Osg 4551211 Corner Chamfer End Mill 0.75in 3 Flute Tialn

Product Description

The OSG 4551211 is a corner chamfer end mill designed for precision chamfering and edge-breaking operations in ferrous and hardened materials. Built from cobalt high-speed steel and coated with TiAlN, it handles elevated cutting temperatures and maintains edge integrity at higher speeds than uncoated tools. The 0.75 inch cutting diameter and 0.75 inch length of cut are suited to moderate-depth chamfer passes in a single setup. The three-flute geometry balances chip evacuation with rigidity, and the center-cutting design allows plunge entry when required. HVAC fabricators, tool-and-die shops, and general machining operations rely on this profile for consistent chamfer quality on structural and precision components.

The OSG 4551211 fits standard milling applications requiring a right-hand cut, right-hand helix, and fine-pitch geometry. It is appropriate for CNC vertical mills, knee mills, and machining centers accepting a 0.75 inch straight shank. The 30-degree helix angle promotes smooth chip flow on steel, stainless, and cast iron workpieces. At 2.875 inches overall length, it fits most standard tool holders without extended-reach adapters.

Key Features

• TiAlN coating improves heat resistance and extends tool life in dry or minimal-lubrication cutting
• Cobalt substrate provides toughness in interrupted cuts and harder workpiece materials
• Center-cutting geometry permits direct plunge entry without pre-drilling
• Three-flute design balances chip clearance and cutting stability
• Right-hand cut and right-hand helix for use in standard CNC and manual mill spindles
• Fine pitch for smooth surface finish on chamfer edges

Compatibility

Designed as an OEM-style replacement or direct substitute for 0.75 inch corner chamfer end mill applications in standard milling operations requiring a 0.75 inch straight shank and three-flute cobalt geometry.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Secure the shank fully in a collet or end mill holder to the manufacturer-specified grip depth before engaging the spindle. Inspect the TiAlN coating and cutting edges for chips or wear before each use. Follow applicable shop safety procedures and machine guarding requirements when changing or running end mills.