Accupro 12178718 Corner Radius End Mill 1/2 in 7 Flute

Product Description

The ACCUPRO 12178718 is a solid carbide corner radius end mill designed for high-performance milling in ferrous and hardened materials. It features a 1/2 inch diameter, a 0.03 inch corner radius, and seven flutes with a 37-degree helix angle for aggressive chip evacuation and smooth surface finishes. The AlTiN coating provides heat resistance and extended tool life in high-speed dry cutting applications. Variable index flute spacing reduces harmonic vibration during deep cuts. This tool is intended for use by machinists and tool-and-die professionals on CNC machining centers and manual mills.

This end mill suits applications requiring a precise corner radius blend on pockets, slots, and contoured profiles. The 1-1/4 inch length of cut accommodates moderate-depth side milling and full-slot operations. The single-end, centercutting design allows direct plunge entry into the workpiece. It is well suited for mold and die work, aerospace component machining, and general precision metalworking where corner strength and surface finish are critical. The right-hand cutting and right-hand spiral geometry match standard CNC spindle rotation.

Key Features

• 7-flute geometry increases feed rates and improves surface finish compared to standard 4-flute tools
• AlTiN coating delivers high heat resistance for dry and near-dry high-speed machining
• 0.03 inch corner radius with a tolerance of plus or minus 0.0015 inches for consistent blending
• Variable index flute spacing reduces chatter and vibration in deep-cavity cuts
• Centercutting design permits direct plunge milling without a pre-drilled pilot hole
• Micrograin solid carbide substrate provides rigidity and wear resistance in hardened steels

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC machining centers and manual mills accepting a 1/2 inch straight shank. No specific OEM machine compatibility was stated in the product data.

Installation Notes

Installation is performed by qualified machinists or CNC setup personnel. Secure the 1/2 inch shank in a clean, properly sized collet or end mill holder and torque to the holder manufacturer specification. Verify spindle direction matches the right-hand cutting geometry before initiating a cut. Inspect the corner radius and cutting edges for chips or wear at regular intervals, particularly when machining hardened alloys at elevated feeds and speeds.