Hertel 91192468 Roughing End Mill 3/4 in 4 Flute Cobalt

Product Description

The HERTEL 91192468 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, it delivers toughness and heat resistance in demanding cutting environments. The 4-flute, right-hand cutting configuration with a 0.75-inch length of cut makes it well suited for roughing passes on ferrous metals, alloy steels, and similar workpiece materials. This tool is installed by machinists and tool-and-die professionals working with manual or CNC milling machines.

This end mill is used in single-pass roughing applications where rapid stock removal is the priority before a finishing pass. Its 0.75-inch shank diameter matches standard ER collet and end mill holder tooling found on most vertical and horizontal milling centers. The 3-inch overall length provides adequate reach for most standard workholding setups. It is not centercutting, so it is not intended for plunge milling operations.

Key Features

• M42 cobalt high-speed steel construction for elevated heat and wear resistance
• 4-flute geometry optimized for roughing and high material removal rates
• Right-hand cutting and right-hand flute direction for standard spindle operation
• Bright, uncoated finish suitable for general-purpose roughing without coating-specific coolant requirements
• Single-end design with 0.75-inch length of cut and 3-inch overall length
• Non-centercutting — intended for peripheral and slot roughing, not plunge entry

Compatibility

Designed as an OEM-style replacement or direct-use roughing end mill for milling machines accepting a 0.75-inch shank diameter in standard ER collets, end mill holders, or side-lock holders.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's toolholding specifications. Ensure the machine spindle is fully stopped and locked before changing tooling. Seat the shank to the full recommended grip length in the holder to prevent pullout under roughing loads. Verify runout with a dial indicator after seating when tolerances are critical.