Accupro 2500156 Roughing End Mill 3/8 in 4 Flute Carbide

Product Description

The ACCUPRO 2500156 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from solid carbide with a micrograin grade substrate, it delivers the hardness and wear resistance needed for high-feed roughing passes. The 3/8-inch diameter cutter features four flutes with a right-hand cutting and right-hand flute direction. A TiCN coating reduces friction and extends tool life in ferrous and non-ferrous applications. The stub-length configuration keeps the tool rigid under heavy chip loads, minimizing deflection. This end mill is a tool used by machinists and CNC operators in production and job-shop environments.

The 2500156 is suited for roughing operations on machining centers and manual mills where rapid stock removal is the priority. The centercutting geometry allows plunge entry, giving the operator flexibility in toolpath strategy. With a 1/2-inch length of cut and a 3/8-inch shank, this is a compact, stub-reach tool intended for shallow-to-moderate depth cuts in steel, stainless, aluminum, and similar workpiece materials. It is a practical choice for shops needing a reliable rougher in a common diameter without switching to a larger shank.

Key Features

• Solid carbide micrograin substrate for hardness and edge retention under roughing loads
• TiCN coating reduces heat buildup and extends tool life in ferrous applications
• Centercutting geometry allows direct plunge entry into the workpiece
• Four-flute right-hand configuration for efficient chip evacuation at higher feed rates
• Stub-length build maximizes rigidity and minimizes deflection during heavy cuts
• 3/8-inch shank with tight diameter tolerance of plus 0.000 to minus 0.005 inches

Compatibility

Designed as an OEM-style solid carbide roughing end mill suitable for use in standard 3/8-inch collets and end mill holders on CNC machining centers and manual knee mills.

Installation Notes

Installation is performed by machinists using an appropriate end mill holder or collet chuck sized for a 3/8-inch shank. Ensure the machine spindle is fully stopped and locked before changing tooling. Verify runout with a dial indicator after seating the tool in the holder to confirm concentricity within acceptable limits. Follow the machine manufacturer and shop safety guidelines for speeds, feeds, and chip clearance when setting up a roughing operation.