Accupro 12182883 Corner Radius End Mill 3/8 Inches 4 Flute

Product Description

The ACCUPRO 12182883 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and non-ferrous materials. The tool measures 3/8 inches in diameter with a 0.0150-inch corner radius and a 5/8-inch length of cut. A titanium carbonitride (TiCN) coating improves wear resistance and surface hardness, extending tool life in demanding cutting conditions. The micrograin carbide substrate provides rigidity and edge retention at higher feed rates. This single-end, centercutting design allows plunge entry and is appropriate for CNC machining centers and manual milling machines alike. Machinists and tool-and-die professionals select this end mill for finish contouring, profiling, and slotting where a controlled corner radius is required to reduce stress concentrations in the workpiece.

The 12182883 fits standard milling applications in job shops, production machining environments, and tool rooms. Its stub-length configuration with a 2-inch overall length and 3/8-inch shank diameter suits ER collet chucks, end mill holders, and Weldon-style holders commonly used in vertical and horizontal machining centers. The right-hand spiral flute geometry and right-hand cutting direction are consistent with conventional CNC milling setups. A 40-degree helix angle promotes efficient chip evacuation and reduces cutting forces, making it well suited for medium to high-speed finishing passes in steel, stainless, and hardened materials where TiCN coating provides a thermal and abrasion advantage.

Key Features

• TiCN coating increases surface hardness and wear resistance for extended tool life in ferrous materials
• Micrograin solid carbide construction provides rigidity and sharp, consistent edge retention
• 0.0150-inch corner radius reduces stress risers at part corners and improves surface finish quality
• 40-degree helix angle promotes chip evacuation and lowers cutting forces during finishing passes
• Centercutting geometry allows direct plunge entry without pre-drilling
• Stub-length body minimizes deflection for tighter dimensional control in precision work

Compatibility

Designed as a direct-fit replacement or standard addition for 3/8-inch shank tooling setups in ER collet systems and end mill holders used on CNC machining centers and manual knee mills requiring a 4-flute corner radius end mill in a stub-length configuration.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for toolholder torque and runout specifications. Ensure the spindle is fully stopped and the machine is in an e-stop or locked-out state before loading or removing the end mill. Verify shank seating depth against the holder specification and confirm runout with a dial indicator before commencing cuts. Follow the cutting tool manufacturer recommended speeds and feeds for the workpiece material and coating type.