Accupro 2500477 Roughing Finishing End Mill 3/8 in Carbide

Product Description

The ACCUPRO 2500477 is a solid carbide roughing finishing end mill designed for aggressive material removal followed by near-finish-quality results in a single tool. With a 3/8-inch cutting diameter, three flutes, and a chipbreaker geometry, it breaks chips efficiently to reduce heat buildup and cutting forces in ferrous and non-ferrous applications. The ZrN (zirconium nitride) coating adds hardness and oxidation resistance at the cutting edge. A 37-degree helix angle promotes smooth chip evacuation and reduces vibration. This tool is specified and installed by machinists, tool-and-die professionals, and CNC operators working in production and job-shop environments.

This end mill is suited for milling slots, pockets, and contoured profiles where roughing and semi-finishing passes are required in the same operation. The chipbreaker along the flute length reduces cutting forces in deep cuts, making it well-suited for harder steels, stainless, and tool steels. The single-end, right-hand cutting, right-hand flute configuration is compatible with standard vertical machining centers and CNC mills using 3/8-inch collets or end mill holders. The straight shank with a 3/8-inch shank diameter fits common ER collet systems without modification.

Key Features

• Chipbreaker flute geometry reduces cutting forces and controls chip length in deep passes
• ZrN coating improves surface hardness and thermal resistance at the cutting edge
• 37-degree helix angle promotes efficient chip evacuation and reduces chatter
• Micrograin solid carbide construction for rigidity and edge retention
• Center-cutting design allows direct plunge entry without a pilot hole
• 1.5-inch length of cut with 4-inch overall length for reach in moderate-depth features

Compatibility

Designed as a standard 3/8-inch shank end mill for use in ER collet chucks, end mill holders, and milling machine spindles accepting 3/8-inch straight shank tooling.

Installation Notes

Installation and tool changes must be performed with the machine spindle fully stopped and the control in a safe state. Use a properly sized ER collet or end mill holder and torque the retention nut to the collet manufacturer specification. Inspect the shank and collet bore for chips or damage before seating the tool. Confirm runout with a dial indicator before beginning a production cut to protect both the tool and the workpiece.