Accupro 12182978 Corner Radius End Mill 1 in 4 Flute Ticn

Product Description

The ACCUPRO 12182978 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and non-ferrous materials. Built from micrograin solid carbide and coated with TiCN (Titanium Carbonitride), it delivers extended tool life and improved wear resistance in demanding cutting environments. The 1-inch milling diameter paired with a 1/8-inch (0.1250 inch) corner radius reduces stress concentration at the cutting edge, minimizing chipping on corners and extending part surface finish quality. With 4 flutes and a 40-degree helix angle, it provides efficient chip evacuation and smooth cutting action. This tool is installed and operated by machinists and CNC operators in job shop, production, and toolroom settings.

This end mill is suited for milling slots, pockets, profiles, and contoured surfaces where a radiused corner is required rather than a sharp 90-degree edge. The long-length configuration, with a 2-1/4-inch length of cut and 5-inch overall length, allows reach into deeper features or workpiece cavities. It is centercutting, enabling plunge entry directly into the workpiece without a pre-drilled hole. Right-hand flute direction and right-hand cutting make it compatible with standard CNC machining center and manual mill spindle rotation.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance in high-speed applications
• TiCN coating improves surface hardness and reduces friction at the cutting edge
• 1/8-inch corner radius (0.1250 inch) reduces edge chipping and improves corner durability on finished parts
• 4-flute, 40-degree helix spiral design promotes efficient chip evacuation and fine surface finish
• Centercutting geometry allows direct plunge milling without a pilot hole
• Long-length reach with 2-1/4 inches LOC and 5 inches OAL for deep-feature milling

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC machining centers and manual mills accepting a 1-inch straight shank end mill holder or collet chuck.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before inserting or removing the tool from the holder. Use a properly sized end mill holder or precision collet rated for a 1-inch shank diameter and verify runout with a dial indicator before production cuts. Consult the machine tool manufacturer guidelines and applicable shop safety standards when determining feeds, speeds, and depth of cut for the workpiece material.