Hertel 84512086 Roughing End Mill 7/8 in 5 Flute Cobalt

Product Description

The HERTEL 84512086 is a single-end cobalt roughing end mill designed for aggressive material removal in milling applications. Built from M42 cobalt high-speed steel with a bright, uncoated finish, this end mill delivers durability and heat resistance in demanding cutting conditions. The tool features a 7/8 inch mill diameter, a 7/8 inch length of cut, and a 3.125 inch overall length. With five fine-pitch flutes and a right-hand cutting and flute direction, it is suited for machinists and toolroom professionals performing roughing passes on ferrous and non-ferrous materials.

This roughing end mill is intended for use in vertical machining centers, knee mills, and manual milling machines across job shop, production, and maintenance environments. The center-cutting design allows plunge entry as well as standard peripheral milling. The fine-pitch, five-flute configuration reduces chatter and supports higher feed rates during roughing passes. It is a practical choice for shops working steel, stainless steel, and similar alloys where material removal rate and tool longevity are priorities.

Key Features

• M42 cobalt HSS construction for elevated heat and wear resistance
• Five fine-pitch flutes for improved chip evacuation and feed rate during roughing
• Center-cutting geometry allows direct plunge entry
• Right-hand cut and right-hand flute direction for standard spindle operation
• Bright, uncoated finish — no coating buildup affecting dimensional tolerance
• Uniform 7/8 inch shank and mill diameter for straight shank toolholders

Compatibility

Designed as an OEM-style roughing end mill for use in standard straight-shank toolholders accepting a 7/8 inch shank diameter on vertical mills and machining centers.

Installation Notes

Installation should be performed by a qualified machinist. Secure the shank in a collet or end mill holder rated for 7/8 inch straight shanks and verify runout before cutting. Power down and lock out the machine spindle before inserting or removing the tool. Follow the machine manufacturer and applicable shop safety guidelines for speeds and feeds appropriate to the workpiece material.