Accupro 311201 Ball End Mill 3/8 in 4 Flute Solid Carbide

Product Description

The ACCUPRO 311201 is a solid carbide ball end mill designed for precision milling operations in ferrous and hardened materials. With a 3/8 inch diameter and four flutes, this single-end tool delivers efficient material removal and a fine surface finish in demanding cutting conditions. The AlTiCrN coating provides high heat resistance and extended tool life under aggressive feed rates. A 38-degree helix angle and variable index flute spacing reduce chatter and improve chip evacuation. This tool is sized for standard toolholders and is installed by machinists and CNC operators in job shop and production environments.

Suited for contour milling, profiling, and 3D surface work in steel, stainless steel, and hardened alloys. The 1 inch length of cut supports moderate depth-of-cut applications without requiring extended-reach tooling. With an overall length of 2.5 inches and a straight cylindrical 3/8 inch shank, the 311201 fits directly into standard collet chucks and end mill holders. The micrograin carbide substrate provides the rigidity needed for tight-tolerance work in both roughing and finishing passes at elevated spindle speeds.

Key Features

• AlTiCrN coating for high-temperature wear resistance and extended tool life
• 4-flute, single-end ball nose geometry for contour and 3D surface milling
• 38-degree helix angle promotes smooth cutting action and efficient chip flow
• Variable index flute spacing reduces harmonic vibration and chatter
• Micrograin solid carbide substrate for rigidity in hardened and abrasive materials
• Straight cylindrical shank fits standard collet chucks and end mill holders

Compatibility

Designed as an OEM-style replacement or direct-application solid carbide ball end mill in the ACCUPRO HS Series, compatible with standard 3/8 inch collet chucks and end mill holders used in CNC machining centers and manual milling machines.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and the toolholder is clean and free of debris before seating the shank. Verify runout with a dial indicator after clamping to confirm proper seating and minimize tool deflection. Follow machine manufacturer torque specifications for the collet nut or set screw when securing the tool.