Helical Solutions 87644 Corner Rounding End Mill 0.25in Radius

Product Description

The HELICAL SOLUTIONS 87644 is a solid carbide corner rounding end mill designed to produce consistent, smooth radius profiles on metal workpieces. With a 0.25-inch corner radius and a 0.75-inch mill diameter, this tool removes sharp edges and blends radii in a single pass. The 3-flute helical design promotes efficient chip evacuation and smooth cutting action across a range of materials. The Zplus coating improves wear resistance and extends tool life in demanding machining environments. This end mill is suited for use on CNC machining centers by skilled machinists and tool and die professionals.

This corner rounding end mill is used in precision milling applications where a controlled edge radius is required on ferrous and non-ferrous workpieces. Typical applications include die and mold work, aerospace component finishing, and general production machining where sharp corners must be broken to a specific radius. The single-end configuration and cylindrical shank allow straightforward installation in standard collet or end mill holders. The 3-inch overall length provides adequate reach for most conventional setups without sacrificing rigidity.

Key Features

• 0.25-inch corner radius for consistent, repeatable edge profiling
• Solid carbide construction for rigidity and wear resistance in hard materials
• 3-flute helical geometry promotes smooth chip flow and surface finish
• Zplus coating extends tool life and reduces friction during cutting
• Cylindrical shank fits standard collet and end mill holders
• Right-hand flute direction for conventional CNC milling spindles

Compatibility

Designed as a direct-fit replacement for corner rounding end mill applications requiring a 0.75-inch diameter, 0.75-inch shank, and 0.25-inch radius in standard collet or end mill toolholding systems.

Installation Notes

Installation should be performed by a qualified machinist familiar with CNC toolholding systems. Power down and lock out the spindle before inserting or removing the tool from the holder. Ensure the collet or toolholder bore is clean and free of debris before seating the shank. Verify runout with a dial indicator after installation to confirm proper seating and minimize premature tool wear.