Hertel 91197525 Roughing End Mill 6mm 4 Flute Cobalt

Product Description

The HERTEL 91197525 is a single-end roughing end mill designed for aggressive material removal in milling applications. Built from M42 cobalt high-speed steel, it delivers heat resistance and edge retention under demanding cutting conditions. The 6 mm diameter cutter features 4 flutes with a fine pitch and a bright, uncoated finish. It has a 13 mm length of cut and an overall length of 57 mm. The right-hand cutting direction and right-hand flute spiral are standard for conventional milling setups. This tool is suited for machinists and toolmakers working in job shops, maintenance facilities, and production environments.

The 91197525 is intended for roughing passes on ferrous and non-ferrous materials where fast stock removal is the priority. The fine pitch geometry produces smaller chips and reduces chatter on lighter cuts. The 6 mm shank diameter matches the cutter diameter, making it compatible with standard collet chucks, end mill holders, and shrink-fit tooling systems that accept 6 mm shanks. Centercutting capability allows for plunge entry, giving the operator flexibility in tool path selection without a separate drill operation.

Key Features

• M42 cobalt HSS construction for elevated heat resistance and wear life
• 4-flute fine pitch design supports efficient chip evacuation on roughing passes
• Centercutting geometry allows direct plunge entry
• Bright uncoated finish suitable for use with or without cutting fluid
• Right-hand cut and right-hand helix for standard spindle configurations
• Single-end design with 6 mm shank for secure toolholder engagement

Compatibility

Designed as a direct-fit replacement for 6 mm shank end mill holders, collet chucks, and shrink-fit systems accepting 0.2362-inch or 6 mm bore toolholders in standard CNC machining centers and manual milling machines.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Ensure the spindle is fully stopped and locked before changing tooling. Verify the toolholder bore and collet size match the 6 mm shank before tightening. Follow machine tool manufacturer torque specifications for the specific toolholder type in use.