centers and multi-axis milling applications.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the 1/4 inch shank fully and evenly in a clean, undamaged collet or toolholder and torque the retention nut to the toolholder manufacturer specification. Inspect the cutting edges for chips or damage before each use.