Osg 403-0625-BN11 Ball End Mill 1/16 in 3 Flute Tialn

Product Description

The OSG 403-0625-BN11 is a solid carbide ball end mill from the OSG 403BN series, designed for high-precision milling in demanding materials including steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and hard materials. It features a 1/16 inch (0.0625 inch) mill diameter with a TiAlN PVD coating that extends tool life under elevated cutting temperatures. The three-flute, right-hand spiral configuration supports both roughing and finishing operations. With a 30-degree medium helix angle and a nose radius of 0.0313 inches, this tool delivers clean ball-profile cuts at miniature scales where rigidity and tolerance consistency are critical.

This end mill is suited for CNC machining centers and milling applications where small-diameter, tight-tolerance work is required. The 403BN series is positioned as an economical solid carbide option built to OSG quality standards, making it appropriate for production shops managing tooling budgets without sacrificing dimensional consistency. Its straight-cylindrical shank accepts standard collet and end mill holders sized for a 1/8 inch shank. Typical applications include die and mold work, aerospace component machining, and precision part production involving hard or exotic workpiece materials.

Key Features

• TiAlN PVD coating for heat resistance and extended tool life in ferrous and hard materials
• 3-flute right-hand spiral design supports roughing and finishing in a single tool
• 30-degree medium helix angle for balanced chip evacuation and cutting force
• 0.0313 inch nose radius for accurate ball-profile geometry at 1/16 inch diameter
• Solid carbide construction for rigidity and minimal deflection at miniature diameters
• Mill diameter tolerance of +0.0000 / -0.0020 inches for consistent dimensional output

Compatibility

Compatible with workpiece materials including steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and hard materials (ISO material codes P, M, K, N, S, H). Accepts standard 1/8 inch straight-cylindrical collet holders.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician familiar with small-diameter end mill handling. Secure the straight-cylindrical shank in a properly sized collet or end mill holder, ensuring runout is minimized before cutting, as deflection is amplified at 1/16 inch diameters. Verify spindle speed and feed rate parameters against the material being cut before engaging the workpiece. Handle solid carbide tooling carefully to avoid chipping the cutting edges during setup and storage.