Hertel E2034032 Square End Mill 0.5in 4-flute Cobalt M42

Product Description

The HERTEL E2034032 is a cobalt square end mill designed for milling operations in ferrous and high-temperature alloy materials. Built from M42 cobalt high-speed steel, this single-end tool features four spiral flutes with a 30-degree helix angle, delivering smooth chip evacuation and consistent cutting performance. It carries a 0.5-inch mill diameter, a 2-inch length of cut, and a 4-inch overall length on a 0.5-inch straight shank. The long-series configuration provides added reach in deep-pocket and slotting applications. Machinists and tool-and-die professionals rely on cobalt tooling like this when carbide is cost-prohibitive or when some material flex tolerance is acceptable.

This end mill is suited for use in manual knee mills, CNC vertical machining centers, and bridgeport-style machines handling steel, stainless steel, cast iron, and similar materials. The right-hand cut and right-hand spiral flute configuration is standard for conventional and climb milling on vertical spindles. The 2-inch length of cut makes it appropriate for full-depth slotting, peripheral milling, and step milling in medium-depth pockets. It is not center-cutting, so it requires a pre-drilled entry hole for plunge operations.

Key Features

• M42 cobalt HSS construction for toughness in ferrous and abrasion-resistant materials
• 4-flute spiral design with 30-degree helix angle for efficient chip evacuation
• Long-series length of cut at 2 inches for deep-pocket and slotting reach
• Right-hand cut and right-hand flute direction — standard for vertical machining setups
• Uncoated finish — ready for use with cutting fluid or oil mist lubrication
• Not center-cutting — requires pre-drilled entry point for plunge milling

Compatibility

Designed as a direct-fit replacement for standard 0.5-inch shank square end mill holders, collet chucks, and side-lock arbors accepting a 0.5-inch straight shank. Suitable for manual mills and CNC machining centers with ER32, ER40, or equivalent collet systems sized for 0.5-inch tooling.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Ensure the spindle is fully stopped and locked before changing tooling. Clean the shank and collet bore of chips and oil film before seating to prevent runout. Verify tool stick-out is minimized to the application requirement to reduce deflection, and confirm the tool holder torque spec matches the machine manufacturer guideline.