Accupro 311179 Ball End Mill 1/4 in 4 Flute Solid Carbide

Product Description

The ACCUPRO 311179 is a solid carbide ball end mill designed for high-performance milling in ferrous and hard materials. With a 1/4 inch cutting diameter and four flutes, this single-end tool delivers efficient material removal while maintaining tight surface finish tolerances. The AlTiCrN coating provides elevated heat resistance and extended tool life in demanding applications. The 38-degree right-hand helix promotes aggressive chip evacuation and smooth cutting action. This end mill is sized for standard CNC machining centers and manual mills used in tool rooms, job shops, and production environments. It is installed and operated by machinists and CNC programmers working with precision milling equipment.

The 311179 suits finishing and semi-finishing operations on contoured surfaces, cavities, and 3D profiles. The ball nose geometry makes it well-suited for die and mold work, complex part features, and slotting in materials where a full-radius tip is required. The standard shank diameter of 1/4 inch fits common collets and end mill holders. The variable index design helps reduce harmonic chatter during cuts, making it effective in both roughing passes with light depths and finish passes requiring dimensional accuracy.

Key Features

• AlTiCrN coating for high heat resistance and extended tool life in hard and abrasive materials
• 4-flute configuration with variable index for chatter reduction and improved surface finish
• 38-degree right-hand helix for efficient chip evacuation
• Micrograin solid carbide construction for rigidity and wear resistance
• Ball nose geometry for 3D contouring, die work, and full-radius milling
• Straight cylindrical shank compatible with standard collets and end mill holders

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC machining centers and manual mills accepting a 1/4 inch straight cylindrical shank in the HS series configuration.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool holding and runout. Ensure the spindle and tool holder are clean and free of chips before seating the shank. Verify runout with a dial indicator before beginning cuts. Follow shop safety procedures including guarding and proper RPM and feed rate programming for carbide tooling.