Hertel E2175048 Square End Mill 3/4 in 6 Flute Cobalt

Product Description

The HERTEL E2175048 is a cobalt square end mill designed for demanding milling operations in ferrous and difficult-to-machine materials. Built from M42 cobalt high-speed steel, this 6-flute tool delivers a stable, high-productivity cut with a 30-degree right-hand spiral flute geometry. It measures 0.75 inches in diameter with a 4-inch length of cut and a 6.25-inch overall length, placing it in the extra-long reach category. The centercutting design allows plunge entry. It ships uncoated and is intended for machinists and tool room operators working in CNC or manual milling environments.

This end mill is suited for slot milling, profiling, and peripheral milling in steel, stainless, and other tough alloys where cobalt tooling outperforms standard high-speed steel. The extra-long length of cut makes it well-suited for deep-pocket milling, tall workpieces, and applications where standard-length end mills fall short. It carries a right-hand cut and right-hand flute configuration, compatible with conventional vertical and horizontal milling setups. No chipbreaker or variable helix features are present, keeping the geometry straightforward for general-purpose work.

Key Features

• M42 cobalt construction for heat and wear resistance in tough alloys
• 6-flute design increases feed rates and surface finish quality in finishing passes
• 30-degree helix angle promotes smooth chip evacuation and reduced chatter
• Centercutting capability allows direct plunge milling without pre-drilling
• Extra-long 4-inch length of cut for deep pockets and tall part features
• Uncoated finish — suitable for re-sharpening or use with cutting fluids

Compatibility

Designed as a standard-shank square end mill with a 0.75-inch shank diameter, compatible with 3/4-inch collet chucks, end mill holders, and milling machine spindles configured for that shank size.

Installation Notes

Installation should be performed by a qualified machinist. Secure the shank fully within the holder to the recommended engagement depth before tightening — insufficient shank engagement is a leading cause of tool pull-out and breakage. Ensure the spindle and workholding are locked out before changing tooling. Select speeds and feeds appropriate for the workpiece material and cobalt tooling grade; consult published Speeds and Feeds tables for M42 cobalt end mills.