Accupro 38851994 Ball End Mill 3/8 in 4 Flute Solid Carbide

Product Description

The ACCUPRO 38851994 is a solid carbide ball end mill designed for precision milling operations across a wide range of materials. With a 3/8-inch diameter and a 4-flute configuration, this single-end tool delivers efficient material removal and a fine surface finish in both roughing and finishing passes. The AlTiCrN coating provides high heat resistance and extended tool life when cutting hardened steels, stainless, and other demanding workpiece materials. The variable index geometry reduces chatter and vibration during cut, improving dimensional accuracy. At 3 inches overall length with a 3/8-inch shank diameter, the 38851994 fits standard ER and end-mill-style toolholders found on most vertical machining centers and CNC mills.

This ball end mill is suited for 3D contouring, profiling, and finishing cuts in die and mold work, aerospace components, and general precision machining environments. The 0.3490-inch length of cut and 1.0000-inch neck length make it appropriate for moderate-depth cavity work where tool overhang and rigidity are critical. It is installed and used by machinists and CNC operators in job shops, production facilities, and toolroom settings where close-tolerance milled features are required.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding cuts
• AlTiCrN coating extends tool life in high-heat and abrasive cutting conditions
• 4-flute design balances chip evacuation with surface finish quality
• Variable index geometry reduces harmonic chatter during milling operations
• Single-end configuration with 3/8-inch shank fits standard toolholders
• 1.0000-inch neck length supports moderate-depth cavity and contour work

Compatibility

Designed for use in standard 3/8-inch end-mill toolholders and ER collet systems on vertical machining centers and CNC milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is in an appropriate safe state before changing tooling. Seat the shank fully into the toolholder to the recommended engagement depth and torque the retention mechanism per the toolholder manufacturer specifications. Verify runout with a dial indicator before beginning a production cut to avoid premature tool wear or dimensional error.