Accupro 12179254 Ball End Mill 0.2188 in 4 Flute Carbide

Product Description

The ACCUPRO 12179254 is a solid carbide ball end mill designed for precision milling operations in ferrous and non-ferrous materials. With a 0.2188-inch (7/32) mill diameter and a 0.375-inch length of cut, this single-end tool handles contour milling, slotting, and profile work where a tight radius and controlled chip evacuation are critical. The 4-flute, 40-degree helix geometry promotes smooth cutting action and efficient chip flow. The nACRo coating provides thermal and oxidation resistance, extending tool life in demanding cutting conditions. Micrograin carbide substrate adds rigidity and edge retention. Licensed machinists and CNC tool-room operators are the primary users.

This end mill is suited for CNC machining centers and manual mills requiring a small-diameter ball nose profile. Typical applications include die and mold work, contour finishing passes, and 3D surface profiling in both hardened and unhardened steel, aluminum, and cast iron. The 1/4-inch shank diameter fits standard collet chucks and tool holders common in vertical machining centers. The compact 2-inch overall length keeps the tool rigid in shallow-reach setups.

Key Features

• 0.2188-inch (7/32) ball nose diameter for fine-detail contouring and profiling
• 4-flute configuration improves surface finish and feed rate capability
• 40-degree right-hand helix for efficient chip evacuation and reduced cutting forces
• nACRo coating delivers oxidation resistance and extended tool life in dry or semi-dry cutting
• Micrograin solid carbide substrate provides superior hardness and edge retention
• Single-end design with right-hand cutting direction for standard spindle rotation

Compatibility

Designed for use in standard 1/4-inch collet chucks, ER collet systems, and end mill holders on CNC vertical machining centers and manual knee mills requiring a ball nose profile.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Secure the 1/4-inch shank fully into the collet or tool holder to the recommended grip length before torquing. Verify spindle is at a complete stop and machine is in an energy-isolated state before changing tooling. Do not exceed the tool manufacturer's recommended speeds and feeds for the specific workpiece material and coating type.