Hertel 44838662 Roughing End Mill 1/2 in 4 Flute Cobalt Tin

Product Description

The HERTEL 44838662 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel and finished with a TiN (titanium nitride) coating, this tool handles tough ferrous and non-ferrous materials with consistent performance. It features a 1/2 inch mill diameter, 4 flutes with a fine pitch geometry, and a 1 inch length of cut. Right-hand cutting and right-hand flute direction make it a standard configuration for conventional milling setups. Machinists and tool-and-die professionals use this type of end mill for roughing passes where chip clearance and tool life matter most.

This end mill is suited for use in vertical and horizontal milling machines, CNC machining centers, and manual knee mills. The single-end design and 3 inch overall length make it practical for a wide range of roughing applications in job shops, maintenance machining environments, and production settings. The fine pitch serrated cutting edge breaks chips efficiently, reducing heat buildup and cutting forces during heavy stock removal on steel, stainless, and similar materials.

Key Features

• M42 cobalt HSS construction for elevated heat and wear resistance
• TiN coating reduces friction and extends tool life in ferrous materials
• Fine pitch, 4-flute roughing geometry for efficient chip breaking
• 1/2 inch mill diameter with 1/2 inch shank diameter for standard collet and end mill holder compatibility
• Right-hand cut, right-hand helix — standard configuration for most milling setups
• Non-centercutting design — requires a pre-drilled hole or side-entry approach for plunge applications

Compatibility

Designed as a standard 1/2 inch shank roughing end mill compatible with 1/2 inch collets, end mill holders, and milling chucks on vertical mills, knee mills, and CNC machining centers. Shank diameter tolerance is -0.0001 to -0.0005 inches for consistent tool holder fit.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank fully into the tool holder and torque the set screw or collet nut to the holder manufacturer specification. Confirm runout with a dial indicator before beginning the cut, as excessive runout accelerates edge wear on roughing geometries.