Accupro 125991 Roughing End Mill 3 Flute Solid Carbide

Product Description

The ACCUPRO 125991 is a single-end roughing end mill designed for aggressive material removal in milling applications. Built from submicron solid carbide, it delivers the rigidity and edge retention needed for high-demand cuts in ferrous and non-ferrous materials. The 3-flute, variable-pitch chipbreaker geometry breaks chips into manageable segments, reducing heat buildup and cutting forces on the workpiece. With a 3/8 inch mill diameter, a 0.03 inch corner radius, and a 1.5 inch length of cut, this end mill is suited for profiling, slotting, and roughing passes where cycle time and tool life matter. Machinists and CNC operators working in job shop or production environments are the primary installers.

This roughing end mill is intended for use in vertical and horizontal milling machines, CNC machining centers, and manual mills running right-hand spindle rotation. The straight cylindrical shank with h6 tolerance fits standard collets and end mill holders accepting a 3/8 inch shank. The bright uncoated finish makes it a practical choice for operators who want to inspect tool wear visually without a coating masking the substrate. It is a single-end tool, so full replacement is required once the cutting end is worn.

Key Features

• Submicron solid carbide construction for high rigidity and edge retention
• 3-flute chipbreaker geometry reduces chip recutting and lowers cutting forces
• Variable pitch reduces harmonic vibration during heavy roughing passes
• 0.03 inch corner radius provides edge strength and reduces corner chipping
• Right-hand cut and right-hand spiral flute direction for standard spindle use
• Centercutting capable, allowing plunge entry into the workpiece

Compatibility

Designed as a direct-fit replacement for standard 3/8 inch straight-shank end mill holders and collet systems in CNC and manual milling machines requiring a single-end roughing geometry.

Installation Notes

Installation is performed by machinists or CNC setup technicians. Power down the spindle completely and confirm zero rotation before inserting or removing the tool from the holder. Seat the shank fully into the collet or holder to the recommended gauge line before torquing the retention mechanism. Inspect the shank and collet bore for chips or contamination prior to installation to maintain runout within tolerance.