Osg 91400311 Square End Mill 0.1181 in 6 Flute Carbide

Product Description

The OSG 91400311 is a solid carbide square end mill from OSG Series 9140, designed for precision milling in metalworking and machining applications. It features a 0.1181-inch cutting diameter, a 0.315-inch length of cut, and a 0.2362-inch shank diameter. Six spiral flutes at a 45-degree helix angle promote efficient chip evacuation and smooth cutting action at higher feed rates. The WXS coating improves surface hardness and wear resistance, extending tool life in demanding materials. The micrograin carbide substrate provides rigidity and edge retention in close-tolerance work. This single-end configuration is installed and used by CNC machinists and tool-and-die professionals.

This end mill is suited for finish and semi-finish milling operations on ferrous and non-ferrous materials where a small-diameter, high-flute-count tool is required. The regular-length body and 45-degree helix make it effective for slotting, profiling, and peripheral milling in machining centers and CNC mills. Center-cutting geometry allows plunge entry where the operation calls for it. The right-hand cut and right-hand flute configuration is standard for conventional CNC spindle rotation.

Key Features

• Six spiral flutes with 45-degree helix angle for efficient chip evacuation and reduced cutting forces
• WXS coating increases surface hardness and extends tool life in wear-intensive cuts
• Micrograin solid carbide substrate delivers rigidity and sharp edge retention
• Center-cutting design permits direct plunge entry without pre-drilling
• Right-hand cut and right-hand flute for standard CNC spindle compatibility
• Regular length with 0.2362-inch shank for stable tool holding in standard collets and end mill holders

Compatibility

Designed as an OEM-specification solid carbide square end mill within the OSG Series 9140 product family. Compatible with standard end mill holders, ER collets, and shrink-fit tooling systems accepting a 0.2362-inch (6 mm) shank diameter.

Installation Notes

Installation is performed by a qualified CNC machinist or toolroom technician. Ensure the machine spindle is fully stopped and the tool changer or spindle is locked before installing or removing the end mill. Verify shank runout with an indicator after seating in the holder, as excessive runout on a small-diameter tool accelerates edge wear and can cause tool breakage. Follow the machine tool manufacturer guidelines for toolholder torque and projection length.