Accupro 12177589 Tapered Ball End Mill 3/16 in Solid Carbide

Product Description

The ACCUPRO 12177589 is a solid carbide tapered ball end mill designed for precision milling of contoured surfaces, deep-cavity work, and 3D profiling in metalworking and toolmaking applications. It features a 3/16-inch small end diameter, a 1.5-degree taper per side, and a 1-1/4-inch length of cut. The ball end geometry with a 3/32-inch nose radius produces smooth, accurate radii on finished surfaces. With three right-hand spiral flutes ground from micrograin solid carbide, this tool delivers rigidity and edge retention in demanding cuts. It is centercutting, allowing plunge entry. An uncoated finish makes it suited for use with cutting fluids or in applications where coating is not specified.

This tapered ball end mill is used in CNC machining centers and manual mills for contouring, die and mold work, and finishing passes in ferrous and non-ferrous materials. The 1.5-degree-per-side taper allows access into angled walls and draft-angle cavities without interference. The 1/4-inch straight shank fits standard ER collet chucks and end mill holders. It is typically operated by machinists and tool-and-die professionals in job shop, mold shop, and production environments.

Key Features

• 1.5 degrees taper per side for angled-wall and draft-cavity milling
• Ball end with 3/32-inch nose radius for smooth 3D surface contouring
• 3 right-hand spiral flutes with 30-degree helix angle for efficient chip evacuation
• Micrograin solid carbide construction for edge retention and rigidity
• Centercutting geometry allows direct plunge entry
• Uncoated finish suitable for use with cutting fluids

Compatibility

Designed as an OEM-style solid carbide tapered ball end mill fitting standard 1/4-inch shank end mill holders and ER collet chucks used in CNC and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist following standard toolholder torque and runout procedures. Ensure the machine spindle is fully stopped and locked before installing or removing the tool. Seat the shank fully in the collet or holder to the recommended insertion depth to avoid pullout under load. Verify runout with a dial indicator before beginning a cut, as excessive runout will reduce tool life and surface finish quality.