Hertel 84511500 Roughing End Mill 3/4 in 4 Flute Cobalt

Product Description

The HERTEL 84511500 is a single-end roughing end mill engineered for high-material-removal applications in metal cutting operations. Built from M42 cobalt high-speed steel, it carries a TiAlN coating that extends tool life under elevated cutting temperatures. The 3/4-inch diameter cutter features 4 flutes with a coarse pitch geometry designed to break chips aggressively and reduce cutting forces during roughing passes. The shank and cut diameter are both 3/4 inch, making it a straight-shank tool suitable for standard end mill holders and collet chucks. Machinists and tool-and-die professionals use this tool for slotting, profiling, and peripheral roughing on ferrous and alloy materials.

This end mill is suited for roughing operations in job shops, production machining cells, and maintenance facilities where aggressive stock removal is the priority before finish passes. The coarse-pitch flute design reduces chatter and heat buildup compared to standard-pitch geometry, making it effective on tougher alloys where tool wear is a concern. Right-hand cutting and right-hand flute direction are standard for conventional CNC and manual vertical mill setups.

Key Features

• M42 cobalt HSS construction for improved heat and wear resistance over standard M2 HSS
• TiAlN coating extends cutting life in high-temperature cutting environments
• Coarse pitch, 4-flute roughing geometry for aggressive chip evacuation
• Center-cutting capable — allows plunge entry without a pre-drilled hole
• Single-end design with 3/4-inch length of cut and matching 3/4-inch shank diameter
• Right-hand cut and right-hand flute direction for standard spindle rotation

Compatibility

Designed for use in standard 3/4-inch end mill holders, collet chucks, and milling arbors compatible with 3/4-inch straight-shank tooling on vertical and horizontal milling machines.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's guidelines for tool holding and runout tolerances. Ensure the spindle is fully stopped and the machine is locked out before changing or seating tooling. Secure the shank to the full recommended grip depth in the holder to minimize runout and prevent pull-out under load. Verify coolant delivery and feed-rate settings before engaging the cut.