Hertel 87144721 Roughing End Mill 1 in 5 Flute Cobalt

Product Description

The HERTEL 87144721 is a single-end roughing end mill designed for aggressive material removal in ferrous and non-ferrous machining operations. Built from M42 cobalt high-speed steel and coated with TiCN for improved wear resistance and heat tolerance, this tool handles demanding roughing passes where standard HSS tooling falls short. The 1-inch diameter cutter features 5 flutes configured in a right-hand cutting and right-hand flute direction, with a 2-inch length of cut and a 4.5-inch overall length. Machinists and toolroom professionals specify this style of roughing end mill when cycle time reduction and tool life in tough alloys are the primary goals.

This end mill is suited for use on vertical machining centers, knee mills, and manual or CNC milling machines running ferrous alloys, stainless steels, and similar materials where cobalt tooling outperforms standard HSS. The non-centercutting design means it is intended for side milling, peripheral roughing, and slotting entries made through a pre-drilled hole or ramped entry. The 1-inch shank diameter matches the 1-inch cutter diameter for direct collet or end mill holder mounting without adapters.

Key Features

• M42 cobalt construction for improved red hardness and wear resistance over standard M2 HSS
• TiCN coating extends tool life and reduces built-up edge in ferrous applications
• 5-flute roughing geometry increases feed rates while reducing chatter and cutting forces
• Right-hand cut, right-hand helix configuration for conventional milling machine compatibility
• 1-inch shank diameter matches cutter diameter for rigid, direct-mount setup
• Regular length profile suits standard milling applications without excessive overhang

Compatibility

Designed as an OEM-style roughing end mill for use in standard 1-inch end mill holders, collet chucks, or Weldon-shank tool holders on vertical or horizontal milling machines.

Installation Notes

Installation and operation of milling cutters should be performed by qualified machinists following shop safety protocols. Ensure the spindle is fully stopped and locked out before mounting or removing the end mill. Verify tool holder runout before cutting to prevent premature edge failure. Consult the machine manufacturer's specifications for maximum RPM and feed rate limits appropriate to this cutter diameter and material grade.