Hertel 41120775 Roughing End Mill 3/4 in 4 Flute Cobalt

Product Description

The HERTEL 41120775 is a single-end roughing end mill engineered for aggressive material removal in metalworking applications. Built from M42 cobalt high-speed steel and coated with TiCN (Titanium Carbonitride), it delivers enhanced heat resistance and wear life compared to standard HSS tooling. The 4-flute, right-hand cutting geometry with a 3/4 inch diameter and 1.625 inch length of cut handles tough ferrous and non-ferrous stock efficiently. The regular-length profile and 3/4 inch straight shank suit standard end mill holders and collet chucks. Centercutting capability allows for direct plunging into workpiece material without a pilot hole. Licensed machinists and toolroom technicians are the primary end users for this cutter.

This end mill is suited for milling operations that require rapid stock removal on steel, stainless, and harder alloys where tool life and chip evacuation matter. At 3.875 inches overall length, it fits comfortably in vertical and horizontal milling machines, CNC machining centers, and manual knee mills. The TiCN coating extends tool life in interrupted cuts and work-hardening materials. Applications include roughing pockets, slots, and profiling passes where a finishing pass will follow.

Key Features

• M42 cobalt HSS construction for superior heat and wear resistance over standard M2 tooling
• TiCN coating adds surface hardness and reduces friction during high-feed roughing passes
• 4-flute right-hand cut geometry with centercutting capability for direct plunge entry
• 3/4 inch diameter shank matches the cutter diameter for direct collet or end mill holder mounting
• Regular-length profile at 3.875 inches OAL suits most standard setups without excessive overhang
• Single-end design concentrates full tool mass behind one cutting end for rigid performance

Compatibility

Designed as an OEM-style replacement or direct-fit roughing end mill for use in any standard 3/4 inch end mill holder, collet chuck, or Weldon-shank style holder configured for 3/4 inch tooling.

Installation Notes

Installation and tool changes must be performed with the machine in a full stop, lockout state per shop safety and OSHA machine guarding requirements. Verify holder runout before tightening and ensure the shank is fully seated to the recommended engagement depth for the holder type in use. Do not exceed the recommended depth of cut for the material being machined. Inspect the cutting edges and TiCN coating before each use and replace the tool at first signs of chipping or coating breakdown to avoid workpiece damage.