Hertel 06822340 Roughing End Mill 7/8 in 5 Flute Cobalt M42

Product Description

The HERTEL 06822340 is a single-end roughing end mill designed for aggressive material removal in milling operations. Manufactured from M42 cobalt high-speed steel with a bright, uncoated finish, this tool delivers durability and heat resistance during roughing cuts. The 7/8-inch (0.875 inch) cutting diameter pairs with a 3/4-inch shank diameter and five flutes configured in a right-hand cutting, right-hand flute direction. With a 1-7/8-inch length of cut and 4-1/8-inch overall length, this is a standard regular-length configuration suited to a wide range of roughing applications in machine shop and production environments.

This end mill is used in CNC milling machines, knee mills, and manual machining setups where rapid stock removal is the priority before a finishing pass. The cobalt M42 construction makes it well suited for cutting ferrous metals, stainless steels, and other tough alloys that generate high cutting temperatures. The 5-flute geometry improves chip load distribution compared to 4-flute designs, increasing feed rates without sacrificing tool life. This is a non-centercutting tool, meaning it is not suited for plunge cutting and must be engaged from the side or via a pre-drilled entry point.

Key Features

• M42 cobalt high-speed steel construction for heat resistance in tough alloy cutting
• 5-flute design increases chip load efficiency and supports higher feed rates
• Right-hand cut and right-hand flute direction for standard CNC and manual mill setups
• Bright, uncoated finish suitable for use with cutting fluids in most ferrous materials
• Non-centercutting, single-end configuration for dedicated roughing operations
• Regular length profile fits standard tool holders without extended-reach concerns

Compatibility

Designed as an OEM-style roughing end mill for use in standard 3/4-inch end mill holders, collet chucks, and shrink-fit tooling systems compatible with a 3/4-inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines. Ensure the milling machine spindle is fully stopped and locked out before changing tooling. Secure the 3/4-inch shank to the minimum recommended engagement depth in the tool holder to prevent pullout under high feed loads. Because this is a non-centercutting tool, do not use it for direct plunge entry into solid material.