Osg 412-2500-BN Ball End Mill 0.25in 2 Flute Carbide

Product Description

The OSG 412-2500-BN is a solid carbide ball end mill designed for precision milling of contoured surfaces, 3D profiles, and radius features. It runs a 0.25 inch diameter with a 0.125 inch nose radius and a 0.5 inch length of cut. The micrograin carbide construction provides the edge stability needed for both roughing and finishing passes in a single setup. The 30-degree medium helix angle promotes efficient chip evacuation while maintaining a clean cut edge. Sold as a single-end tool with a straight cylindrical shank, this mill is suited for CNC machining centers and manual mills where consistent dimensional control is required.

This end mill is intended for use across a broad range of workpiece materials including steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and hard materials. It is well suited to die and mold work, aerospace component finishing, and general-purpose contouring where a ball-nose profile is required. The uncoated bright finish makes it easy to inspect for wear. Its standard length configuration fits common toolholding setups without the need for extended-reach adapters.

Key Features

• 0.25 inch mill diameter with 0.125 inch nose radius for precise ball-end profiling
• Micrograin solid carbide construction for rigidity and edge retention
• 2-flute, right-hand helical design with 30-degree helix angle for efficient chip flow
• Handles both roughing and finishing operations in a single tool
• Uncoated bright finish allows easy visual wear inspection
• Straight cylindrical shank with tight tolerance fits standard toolholding systems

Compatibility

Rated for use on steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and hard materials. Compatible with standard 1/4 inch collet and milling chuck toolholders on CNC and manual milling machines.

Installation Notes

Installation and tool changes should be performed by a qualified machinist or CNC operator with the machine in a full stop and lockout state. Ensure the shank is fully seated and properly torqued in the toolholder per the toolholder manufacturer's specification. Inspect the collet or chuck for wear before seating the tool, as shank runout directly affects surface finish and tool life. Follow shop-specific feeds and speeds guidelines for the workpiece material being cut.