Accupro 12183056 Corner Radius End Mill 3/8 in 4 Flute

Product Description

The ACCUPRO 12183056 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. It features a 3/8 inch diameter, a 1-1/8 inch length of cut, and a 0.09 inch corner radius that reduces stress concentrations at the base of milled features. With 4 flutes and a right-hand spiral flute direction, this tool delivers efficient chip evacuation and a smooth surface finish. The bright uncoated finish suits general-purpose cutting in a range of ferrous and non-ferrous materials. Manufactured from micrograin solid carbide, it holds tight tolerances across repeated production runs and is suited for CNC machining centers and manual mills alike.

This end mill is intended for long-reach profiling, slotting, and corner-radius feature work in production and job-shop machining. Its single-end, centercutting design allows plunge entry as well as peripheral cutting. The 3/8 inch shank diameter fits standard ER and side-lock toolholders common in vertical machining centers. The 40-degree helix angle supports aggressive feed rates while maintaining surface quality, making it appropriate for steel, aluminum, and similar machinable alloys in both roughing and finishing passes.

Key Features

• 0.09 inch corner radius reduces tool-pressure stress at feature roots and extends tool life in corner-radius profiling
• Micrograin solid carbide construction provides hardness and wear resistance across production volumes
• 4-flute, right-hand spiral geometry with 40-degree helix for efficient chip removal and smooth finishes
• Centercutting capability allows direct plunge entry without a pre-drilled pilot hole
• Bright uncoated finish suitable for general-purpose cutting in ferrous and non-ferrous materials
• Long flute type with 3 inch overall length supports extended-reach applications

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide corner radius end mill for standard 3/8 inch shank toolholding systems on CNC and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist following the toolholder manufacturer's clamping torque and runout specifications. Ensure the machine spindle is fully stopped and the toolholder is clean and free of debris before seating the shank. Verify runout at the tool tip with a dial indicator before beginning a production run. Observe all applicable shop safety practices, including proper RPM and feed rate selection for the workpiece material.