Accupro 12183189 Corner Radius End Mill 1/8 in 4 Flute Carbide

Product Description

The ACCUPRO 12183189 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining applications. Built from micrograin carbide, it delivers a 0.125 inch mill diameter with a 0.02 inch corner radius, a 1 inch length of cut, and a 3 inch overall length. The 4-flute, right-hand spiral design with a 40-degree helix angle promotes efficient chip evacuation and smooth surface finishes. The bright/uncoated finish is suited to non-ferrous metals and applications where coating is not required. Machinists and CNC programmers select this geometry when tight corner radius tolerances are critical to part finish and dimensional accuracy.

This end mill fits light to medium milling work on machining centers and CNC mills in job shop, tool and die, and production environments. The single-end, centercutting configuration allows plunge entry and full-slot or peripheral milling passes. Its extra-long length type makes it appropriate for deeper reach applications where a standard-length tool would not clear the workpiece. The 1/8 inch shank matches standard collets and toolholders designed for that diameter.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• 0.02 inch corner radius with a tolerance of plus or minus 0.0015 inches for consistent edge geometry
• 40-degree helix angle promotes chip flow and reduces cutting forces
• Centercutting design enables plunge milling without a pre-drilled entry point
• Right-hand flute direction and right-hand cutting for standard spindle rotation
• Bright/uncoated finish suitable for aluminum, brass, and other non-ferrous materials

Compatibility

Designed as a direct-fit replacement or standard selection for CNC machining centers and manual mills accepting a 1/8 inch shank collet or toolholder.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the spindle before inserting or removing the tool from the collet or toolholder. Verify collet condition and seat the shank fully to the specified engagement depth before tightening. Do not exceed the manufacturer-recommended feeds and speeds for the workpiece material, as solid carbide tooling is brittle and susceptible to fracture under excessive lateral load or improper runout.