Accupro 12181408 Corner Radius End Mill 3/8 in 2 Flute Carbide

Product Description

The ACCUPRO 12181408 is a single-end corner radius end mill designed for precision milling operations in ferrous and non-ferrous materials. Built from micrograin solid carbide, it delivers rigidity and wear resistance in demanding cutting environments. The tool features a 3/8 inch diameter with a 0.0200 inch corner radius, a 7/8 inch length of cut, and a 2-1/2 inch overall length. The 40-degree helix angle promotes efficient chip evacuation and smooth cutting action. This end mill is center-cutting, allowing plunge entry, and runs in a right-hand flute direction with right-hand cutting geometry. It ships bright and uncoated.

This end mill is suited for CNC machining centers and manual milling machines in job shop, toolroom, and production environments. It handles contouring, slotting, and profiling operations where a controlled corner radius is required to reduce stress concentrations in the finished workpiece. The 3/8 inch shank diameter fits standard ER collet chucks, end mill holders, and hydraulic toolholding systems commonly used in both vertical and horizontal machining setups.

Key Features

• Micrograin solid carbide construction for extended tool life and dimensional stability
• 0.0200 inch corner radius with a tolerance of plus or minus 0.00150 inches
• 40-degree helix angle for efficient chip flow and reduced cutting forces
• Center-cutting design allows direct plunge entry without pre-drilling
• Right-hand cut and right-hand spiral flute geometry
• Bright/uncoated finish suitable for a broad range of workpiece materials

Compatibility

Designed as a standard 3/8 inch shank corner radius end mill compatible with ER collet chucks, end mill holders, and other 3/8 inch bore toolholding systems used in CNC and manual milling applications.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Secure the shank fully within the toolholder to the recommended minimum engagement depth before tightening. Verify spindle runout after installation to protect the corner radius tolerance. Never exceed the toolholder manufacturer's rated clamping torque range and always confirm machine spindle direction matches the right-hand cutting geometry of this tool before starting a cut.