Hertel 44838753 Roughing End Mill 3/4 in 4 Flute Cobalt

Product Description

The HERTEL 44838753 is a single-end roughing end mill designed for aggressive material removal in milling applications. Manufactured from M42 cobalt high-speed steel with a bright, uncoated finish, it delivers the hardness and heat resistance needed for cutting ferrous and difficult-to-machine alloys. The cutter measures 0.75 inches in diameter with a 1.25-inch length of cut and a 3.5-inch overall length. Its fine-pitch, 4-flute geometry and right-hand cutting and flute direction make it a standard workhorse for roughing passes on vertical and horizontal milling machines. Licensed machinists and tool-and-die professionals are the primary users of this tool.

This roughing end mill is suited for shop floor roughing operations where rapid stock removal is the priority before finishing passes. The fine-pitch configuration reduces chatter and allows higher feed rates in medium to hard steels. It is commonly used in job shops, maintenance machining environments, and production settings where cobalt tooling is specified for elevated cutting temperatures or harder workpiece materials.

Key Features

• M42 cobalt high-speed steel construction for improved heat and wear resistance over standard HSS
• Fine-pitch, 4-flute design optimized for aggressive roughing and high feed rates
• 3/4 inch mill diameter with matching 3/4 inch shank diameter for direct collet or end mill holder mounting
• Right-hand cut and right-hand flute direction for standard spindle operation
• Bright, uncoated finish suitable for general-purpose roughing applications
• Single-end configuration with non-center-cutting geometry — requires plunge entry via a pilot hole or ramp entry

Compatibility

Designed as an OEM-style replacement or direct-fit roughing end mill for standard 3/4 inch collet chucks, end mill holders, and milling machine spindles that accept straight-shank tooling.

Installation Notes

Installation should be performed by a qualified machinist familiar with milling machine toolholding systems. Ensure the spindle is fully de-energized and the machine is locked out before changing tooling. Seat the shank fully into the holder to the minimum engagement depth recommended by the toolholder manufacturer. Because this is a non-center-cutting end mill, do not attempt straight plunge cuts — use a pre-drilled entry point or a ramping toolpath.