Accupro 12177391 Corner Radius End Mill 3/8 in 7 Flute

Product Description

The ACCUPRO 12177391 is a 7-flute, solid carbide corner radius end mill designed for high-performance milling in demanding production environments. It features a 3/8 inch mill diameter, a 0.03 inch corner radius, and a 1/2 inch length of cut. The AlTiN coating provides heat and oxidation resistance, making it well-suited for dry or high-speed machining of hardened steels, stainless alloys, and other difficult-to-machine materials. A micrograin carbide substrate adds wear resistance and edge retention across extended tool life. This is a single-end, centercutting tool with right-hand flute direction and right-hand cutting direction, and it supports extended reach applications with a 3-1/8 inch reach length.

This end mill is appropriate for precision slot milling, profiling, and contouring operations where a controlled corner radius is required to reduce stress concentrations or meet part geometry specs. The 7-flute configuration and variable index geometry help minimize chatter and improve surface finish at higher feed rates. It is typically used in CNC machining centers in tool and die, aerospace, medical device, and general precision manufacturing environments.

Key Features

• 7-flute variable index design reduces chatter and improves surface finish
• AlTiN coating for elevated heat resistance in dry and high-speed machining
• Micrograin solid carbide substrate for enhanced wear resistance and edge retention
• Centercutting geometry allows direct plunge entry
• Extended reach configuration with 3-1/8 inch reach length and 0.355 inch neck diameter
• Corner radius tolerance of plus or minus 0.0015 inches for consistent part geometry

Compatibility

Designed for use in CNC machining centers accepting a 3/8 inch shank diameter. Suited for milling hardened steels, stainless alloys, and similar difficult-to-machine materials where AlTiN coating performance is required.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle and tool holder are fully powered down and locked out before changing tooling. Verify tool holder runout and collet condition before securing the shank to maintain dimensional accuracy. Follow the machine manufacturer and tooling manufacturer feed and speed recommendations for the specific workpiece material and coating type.