Hertel 44839058 Roughing End Mill 1/2 in 4 Flute Cobalt Tin

Product Description

The HERTEL 44839058 is a single-end roughing end mill designed for aggressive material removal in milling operations. Manufactured from M42 cobalt high-speed steel and coated with titanium nitride (TiN), it delivers extended tool life in demanding cutting applications. The 1/2-inch diameter, 4-flute configuration with a coarse pitch generates the chip clearance needed for high feed rates. With a 1-inch length of cut and 3-inch overall length, this end mill is suited for general-purpose roughing passes in ferrous and non-ferrous metals. Installation is handled by machinists and tool-and-die professionals in shop environments.

This end mill is used in vertical and horizontal milling machines, CNC machining centers, and manual knee mills for roughing operations on steel, stainless steel, cast iron, and similar materials. The right-hand cutting direction and right-hand flute spiral are standard for conventional and climb milling setups. The center-cutting geometry allows plunge entry, adding flexibility for pocketing and slotting operations in production and maintenance machining contexts.

Key Features

• M42 cobalt construction for improved heat and wear resistance over standard HSS
• TiN coating extends tool life and reduces friction on cutting edges
• Coarse pitch design promotes chip evacuation during heavy roughing cuts
• Center-cutting capable — supports direct plunge entry for pocketing operations
• Right-hand cut, right-hand flute for standard milling setups
• 1/2-inch shank diameter matches standard collet and end mill holder sizes

Compatibility

Designed as an OEM-style replacement or standard tooling option for 1/2-inch end mill holders, ER collet chucks, and side-lock (Weldon) holders used in CNC machining centers and manual milling machines.

Installation Notes

Installation is performed by machinists using appropriate collet chucks or end mill holders rated for 1/2-inch shank tooling. Ensure the spindle is fully de-energized and at rest before changing tooling. Shank diameter tolerance runs from -0.0001 to -0.0005 inches, so verify holder bore condition before seating the tool. Follow machine tool manufacturer torque guidelines for drawbar and set screw retention.