Osg 3105040 Ball End Mill 0.40mm 2 Flute Solid Carbide

Product Description

The OSG 3105040 is a solid carbide ball end mill engineered for high-performance milling in demanding materials. Designed as part of OSG's Series 3710 Exocarb WXL lineup, this single-end tool features a 0.40 mm cutting diameter and a 0.80 mm length of cut, making it well suited for fine detail work and micro-milling operations. The 2-flute, right-hand spiral geometry combined with a 30-degree helix angle promotes efficient chip evacuation and stable cutting action. A proprietary WXL PVD coating applied over an ultra-fine micrograin carbide substrate delivers hardness, heat resistance, and extended tool life across a wide range of workpiece materials. Machinists and tool-and-die professionals working in precision CNC environments are the primary users of this tool.

This end mill is rated for use in steel, stainless steel, cast iron, and hard materials as primary workpiece materials, and is also capable in non-ferrous metals and superalloys including titanium as secondary materials. With a 4.00 mm straight-cylindrical shank diameter and a 40.00 mm overall length, it mounts directly into standard collet chucks or tool holders compatible with 4 mm shank tooling. The Series 3710 platform is designed specifically with rigidity and geometry optimized for hard milling and finishing passes where dimensional accuracy and surface finish are critical.

Key Features

• 0.40 mm ball nose cutting diameter with a 0.20 mm nose radius for fine contour and detail milling
• WXL PVD coating over ultra-fine micrograin solid carbide substrate for hardness and wear resistance
• 2-flute, right-hand spiral flute geometry with 30-degree medium helix for balanced chip flow
• Rated for roughing and finishing operations across steel, stainless steel, cast iron, hard materials, non-ferrous metals, and superalloys
• 4.00 mm straight-cylindrical shank with h6 shank diameter tolerance for precise tool holder fitment
• Mill diameter tolerance of plus 0.005 mm / minus 0.005 mm for tight dimensional control

Compatibility

Designed for use in CNC machining centers and milling machines accepting a 4.00 mm straight-cylindrical shank. Suitable for steel, stainless steel, cast iron, hard materials, non-ferrous metals, and superalloys including titanium, as specified by OSG for the Series 3710 platform.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and locked out before inserting or removing the tool from the tool holder. Use a properly sized collet or tool holder rated for 4 mm shank tooling and verify runout is within acceptable limits before beginning a cut. Do not exceed the rated length of cut of 0.80 mm to avoid deflection or tool breakage on this micro-diameter end mill.