Hertel 91192492 Roughing End Mill 3/16 in 3 Flute Cobalt

Product Description

The HERTEL 91192492 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel, it delivers strong heat and wear resistance for cutting ferrous and high-temperature alloys. The coarse pitch flute geometry breaks chips efficiently and reduces cutting forces, making it well suited for roughing passes where stock removal rate matters more than surface finish. With a 3/16 inch mill diameter, a 1/2 inch length of cut, and a 3/8 inch shank diameter, this end mill fits standard milling chucks and collet holders used in production and job-shop environments. Installation and use require a licensed machinist or qualified CNC/manual mill operator.

This end mill is intended for roughing operations on milling machines, machining centers, and manual knee mills. The 3/16 inch diameter makes it appropriate for slot milling, profiling, and pocket roughing in tight or narrow features. The bright, uncoated finish keeps costs low for general-purpose roughing where a coating is not required. Right-hand cutting and right-hand flute direction are standard for conventional toolholder setups. It is centercutting, which allows plunge entry directly into the workpiece without a pre-drilled starting hole.

Key Features

• M42 cobalt HSS construction for improved hot hardness compared to standard M2 tooling
• Coarse pitch roughing geometry for rapid stock removal and efficient chip evacuation
• Centercutting design allows direct plunge milling without a pilot hole
• Right-hand cut, right-hand flute direction for use in standard toolholder configurations
• Bright, uncoated finish suited for general roughing applications
• Single-end construction — resharpenable from the cutting end

Compatibility

Designed as an OEM-style roughing end mill for use in standard 3/8 inch bore milling chucks, collet holders, and shrink-fit systems on vertical or horizontal milling machines and machining centers.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully stopped and the tool is secure in the holder before engaging the workpiece. Verify runout with a dial indicator before production use to maximize tool life and surface quality. Follow applicable OSHA machine guarding requirements for milling operations.