Hertel 62888243 Roughing End Mill 1 in 5 Flute Cobalt

Product Description

The HERTEL 62888243 is a single-end roughing end mill designed for aggressive material removal in ferrous and high-temperature alloys. Manufactured from M42 cobalt high-speed steel and coated with TiAlN for extended tool life at elevated cutting temperatures, this mill features five flutes in a coarse-pitch, right-hand spiral configuration. The coarse pitch geometry breaks chips aggressively, reducing heat buildup and chatter during roughing passes. With a 1-inch cutting diameter and a 3-inch length of cut, it handles deep-pocket and side-milling operations in a single setup. Machinists and tool-and-die professionals will find it well-suited to production roughing applications where stock removal rate matters.

This end mill is used in vertical machining centers and manual knee mills for roughing operations in steel, stainless, cast iron, and high-temperature alloys. The center-cutting geometry allows plunge entry without a pre-drilled start hole. The 1-inch shank diameter fits standard R8, CAT, BT, and HSK toolholders with a 1-inch bore. It is a common choice in job shops and production environments where cobalt tooling is specified over carbide for interrupted cuts or materials that are prone to carbide chipping.

Key Features

• M42 cobalt construction withstands heat and intermittent cutting loads better than standard M2 HSS
• TiAlN coating extends tool life and allows higher surface speeds in dry or minimal-lubrication conditions
• 5-flute coarse-pitch design promotes aggressive chip breaking and reduced chatter on roughing passes
• Center-cutting end enables direct plunge entry into the workpiece
• Right-hand cut and right-hand spiral flute direction compatible with standard spindle rotation
• 3-inch length of cut supports deep-pocket roughing without tool changeover

Compatibility

Designed for use in standard 1-inch-bore milling toolholders including R8, CAT, BT, and HSK systems on vertical machining centers and knee mills. Confirm bore tolerance and runout specification of the holder before installation.

Installation Notes

Installation should be performed by a qualified machinist with the spindle at a full stop and machine power locked out per shop safety procedures. The shank should be seated to the full recommended insertion depth in the toolholder and secured to the manufacturer torque specification for the holder type in use. Inspect the cutting edges and coating for chips or wear before mounting. Do not exceed the toolholder's rated speed and torque limits for this shank diameter.