Accupro 12180846 Corner Radius End Mill 1/4 in 7 Flute

Product Description

The ACCUPRO 12180846 is a 7-flute, solid carbide corner radius end mill designed for high-performance milling in demanding materials. Built from micrograin carbide and coated with AlTiN (aluminum titanium nitride), it handles elevated cutting temperatures and abrasive workpiece materials effectively. The 0.03-inch corner radius reduces stress concentration at the cutting edge, extending tool life in both roughing and finishing passes. With a 1/4-inch mill diameter, a 3/8-inch length of cut, and a 4-inch overall length, this end mill suits applications where reach and precision matter. It is a single-end, centercutting tool with right-hand flute direction and right-hand cutting direction.

This end mill is used in CNC milling operations across metalworking shops, tool rooms, and production environments. The extended reach design, with a 2-1/2-inch reach length and a reduced neck diameter of 0.236 inches, allows access into pockets, slots, and deep-wall features where a standard-length tool cannot reach. The variable index flute spacing helps dampen vibration and chatter during aggressive cuts. It is suited for milling hardened steels, stainless steels, titanium, and other high-temperature alloys where an AlTiN coating provides thermal resistance and lubricity.

Key Features

• 7-flute, spiral-flute geometry increases feed rate capability and chip evacuation efficiency
• AlTiN coating provides oxidation resistance and hardness at elevated cutting temperatures
• Centercutting design allows plunge milling directly into the workpiece
• Extended reach with 2-1/2-inch reach length and reduced 0.236-inch neck diameter for deep-pocket access
• Variable index flute spacing reduces harmonic vibration and chatter
• Micrograin solid carbide substrate for rigidity, wear resistance, and edge retention

Compatibility

Designed as an OEM-style replacement or direct-use end mill compatible with standard 1/4-inch collet chucks, ER collet systems, and hydraulic or shrink-fit toolholders used in CNC milling machines and machining centers.

Installation Notes

Installation is performed by qualified CNC machinists or toolroom technicians. Secure the 1/4-inch shank in a clean, properly sized collet or toolholder and torque to the toolholder manufacturer's specification. Inspect the shank and collet bore for chips or contamination before clamping. Confirm runout with a dial indicator before beginning production cuts, as excessive runout will accelerate edge wear on a 7-flute tool.