Osg 461-187511 Square End Mill 6 Flute Tialn Carbide

Product Description

The OSG 461-187511 is a solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. It features a 0.1875-inch cutting diameter, a 0.625-inch length of cut, and a 6-flute configuration that increases feed rates and improves surface finish compared to lower-flute-count tools. The micrograin carbide substrate provides hardness and wear resistance, while the TiAlN coating adds thermal protection for high-speed and dry cutting applications. This is a single-end, right-hand cut tool with a right-hand spiral flute and a 30-degree helix angle. Machinists and tool-and-die professionals working on CNC mills and machining centers are the primary installers.

The 461-187511 is suited for finish milling, slotting, and profiling operations in shop and production environments. Its 0.1875-inch shank diameter matches the cutting diameter, making it compatible with standard collet chucks and end mill holders sized for 3/16-inch tooling. The 2-inch overall length keeps the tool rigid during light-to-moderate depth cuts. It is appropriate for use on CNC vertical machining centers and manual knee mills where close-tolerance work is required. The centercutting geometry allows plunge entry, adding versatility to the tool's application range.

Key Features

• Micrograin solid carbide construction for hardness and extended tool life
• TiAlN coating supports high-speed and dry cutting by reducing thermal buildup at the cutting edge
• 6-flute design increases chip load per tooth and improves surface finish in finishing passes
• 30-degree helix angle balances cutting forces and chip evacuation in spiral flute geometry
• Centercutting capability allows direct plunge entry without pre-drilling
• Single-end configuration with right-hand cut and right-hand flute direction

Compatibility

Designed for use with standard 3/16-inch collet chucks and end mill holders on CNC machining centers and manual mills. Compatible with tooling setups calling for a 0.1875-inch shank diameter in the OSG Series 461 product family.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's spindle and toolholder torque procedures. Ensure the machine spindle is fully stopped and the control is in an e-stop or tool-change state before loading or unloading the tool. Verify collet condition and holder runout before seating the tool, as excessive runout accelerates wear on small-diameter carbide end mills. Follow applicable shop safety standards for guarding and chip containment during operation.