Hertel 41120452 Roughing End Mill 3/4 in 4 Flute Cobalt

Product Description

The HERTEL 41120452 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel with a bright, uncoated finish, it measures 0.75 inches in diameter with a 3-inch length of cut and a 5.25-inch overall length. The 4-flute, right-hand cutting geometry with a right-hand flute direction makes it well suited for roughing passes on ferrous and difficult-to-machine alloys. The center-cutting design allows plunge entry as well as conventional and climb milling. Machinists and tool-and-die professionals install this tool in vertical and horizontal milling machines and machining centers.

This roughing end mill is intended for use in job shops, maintenance machining, and production environments where rapid stock removal is the primary goal. The wave or serrated cutting edge profile typical of roughing end mills breaks chips into smaller segments, reducing cutting forces and heat buildup during deep radial cuts. It fits standard 3/4-inch straight-shank tool holders and collet chucks. The regular length configuration suits the majority of general-purpose milling setups without requiring extended-reach tooling.

Key Features

• M42 cobalt HSS construction for improved heat and wear resistance over standard M2 HSS
• 4-flute single-end roughing geometry for high material removal rates
• Center-cutting design allows direct plunge entry without a pre-drilled hole
• Right-hand cut and right-hand flute spiral for use in standard milling spindles
• Bright, uncoated finish compatible with a wide range of cutting fluids and coolants
• 3-inch length of cut accommodates moderate-depth milling passes

Compatibility

Designed as a direct-fit replacement for 3/4-inch straight-shank roughing end mills in standard ER, R8, and CAT/BT collet and end mill holders used in vertical milling machines and CNC machining centers.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Ensure the machine spindle is fully powered down and at a complete stop before changing tooling. Secure the shank fully within the holder to the recommended grip depth and verify runout with a dial indicator before beginning a cut. Follow the machine tool manufacturer and ANSI B11 safety guidelines for speeds, feeds, and guarding when operating milling equipment.