Accupro 2500478 Roughing Finishing End Mill 1/2 in 3 Flute

Product Description

The ACCUPRO 2500478 is a solid carbide roughing and finishing end mill designed for aggressive material removal with a smooth finish in a single tool. It features a 1/2 inch cutting diameter, three flutes, and a chipbreaker geometry that breaks up chips during cut to reduce heat buildup and prevent re-cutting. The ZrN (zirconium nitride) coating improves surface hardness and lubricity, extending tool life in ferrous and non-ferrous applications. A 37-degree helix angle promotes efficient chip evacuation and reduces cutting forces. This end mill is intended for use by machinists and tooling professionals in CNC milling operations.

This end mill suits production and job-shop milling where a single tool needs to handle both roughing and semi-finishing passes. The square end profile makes it appropriate for slotting, peripheral milling, and step milling in materials where chipbreaker geometry provides a performance advantage. The right-hand flute direction and right-hand cutting orientation are standard for conventional CNC vertical and horizontal machining centers. Single-end construction is typical for precision toolholders requiring a straight shank with close diameter tolerances.

Key Features

• Chipbreaker geometry reduces chip load and heat during roughing passes
• ZrN coating increases surface hardness and extends tool life in demanding cuts
• 37-degree helix angle promotes efficient chip evacuation
• Micrograin solid carbide substrate provides rigidity and wear resistance
• Center-cutting capable for plunge entry applications
• Straight shank with tight diameter tolerance for precise toolholder fitment

Compatibility

Designed as an OEM-style replacement or direct-fit option for standard 1/2 inch straight-shank toolholders including ER collet chucks, end mill holders, and shrink-fit holders used in CNC milling centers.

Installation Notes

Installation should be performed by a qualified machinist following the toolholder manufacturer torque and runout specifications. Ensure the shank is fully seated to the recommended engagement depth in the toolholder before securing. Verify spindle and toolholder are clean and free of chips or debris prior to tool insertion. Always confirm spindle direction and feed rate parameters in the CNC program before initiating a cut.