Hertel E2030909 Square End Mill 1 Inch 2 Flute Cobalt

Product Description

The HERTEL E2030909 is a cobalt square end mill designed for general-purpose milling in ferrous and difficult-to-machine materials. Built from M42 cobalt high-speed steel, it delivers heat resistance and edge retention that standard HSS tools cannot match. The cutter runs a 1 inch diameter with a 1.5 inch length of cut and a 30-degree helix angle for smooth chip evacuation and consistent surface finish. It ships uncoated and is centercutting, allowing direct plunging into material without a pre-drilled entry hole. A licensed machinist or tool-and-die tech will find this tool suited for production and maintenance milling operations on manual or CNC equipment.

This end mill fits standard milling setups requiring a 0.75 inch shank diameter. The regular-length geometry and 3.75 inch overall length make it appropriate for face milling, slotting, and peripheral milling in steel, stainless, and other tough alloys. The right-hand cut and right-hand spiral flute configuration is compatible with conventional CNC machining centers and manual knee mills using standard toolholders sized for a 0.75 inch shank.

Key Features

• M42 cobalt HSS construction for improved red hardness and edge retention in ferrous alloys
• 30-degree helix angle promotes efficient chip evacuation and reduced chatter
• Centercutting geometry allows direct plunge entry without a pilot hole
• 2-flute design provides clearance for aggressive material removal and slotting operations
• Uncoated finish suitable for use with cutting fluid in a wide range of steels
• Right-hand cut and right-hand flute configuration for standard spindle rotation

Compatibility

Designed as a direct-fit replacement for standard 0.75 inch shank, 1 inch diameter square end mill applications on CNC machining centers and manual milling machines using ER, Weldon, or equivalent 0.75 inch bore toolholders.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Secure the shank fully within the toolholder to the minimum insertion depth recommended for the holder type before tightening. Confirm spindle direction is set to right-hand rotation before engaging the cut. Inspect the cutting edges and toolholder bore for wear or damage before each use.