Value Collection 723-6558 Corner Rounding End Mill Cobalt

Product Description

The VALUE COLLECTION 723-6558 is a single-end corner rounding end mill designed to machine consistent radius profiles on workpiece edges. Built from M42 cobalt high-speed steel, it handles harder materials and elevated cutting temperatures better than standard M2 HSS tooling. The mill measures 1-15/16 inches in diameter with a 5/8-inch corner radius and seats into a 1-inch shank holder. Four right-hand flutes with a bright, uncoated finish make it straightforward to inspect for wear. This tool is used by machinists and tool-and-die professionals on manual mills and CNC machining centers where edge-rounding or profile work is required.

Corner rounding end mills like the 723-6558 are used in general metalworking shops, aerospace component work, mold and die applications, and production environments where consistent edge radii are required on steel, stainless, cast iron, and similar ferrous materials. The M42 cobalt grade provides added heat and wear resistance suited to interrupted cuts and harder workpiece materials. Single-end configuration is standard for most production and toolroom setups.

Key Features

• M42 cobalt construction for improved heat resistance over standard HSS
• 5/8-inch corner radius for consistent edge profiling
• 1-15/16 inch mill diameter for broad contact width
• 4 right-hand flutes with right-hand cutting direction
• 1-inch shank diameter fits standard milling collets and holders
• Bright, uncoated finish for easy wear inspection

Compatibility

Designed as an OEM-style replacement or toolroom addition compatible with standard 1-inch bore milling holders and collet chucks used on vertical and horizontal milling machines.

Installation Notes

Installation and tool changes must be performed with the machine spindle fully stopped and locked out per OSHA lockout/tagout procedures. Seat the 1-inch shank fully into the holder and torque the collet or set screw to the holder manufacturer's specification. Verify runout with a dial indicator before beginning the cut. Corner rounding end mills should be run at feeds and speeds appropriate for the workpiece material and mill diameter — consult a machining handbook or the holder manufacturer's guidelines.