Seco 17011825 Square End Mill 7/8 in 4 Flute Cobalt

Product Description

The SECO 17011825 is a single-end, four-flute cobalt square end mill designed for material removal in ferrous and non-ferrous machining operations. Ground from M42 cobalt high-speed steel, it delivers increased heat and wear resistance compared to standard M2 HSS tools, making it well-suited for tougher cuts in steel, stainless steel, cast iron, aluminum, and high-temperature alloys. The cutter measures 0.875 inches in diameter with a 1.875-inch length of cut and a 4.125-inch overall length. A 30-degree helix angle promotes smooth chip evacuation and balanced cutting forces. The bright uncoated finish is standard for cobalt tools used across a wide range of general-purpose milling applications.

This end mill is intended for use on vertical machining centers, manual knee mills, and CNC milling setups where a short-length, general-purpose cutter is required. It is centercutting, allowing plunge entry directly into the workpiece. Right-hand cut and right-hand flute geometry make it compatible with standard spindle configurations. Machinists and toolroom operators working in job shops, maintenance environments, or production settings will find it applicable across steel, stainless, cast iron, aluminum and non-ferrous materials, and high-temperature alloys as identified by ISO material codes P, M, K, N, and S.

Key Features

• M42 cobalt steel construction for improved red hardness and wear resistance over standard HSS
• Four flutes with 30-degree right-hand spiral helix for efficient chip removal
• Centercutting design allows direct plunge milling without pre-drilling
• Bright uncoated finish suitable for use with cutting fluids across multiple material types
• Short-length series (SPC408) for improved rigidity in standard-depth milling cuts
• Matched shank and cutter diameter at 0.875 inches for use in standard collet and end mill holders

Compatibility

Designed for use in standard end mill holders, ER collet chucks, and side-lock holders accepting a 0.875-inch shank diameter. Applicable to machining steel, stainless steel, cast iron, aluminum and non-ferrous materials, and high-temperature alloys per Series SPC408 application range.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Seat the shank to the full recommended engagement depth in the holder and verify runout with a dial indicator before commencing cuts. Consult the machine manufacturer and tooling documentation for appropriate speeds, feeds, and coolant strategy for the workpiece material.