Accupro 12183377 Corner Radius End Mill 3/4in 4 Flute Ticn

Product Description

The ACCUPRO 12183377 is a solid carbide corner radius end mill designed for precision milling in ferrous and hardened materials. It features a 3/4 inch cutting diameter with a 0.03 inch corner radius, four flutes, and a 40-degree helix angle optimized for chip evacuation and surface finish. The TiCN (titanium carbonitride) coating adds hardness and abrasion resistance, extending tool life in demanding cuts. With a 3-inch length of cut and 6-inch overall length, this is an extra-long configuration suited for deep-pocket and deep-shoulder milling operations. Machinists and tooling specialists in job shops and precision manufacturing environments install this tool.

This end mill is used in CNC milling operations on steel, stainless steel, cast iron, and other hard metals where extended reach or deep-pocket access is required. The centercutting geometry allows both plunge and peripheral milling. Right-hand flute direction and right-hand cutting rotation are standard for conventional CNC spindle setups. The micrograin carbide substrate provides rigidity and edge retention over long runs. It is typically used in vertical and horizontal machining centers requiring a 3/4 inch shank toolholder.

Key Features

• 0.03 inch corner radius reduces stress concentration and improves part finish at inside corners
• TiCN coating provides superior abrasion resistance compared to uncoated or TiN-coated tools
• 40-degree helix angle promotes efficient chip evacuation in deep cuts
• Micrograin solid carbide substrate for rigidity and edge retention
• Centercutting design supports plunge milling and ramping operations
• Extra-long configuration with 3 inches of cut length for deep-pocket reach

Compatibility

Designed for use in CNC machining centers with a 3/4 inch collet, end mill holder, or shrink-fit toolholder accepting a 3/4 inch shank diameter. Suited for right-hand spindle rotation setups standard in vertical and horizontal CNC milling machines.

Installation Notes

Installation and tool changes should be performed by a qualified machinist or CNC tooling technician with the spindle powered off and locked. Secure the 3/4 inch shank in a properly sized collet or end mill holder torqued to the toolholder specification. Verify runout with a dial indicator before beginning a cut, as excessive runout will accelerate edge wear and degrade corner radius geometry. Follow the machine tool builder guidelines for maximum spindle speeds and feed rates when using extra-long end mills.