Accupro 12177681 Corner Radius End Mill 1/8 in 5 Flute Altin

Product Description

The ACCUPRO 12177681 is a 5-flute solid carbide corner radius end mill designed for high-performance milling in demanding metalworking applications. It features a 1/8 inch cutting diameter, a 1/2 inch length of cut, and a 0.0200 inch corner radius that reduces stress concentration at the cutting edge and extends tool life. The AlTiN coating provides thermal resistance and hardness at elevated cutting temperatures. At 1-1/2 inches overall length with a matching 1/8 inch shank diameter, this is a compact, precision tool suited for CNC machining centers and milling machines run by machinists and toolroom technicians.

This end mill is built for finish and semi-finish milling passes in ferrous and hardened materials including alloy steels, tool steels, and cast iron. The 40-degree helix angle promotes smooth chip evacuation and reduces chatter at higher feed rates. Its centercutting geometry allows plunge entry, giving the operator flexibility in toolpath strategy. The micrograin carbide substrate delivers the edge retention and rigidity required for tight-tolerance work in precision part manufacturing and die-and-mold applications.

Key Features

• 0.0200 inch corner radius reduces cutting-edge chipping and improves workpiece surface finish
• AlTiN coating provides high heat resistance and extended tool life in dry and semi-dry cutting conditions
• 5-flute design increases feed rates and improves surface finish compared to 4-flute equivalents at the same diameter
• 40-degree helix angle promotes efficient chip evacuation and reduces vibration
• Centercutting capability allows direct plunge entry without a pre-drilled hole
• Micrograin solid carbide substrate supports tight tolerances and consistent edge geometry across the tool life
• Right-hand cut and right-hand spiral flute direction for standard CNC milling spindle compatibility

Compatibility

Designed as an OEM-style solid carbide corner radius end mill compatible with standard CNC milling machines and machining centers accepting a 1/8 inch straight shank toolholder or collet.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and machine power locked out per applicable shop safety procedures. Verify collet or toolholder runout before use, as excessive runout at this diameter will accelerate wear and compromise corner radius tolerance. Consult the machine manufacturer and tooling guidelines for appropriate cutting parameters; do not exceed the toolholder's rated speed or clamping torque range.