Accupro 12181418 Corner Radius End Mill 3/8 in 2 Flute

Product Description

The ACCUPRO 12181418 is a solid carbide corner radius end mill designed for precision milling operations requiring a controlled edge radius and high wear resistance. The cutting diameter measures 3/8 inches with a 0.0300-inch corner radius and a 7/8-inch length of cut. The 2-flute, right-hand spiral geometry promotes efficient chip evacuation in a range of materials. A TiCN coating adds surface hardness and lubricity, extending tool life compared to uncoated carbide. The micrograin carbide substrate supports tight tolerances and consistent performance across repeated cuts. This tool is used by machinists and CNC operators in job shop and production environments.

This end mill suits applications where a small, precise corner radius is required to reduce stress concentrations in milled pockets, slots, and contoured profiles. The centercutting design allows direct plunge entry into workpieces. The single-end configuration and 3/8-inch shank diameter fit standard milling chucks and collets used in vertical machining centers and manual knee mills. Right-hand cutting direction is standard for conventional milling setups. The 40-degree helix angle promotes smooth cutting action and is well-suited for harder alloy steels and stainless materials where TiCN coatings perform effectively.

Key Features

• 0.0300-inch corner radius for controlled edge geometry and reduced workpiece stress risers
• TiCN coating provides elevated hardness and reduced friction for extended tool life
• Micrograin solid carbide substrate supports tight diameter tolerance of +0.000000 / -0.002500 inches
• 40-degree helix angle promotes smooth chip flow and reduced cutting forces
• Centercutting design allows direct plunge milling without a pre-drilled entry hole
• Right-hand flute direction and right-hand cutting for standard CNC and manual mill setups

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide end mill for standard 3/8-inch collets and milling chucks in vertical machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the tool holder is properly cleaned and free of debris before seating the shank. Secure the 3/8-inch shank in a matched collet or end mill holder to the tool holder manufacturer's specified clamping method. Verify runout with a dial indicator before beginning a production cut to confirm the tool seats within acceptable concentricity limits.