Hertel 44839413 Roughing End Mill 1/2 in 4 Flute Cobalt

Product Description

The HERTEL 44839413 is a single-end cobalt roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel with a bright, uncoated finish, it delivers the heat resistance and edge toughness required for tough ferrous and non-ferrous stock. The 1/2-inch diameter tool features four flutes with a coarse pitch and right-hand cutting and flute direction, making it suited for high chip-load roughing passes. It is installed and used by machinists and tool-and-die professionals operating manual or CNC milling machines in job shop and production environments.

This end mill is intended for roughing cuts where rapid stock removal takes priority over surface finish. The coarse-pitch flute geometry helps evacuate chips efficiently and reduces chatter during heavy cuts. With a 1-inch length of cut and 3-inch overall length, it fits standard tool holders accepting a 1/2-inch shank. It is a practical choice for general metalworking, mold and die roughing, and prototype machining in both job shop and light production settings.

Key Features

• M42 cobalt HSS construction provides elevated red hardness and wear resistance compared to standard M2 tooling
• Coarse pitch, 4-flute design optimized for maximum chip evacuation during roughing passes
• Right-hand cut and right-hand helix for compatibility with standard milling machine spindles
• Bright, uncoated finish suitable for use with cutting fluids on a wide range of workpiece materials
• Non-centercutting single end — intended for peripheral and slot roughing, not plunge cutting
• 1/2-inch shank diameter matches the mill diameter for straightforward tool holder setup

Compatibility

Designed as an OEM-style replacement or standard tooling option for milling machines and machining centers accepting a 1/2-inch straight shank end mill holder or collet chuck.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Power down and lock out the spindle before mounting or removing the tool from the holder. Secure the shank to the full depth recommended by the tool holder manufacturer and verify runout before cutting. This end mill is not designed for plunge entry — use a ramp or helical entry toolpath when beginning a cut.