Seco 17010849 Roughing End Mill 5/8 in 4 Flute Cobalt

Product Description

The SECO 17010849 is a single-end roughing end mill designed for aggressive material removal in milling applications. Built from M42 cobalt high-speed steel, it delivers hardness and heat resistance suited to cutting ferrous metals and tough alloys. The 5/8 inch diameter cutter carries four right-hand spiral flutes with a 30-degree maximum helix angle, producing a shearing action that reduces cutting forces and improves chip evacuation. Overall length is 3-3/8 inches with a 1-1/4 inch length of cut. The bright, uncoated finish is standard for cobalt tooling used in general-purpose roughing work. This tool is installed and operated by machinists and tool-and-die professionals on conventional or CNC milling machines.

The 17010849 is suited for roughing passes on ferrous metals, stainless steels, and heat-resistant alloys where material removal rate is the priority over surface finish. The short flute length and rigid 5/8 inch shank minimize deflection during heavy cuts. It is not center-cutting, so it requires a pre-drilled entry point or ramp entry when cutting enclosed pockets. The Series REM445 designation places this tool in SECO's roughing end mill family intended for shop-floor roughing and semi-finishing operations on manual and CNC milling equipment.

Key Features

• M42 cobalt construction for elevated heat and wear resistance compared to standard HSS
• 4 right-hand spiral flutes with 30-degree helix angle for efficient chip evacuation
• 5/8 inch diameter with matching 5/8 inch shank for balanced rigidity
• 1-1/4 inch length of cut in a short overall length of 3-3/8 inches to minimize overhang
• Bright, uncoated finish — compatible with common cutting fluids and oils
• Not center-cutting — requires pre-drilled or ramped entry into closed pockets

Compatibility

Designed as an OEM-style roughing end mill replacement for milling machine spindles accepting a 5/8 inch straight shank, consistent with Series REM445 tooling specifications.

Installation Notes

This end mill is installed by machinists using a standard end mill holder or collet chuck rated for the 5/8 inch shank diameter. Confirm the shank tolerance (-0.0001 to -0.0005 inches) is within the acceptable range of your toolholder before mounting. Because this tool is not center-cutting, do not plunge directly into solid material — use a pre-drilled hole or a programmed ramp entry. De-energize the machine spindle and lock out power before changing tooling per applicable machine safety procedures.