Hertel 75987719 Roughing End Mill 0.5 in 3 Flute Cobalt

Product Description

The HERTEL 75987719 is a single-end cobalt roughing end mill designed for aggressive material removal in demanding machining applications. Built from M42 cobalt high-speed steel and finished with a titanium carbonitride (TiCN) coating, this tool handles tough ferrous and stainless materials where standard HSS tooling falls short. The 0.5 inch diameter cutter runs three flutes in a coarse-pitch configuration, reducing cutting forces while clearing chips efficiently. The right-hand cut and right-hand flute direction suit standard vertical and horizontal milling setups. Center-cutting capability allows plunge entry without a pilot hole.

This end mill is well suited to roughing passes on steel, alloy steel, and similar hard materials in job shop, toolroom, and production floor environments. The coarse-pitch flute geometry breaks chips into smaller segments, making it particularly effective on deep slots and pockets where chip evacuation is a concern. The 1.25 inch length of cut and 3.25 inch overall length position it for standard-depth roughing operations on CNC machining centers and manual knee mills. No extended reach geometry means rigidity is maximized at this projection length.

Key Features

• M42 cobalt HSS construction resists heat and wear on tough alloys
• TiCN coating extends tool life and reduces built-up edge
• Coarse-pitch, 3-flute design promotes aggressive chip clearing
• Center-cutting configuration permits direct plunge entry
• Right-hand cut and flute direction for standard spindle rotation
• 0.5 inch shank diameter matches standard collet and end mill holder sizes

Compatibility

Designed as a direct-fit roughing end mill for any milling machine or machining center equipped with a 0.5 inch collet, end mill holder, or Weldon-style tool holder accepting a 0.5 inch shank.

Installation Notes

Installation should be performed by a qualified machinist or tool setter with the spindle fully de-energized and locked out per applicable machine safety procedures. Seat the shank to the full recommended engagement depth in the holder and verify runout before cutting. Inspect the TiCN coating and cutting edges before each use; chipped or worn edges should be replaced rather than reground without proper cobalt grinding capability. Follow the machine manufacturer feed and speed recommendations for cobalt HSS tooling in the specific workpiece material.