Accupro 12180620 Corner Radius End Mill 3/4 in 4 Flute

Product Description

The ACCUPRO 12180620 is a solid carbide corner radius end mill designed for precision milling operations requiring a controlled edge radius and tight tolerances. Built from micrograin solid carbide and coated with AlTiN (aluminum titanium nitride), this tool handles high-heat applications and abrasive materials with extended tool life. The 4-flute, single-end configuration with a 0.75 inch diameter, 1.625 inch length of cut, and 0.03 inch corner radius makes it well-suited for profiling, slotting, and pocketing where a radiused corner is specified. Right-hand cutting and right-hand flute direction are standard. Centercutting geometry allows direct plunge entry.

This end mill is used in CNC machining centers and manual mills across job shops, tool rooms, and production environments. Typical applications include mold and die work, aerospace components, and general precision part machining where corner breakdown must be minimized and surface finish requirements are tight. The AlTiN coating supports dry or minimal-coolant cutting in hardened steels, stainless, and cast iron. The 4-inch overall length and 0.75 inch shank diameter fit standard ER and side-lock toolholders common in most shops.

Key Features

• Micrograin solid carbide substrate for rigidity and wear resistance
• AlTiN coating for extended tool life in high-temperature, abrasive cuts
• 0.03 inch corner radius with a tolerance of plus or minus 0.0015 inches
• 4 flutes, right-hand cut, right-hand spiral for efficient chip evacuation
• Centercutting design allows plunge milling without a pre-drilled hole
• Variable index flute spacing to reduce chatter and harmonic vibration

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC machining centers and manual mills accepting a 0.75 inch shank diameter in ER collet chucks, Weldon side-lock holders, or equivalent toolholding systems.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully powered down and locked out before changing tooling. Seat the shank fully into the toolholder to the recommended gauge-line depth and torque the collet nut or set screw according to the toolholder manufacturer specifications. Verify runout with a test indicator before commencing the cut, as excessive runout accelerates edge wear and compromises corner radius accuracy.