Accupro 95139058 Corner Radius End Mill 5/8 in 4 Flute

Product Description

The ACCUPRO 95139058 is a solid carbide corner radius end mill designed for precision milling operations in metal cutting applications. It features a 5/8-inch diameter with a 0.0150-inch corner radius and a 4-flute geometry with variable index and variable helix angles, which help reduce chatter and improve surface finish. The AlCrTiN PVD coating provides thermal resistance and wear protection at elevated cutting temperatures. With a 1-1/4-inch length of cut and a 3-1/2-inch overall length, this end mill suits rigid setups on CNC machining centers. It is intended for installation and use by machinists and tool-and-die professionals working in job shop, production, and toolroom environments.

This end mill is well suited for finishing and semi-finishing passes on ferrous metals and hardened steels where corner protection is required to maintain part geometry. The centercutting design allows for plunge entry without a pre-drilled pilot hole. The VS Series designation indicates a variable helix and variable index configuration, which is commonly applied in high-speed milling of difficult-to-machine alloys. A straight cylindrical shank with h6 tolerance ensures consistent runout in standard ER collet chucks and end mill holders.

Key Features

• 0.0150-inch corner radius protects part edges and extends tool life on finish passes
• AlCrTiN PVD coating for high-heat resistance and abrasion protection
• Variable index and variable helix geometry reduces vibration and chatter
• Centercutting design allows direct plunge milling without pilot hole
• Micrograin solid carbide substrate for rigidity and dimensional stability
• Right-hand cut, right-hand spiral flute direction for standard CNC spindle compatibility

Compatibility

Designed as an OEM-style solid carbide corner radius end mill suitable for use in standard 5/8-inch straight-shank end mill holders and ER collet chucks on CNC milling machines and machining centers.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool holding and runout verification. Ensure the spindle and tool holder are clean and free of chips before seating the shank. Verify TIR at the cutting edge with a dial indicator before running production cuts. Follow the machine tool and facility lockout/tagout procedures before changing tooling.