Accupro 310176 Corner Radius End Mill 5/16 in 4-flute Carbide

Product Description

The ACCUPRO 310176 is a solid carbide corner radius end mill designed for precision milling operations in demanding machining environments. With a 5/16 inch (0.3125 inch) mill diameter and a 0.0200 inch corner radius, this tool produces accurate, radiused corners that reduce stress concentrations and extend workpiece life. The four-flute, right-hand spiral configuration combined with an AlCrTiN coating delivers strong heat resistance and wear performance at elevated cutting speeds. A 38-degree variable index helix helps reduce chatter and improves chip evacuation. Machinists and toolroom operators in production shops install this tool for finishing and semi-finishing passes on ferrous and hardened materials.

This end mill suits single-end milling applications in CNC machining centers and manual knee mills where accurate corner radii and clean sidewall finishes are required. The centercutting geometry allows plunge entry, adding versatility for slotting, profiling, and ramping operations. It is particularly well-suited for die and mold work, aerospace components, and general precision machining where tight tolerances must be maintained over extended run times. The micrograin solid carbide substrate supports rigidity in applications with minimal tool overhang.

Key Features

• AlCrTiN coating provides high-temperature hardness and oxidation resistance for extended tool life
• Micrograin solid carbide substrate delivers rigidity and edge retention
• 0.0200 inch corner radius reduces stress risers on finished workpiece edges
• Variable index flute spacing reduces harmonic chatter during cutting
• Centercutting design supports plunge milling, ramping, and slotting operations
• Right-hand cut, right-hand spiral geometry suits standard CNC spindle rotation

Compatibility

Designed as an OEM-style replacement and standard-production corner radius end mill for CNC machining centers and manual mills accepting a 5/16 inch straight shank toolholder.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Secure the shank fully into a collet or end mill holder to the recommended grip depth before tightening to avoid runout. Inspect the collet bore and toolholder taper for chips or wear before seating the tool. Follow machine manufacturer guidelines and applicable shop safety procedures when setting tool offsets and initiating first cuts.