Osg 91400811 Square End Mill 0.315 in 6 Flute Solid Carbide

Product Description

The OSG 91400811 is a solid carbide square end mill designed for high-performance milling in demanding machining environments. Built on OSG Series 9140, this tool features six flutes with a 45-degree helix angle and a right-hand spiral flute configuration, producing efficient chip evacuation and smooth surface finishes. The EXO coating provides enhanced wear resistance and heat reduction at the cutting edge. With a 0.315-inch cutting diameter and a 0.748-inch length of cut, this end mill is suited for slotting, profiling, and finish passes in ferrous and non-ferrous materials. Micrograin carbide construction delivers consistent edge integrity across extended run times. Licensed machinists and CNC operators are the primary installers of this tooling.

This end mill fits standard toolholding systems that accept an 0.315-inch shank diameter, including collet chucks and shrink-fit holders commonly found on vertical and horizontal machining centers. The regular length profile and non-extended-reach geometry make it appropriate for general-purpose cavity and contour milling at moderate depths. It is centercutting, allowing plunge entry where required. Typical applications include die and mold work, fixture machining, and production part milling where a 6-flute finish geometry is specified.

Key Features

• Solid micrograin carbide construction for superior edge retention and rigidity
• 45-degree helix angle promotes smooth cutting action and reduced chatter
• Six-flute design increases feed rate potential and improves surface finish
• EXO coating enhances thermal resistance and extends tool life
• Centercutting geometry permits direct plunge milling
• Right-hand cut and right-hand flute spiral for standard CNC spindle compatibility

Compatibility

Designed for use in toolholding systems accepting a 0.315-inch shank diameter; compatible with standard collet, shrink-fit, and milling chuck setups on CNC machining centers using Series 9140 tooling specifications.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down or placed in an e-stop state before changing tooling. Seat the shank to the full recommended gauge depth in the holder and verify runout with a dial indicator before beginning a cut. Follow the tool manufacturer and machine builder guidelines for appropriate speeds, feeds, and depth-of-cut parameters for the workpiece material.