Seco 17011668 Square End Mill 1-1/2 in 2 Flute Cobalt

Product Description

The SECO 17011668 is a single-end cobalt square end mill designed for material removal in ferrous and high-temperature alloy applications. Built from M42 cobalt high-speed steel, it delivers heat resistance and edge retention in demanding cuts. The 1.5-inch cutting diameter pairs with a 1.625-inch length of cut and a 30-degree helix angle for efficient chip evacuation. Two spiral flutes and a centercutting geometry allow both plunge and peripheral milling. The 1.25-inch shank diameter suits standard milling chucks and collets common on vertical and horizontal machining centers. Machinists and tool-and-die professionals working in job shops and production environments are the primary users.

This end mill is suited for milling steel, stainless steel, cast iron, and high-temperature alloys. Its uncoated bright finish makes it a practical choice in applications where coating adhesion or re-sharpening economics are priorities. The right-hand cut, right-hand flute configuration is standard for conventional and climb milling on CNC mills and manual Bridgeport-style machines. With an overall length of 4.125 inches and a non-extended-reach profile, it fits most standard toolholding setups without requiring special adapters.

Key Features

• M42 cobalt construction for elevated heat resistance and wear life in ferrous materials
• 30-degree helix angle promotes smooth chip flow and reduces cutting forces
• Centercutting design allows direct plunge entry without a pre-drilled pilot hole
• Right-hand cut and right-hand flute geometry for conventional milling setups
• Uncoated bright finish compatible with regrinding and re-use cycles
• Two-flute configuration provides chip clearance in tougher, stickier alloys

Compatibility

Designed for use in standard milling operations on steel, stainless steel, cast iron, and high-temperature alloys. The 1.25-inch shank diameter fits toolholders and collet chucks sized for 1-1/4-inch shanks on CNC and manual milling machines. Part of the SECO SP205 series.

Installation Notes

Installation is performed by qualified machinists. Ensure the machine spindle is fully stopped and locked out before inserting or removing the end mill from the toolholder. Verify shank runout and toolholder cleanliness before securing; excess runout accelerates edge wear. Follow machine manufacturer torque specifications for collet nuts and set-screw holders — do not over-tighten.