Hertel 91192195 Roughing End Mill 5/8 in 3 Flute Cobalt

Product Description

The HERTEL 91192195 is a single-end cobalt roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel, it delivers heat resistance and edge retention when cutting tough ferrous and stainless materials. The coarse-pitch flute geometry breaks chips into smaller segments, reducing cutting forces and heat buildup at the tool-workpiece interface. At 5/8 inch diameter with a 2.5-inch length of cut and 4.625-inch overall length, this tool is suited for full-slot and peripheral roughing passes on CNC machining centers and manual knee mills. Machinists and toolroom operators install this end mill as a first-operation roughing tool before a finishing pass.

This roughing end mill is used in job shops, production machining, and maintenance toolrooms for roughing operations on steel, alloy steel, and similar hard metals. The centercutting design allows plunge entry, giving the machinist flexibility for slot milling, pocket entry, and profiling in a single setup. The bright uncoated finish makes it well suited for applications where coolant lubricity is sufficient and coating adhesion is not required.

Key Features

• M42 cobalt construction for improved heat and wear resistance over standard HSS
• Coarse-pitch roughing profile reduces cutting forces and improves chip evacuation
• Centercutting geometry enables direct plunge entry without a pre-drilled hole
• Right-hand cut and right-hand flute direction for standard CNC and manual mill spindles
• Bright uncoated finish compatible with flood coolant and cutting oil applications
• Single-end design with 5/8 inch shank for direct collet or end mill holder mounting

Compatibility

Designed as an OEM-style replacement or direct-use roughing end mill for 5/8 inch collet chucks, end mill holders, and milling arbors used on standard CNC machining centers and manual vertical mills.

Installation Notes

Installation is performed by machinists using a compatible 5/8 inch collet or end mill holder. Ensure the spindle is fully powered down and locked before changing tooling. Verify runout with a dial indicator after seating the shank to minimize tool deflection and premature wear. Follow the machine tool manufacturer guidelines and applicable shop safety procedures when setting depth of cut and feed rates for roughing operations.