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The OSG 3131806 is a solid carbide square end mill designed for high-precision milling in demanding machining environments. With a 0.0315-inch cutting diameter and a 0.0472-inch length of cut, this tool is built for micro-milling operations where tight tolerances and controlled material removal are critical. The 0.1575-inch shank diameter seats securely in standard collet chucks. A 30-degree helix angle combined with a two-flute, right-hand cut geometry promotes efficient chip evacuation and reduces cutting forces. The WXL coating extends tool life in abrasive materials. Machining professionals and CNC operators working with small-diameter end mills in production or prototype environments will find this tool suited to their requirements.
This end mill is appropriate for precision milling of ferrous and non-ferrous materials in CNC machining centers and high-speed spindle setups. Its micrograin carbide construction supports fine surface finishes at elevated speeds. The extended reach design allows access to recessed features and deep pockets. Center-cutting capability enables direct plunging without a pre-drilled entry point, which simplifies multi-axis toolpaths in tight workspaces.
Designed as a direct-fit replacement end mill for CNC machining centers and high-speed spindles accepting a 0.1575-inch shank diameter in standard collet or end mill holders.
Installation should be performed by a qualified CNC machinist or tooling technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully and evenly in the collet holder to the recommended gauge-line depth per the holder manufacturer's guidelines. Inspect the cutting edges under magnification before use, as micro-diameter carbide tools are susceptible to chipping during handling.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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