Accupro 12181957 Corner Radius End Mill 1/4 in 3 Flute Ticn

Product Description

The ACCUPRO 12181957 is a solid carbide corner radius end mill designed for precision milling applications in metal fabrication and machining environments. It features a 1/4-inch mill diameter, a 3/4-inch length of cut, and a 0.015-inch corner radius that produces consistent, controlled fillets while reducing stress concentrations at part corners. The TiCN coating improves surface hardness and wear resistance, extending tool life in ferrous and non-ferrous materials. With three right-hand spiral flutes and a 40-degree helix angle, the tool delivers efficient chip evacuation and smooth cutting action. This end mill is installed and operated by machinists and CNC tooling technicians.

This end mill is suited for milling operations on machining centers and CNC mills where a controlled corner radius is required. It is used in precision part production, die and mold work, and general metalworking applications. The single-end, centercutting design allows plunge entry as well as peripheral and slot milling. Its 2-1/2-inch overall length and 1/4-inch shank diameter make it compatible with standard ER collet chucks and end mill holders commonly found in light-duty to mid-size machining setups.

Key Features

• 0.015-inch corner radius for consistent fillet generation and reduced stress concentrations
• TiCN coating increases surface hardness and wear resistance across a wide range of workpiece materials
• Three right-hand spiral flutes with 40-degree helix angle for efficient chip evacuation
• Centercutting design permits plunge milling as well as peripheral and slot operations
• Micrograin solid carbide construction provides rigidity and dimensional stability under cutting loads
• Single-end configuration with 1/4-inch shank for use in standard collet and end mill holder systems

Compatibility

Designed as an OEM-style solid carbide end mill for use in standard 1/4-inch collet chucks, shrink-fit holders, and end mill holders on CNC machining centers and manual knee mills.

Installation Notes

Installation and tool changes should be performed by qualified machinists with the machine fully powered down and the spindle locked. Ensure the shank is clean and seated to the correct gauge-line depth in the holder before tightening. Verify runout with a dial indicator after mounting, as excessive runout will accelerate wear and reduce corner radius accuracy. Follow the machine manufacturer and tooling manufacturer feed-and-speed guidelines for the specific workpiece material.