Hertel E2051064 Square End Mill 1 in 4 Flute Cobalt

Product Description

The HERTEL E2051064 is a cobalt square end mill designed for milling operations in metal fabrication and machining environments. Built from M42 cobalt high-speed steel, this tool delivers heat resistance and edge retention needed for cutting ferrous materials and harder alloys. It features a double-end configuration with 4 spiral flutes and a 30-degree helix angle, providing efficient chip evacuation and stable cutting geometry. With a 1 inch cutting diameter and 1-7/8 inch length of cut, it handles slotting, side milling, and peripheral milling tasks. The uncoated finish is standard for M42 cobalt tooling. Machinists and tool-and-die professionals are the primary users of this end mill.

This end mill is suited for use in manual knee mills, CNC vertical machining centers, and bridgeport-style milling machines running ferrous stock, stainless steel, and similar materials. The double-end design extends tool life by providing two usable cutting ends per tool. The right-hand cut and right-hand flute configuration matches conventional spindle rotation on standard milling equipment. Regular-length classification makes it appropriate for general-purpose milling depths without extended-reach requirements.

Key Features

• M42 cobalt high-speed steel construction for heat and wear resistance in hard materials
• Double-end design provides two cutting ends per tool, extending service life
• 4 spiral flutes with 30-degree helix angle for efficient chip evacuation
• Right-hand cut and right-hand flute for standard spindle compatibility
• Uncoated finish — no coating buildup risk on close-tolerance cuts
• Non-centercutting geometry — suited for peripheral and side milling, not plunge cutting

Compatibility

Designed as an OEM-style replacement or standard tooling selection for 1 inch straight-shank milling tool holders used in manual and CNC vertical milling machines with right-hand spindle rotation.

Installation Notes

A licensed machinist or toolroom professional should install this end mill into a properly sized collet or end mill holder rated for 1 inch shank diameter. Ensure the machine spindle is fully stopped and the power is locked out before changing tooling. Verify tool runout with a dial indicator after installation to avoid premature edge wear. This tool is non-centercutting and should not be used for direct plunge operations.