Hertel 72846454 Roughing End Mill 1 in 5 Flute Cobalt

Product Description

The HERTEL 72846454 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel with a bright, uncoated finish, this tool handles tough ferrous and non-ferrous alloys where standard HSS tooling falls short. The 1-inch cutting diameter is matched by a 1-inch shank diameter, giving a rigid, no-reduction setup that limits deflection under heavy cuts. With 5 fine-pitch flutes and a right-hand cutting and flute direction, the tool produces consistent chip evacuation across the full 4-inch length of cut. Center-cutting geometry allows plunge entry without a pre-drilled hole.

This end mill is suited for general machining centers and manual knee mills handling roughing passes on steel, stainless, and similar materials. The M42 cobalt grade holds its hardness at elevated cutting temperatures, making it a practical choice for shops running moderate to high feed rates without flood coolant. The 6.5-inch overall length provides clearance for deeper pockets and setups requiring extended reach past workholding fixtures. It is installed and operated by machinists and tool-and-die professionals in job shop and production environments.

Key Features

• M42 cobalt construction for elevated heat resistance and edge retention
• 5 fine-pitch flutes for efficient chip load distribution on roughing passes
• 4-inch length of cut handles deep-pocket and multi-pass roughing applications
• Center-cutting design permits direct plunge milling without pilot hole
• Right-hand cut and right-hand flute direction for standard spindle compatibility
• 1-inch shank matches 1-inch cutting diameter — no taper or reduction in the setup

Compatibility

Designed as a direct-fit roughing end mill for standard R8, CAT, BT, and HSK toolholders accepting a 1-inch shank diameter on vertical or horizontal milling machines and machining centers.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's toolholding specifications. Confirm the toolholder bore is clean and free of chips before seating the shank to the correct insertion depth. Torque set screws or drawbars per the toolholder manufacturer's recommendations — do not exceed rated clamping force. Inspect the cutting edges for chips or damage before each use and replace the tool when wear exceeds acceptable limits for the finish tolerance required.