Seco 17010383 Roughing End Mill 3/4 in 4 Flute Cobalt

Product Description

The SECO 17010383 is a single-end cobalt roughing end mill engineered for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel, this tool delivers the heat and wear resistance needed for interrupted cuts and difficult-to-machine materials. It features a 0.75 inch mill diameter, a 1.625 inch length of cut, and a 3.875 inch overall length. The four-flute, right-hand spiral geometry with a 30-degree maximum helix angle promotes efficient chip evacuation while maintaining cutting stability. The bright uncoated finish suits applications where coating is not required or desired. Licensed machinists and tool-and-die technicians are the primary users of this tool class.

This roughing end mill is suited for milling operations on ferrous and non-ferrous metals in job shop, production, and maintenance environments. The 0.75 inch shank diameter allows direct mounting in standard end mill holders, collet chucks, and shrink-fit toolholders sized for 3/4 inch shanks. The regular-length body fits most vertical and horizontal milling machine setups where clearance is not a limiting factor. It is not center-cutting and is intended for peripheral and side milling rather than plunge entry. The Series REM445 designation places this tool in a recognized roughing geometry family designed for chip-splitting and reduced cutting forces.

Key Features

• M42 cobalt high-speed steel construction for elevated heat resistance during high-feed cuts
• Four right-hand flutes with a 30-degree maximum helix angle for efficient chip flow
• 0.75 inch mill diameter and 0.75 inch shank diameter for balanced rigidity
• 1.625 inch length of cut in a regular-length body totaling 3.875 inches overall
• Bright uncoated finish — no additional coating prep required
• Right-hand cutting direction compatible with standard spindle rotation on most milling machines

Compatibility

Designed as a direct-fit replacement or standard tooling selection for 3/4 inch end mill holders, collet chucks, and shrink-fit systems accommodating a 0.7500 inch shank diameter. No specific machine model compatibility was provided by the manufacturer for this part number.

Installation Notes

Installation is performed by licensed machinists or qualified tooling technicians. Power down and lock out the milling machine spindle before inserting or removing the end mill from its holder. Verify holder bore size matches the 0.75 inch shank before tightening to avoid runout and premature tool wear. This tool is not center-cutting — do not use for direct plunge milling; ramp or helical entry is required when full-depth slot cutting is needed.