Accupro 312130 Corner Radius End Mill 3/8 in 5 Flute Carbide

Product Description

The ACCUPRO 312130 is a solid carbide corner radius end mill designed for precision milling operations in demanding machining environments. Built from micrograin solid carbide and coated with AlCrTiN for heat and wear resistance, this end mill features a 3/8 inch diameter, a 1/2 inch length of cut, and a 4 inch overall length. The corner radius measures 0.030 inches, reducing stress concentration at the cutting edge and extending tool life in finishing and semi-finishing applications. With 5 flutes and a 38-degree helix, it delivers smooth chip evacuation and improved surface finish. The extended reach design, with a 1-1/8 inch reach length and reduced neck diameter of 0.356 inches, allows access to deep features without sacrificing rigidity.

This end mill is suited for machining hardened steels, stainless steels, and high-temperature alloys in aerospace, die and mold, and general precision machining applications. The centercutting geometry allows plunge entry, giving machinists flexibility in toolpath strategies. The variable index flute spacing reduces harmonic chatter, making it a practical choice for high-speed and high-feed programs on modern CNC machining centers. Single-end construction keeps the tool profile compact for toolchanger compatibility.

Key Features

• AlCrTiN coating for high heat resistance and extended tool life in ferrous and hardened materials
• Micrograin solid carbide substrate for superior hardness and edge retention
• 0.030 inch corner radius reduces edge chipping and improves workpiece surface finish
• 5-flute, 38-degree helix geometry promotes efficient chip evacuation and reduces cutting forces
• Variable index flute spacing minimizes chatter during high-speed machining
• Extended reach with 1-1/8 inch reach length and reduced 0.356 inch neck diameter for deep-feature access
• Centercutting design enables plunge milling and ramping entry moves

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC machining centers requiring a 3/8 inch shank, single-end corner radius end mill with extended reach geometry.

Installation Notes

This tool should be installed by a qualified machinist following standard CNC toolsetting procedures. Secure the shank in a collet or end mill holder torqued to the machine spindle manufacturer specifications. Verify runout with a dial indicator before cutting. Always confirm spindle speed, feed rate, and depth of cut are appropriate for the workpiece material before engaging the cut.