Accupro 2500455 Roughing Finishing End Mill 20mm 3 Flute

Product Description

The ACCUPRO 2500455 is a single-end, square-end roughing finishing end mill designed for aggressive material removal combined with a quality finished surface in one operation. Built from micrograin solid carbide and coated with zirconium nitride (ZrN), it delivers hardness and thermal resistance suited to high-speed milling applications. The 3-flute geometry with a 37-degree helix angle promotes efficient chip evacuation while maintaining surface finish quality. With a 20 mm cutting diameter and 32 mm length of cut, this tool handles moderate-depth slotting and profiling passes. It is intended for use by machining professionals and CNC operators working in job shop or production environments.

This end mill is well suited for milling ferrous and non-ferrous materials where a ZrN coating provides added lubricity and wear resistance. The straight 20 mm shank with a tight diameter tolerance of -0.0001 to -0.0004 inches ensures consistent seating in standard ER or side-lock toolholders. The right-hand flute direction and right-hand cutting orientation are standard for conventional CNC machining centers. The 100 mm overall length accommodates typical reach requirements in vertical and horizontal milling setups without sacrificing rigidity.

Key Features

• Micrograin solid carbide construction for superior hardness and edge retention
• ZrN (zirconium nitride) coating improves wear resistance and reduces friction
• 37-degree helix angle promotes smooth chip flow and reduces cutting forces
• 3-flute square end geometry supports both roughing and finishing in a single tool
• Center-cutting capable, allowing plunge entry into workpiece material
• Tight shank diameter tolerance (-0.0001/-0.0004 inches) for accurate toolholder fit

Compatibility

Designed as a direct-fit replacement for standard 20 mm straight-shank end mill applications in ER collet chucks, Weldon-style holders, and side-lock toolholders compatible with 20 mm shank tooling.

Installation Notes

Installation should be performed by a qualified CNC machinist or tooling technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Clean the toolholder bore and shank contact surfaces before seating to prevent runout. Verify tool projection and reach against the programmed cutting path before initiating a cut cycle.