Hertel 41120353 Roughing End Mill 5/16 in 3 Flute Cobalt

Product Description

The HERTEL 41120353 is a single-end roughing end mill designed for aggressive material removal in milling applications. Manufactured from M42 cobalt high-speed steel with a bright, uncoated finish, it delivers durability and heat resistance suited to interrupted cuts and heavy chip loads. The tool measures 0.3125 inches (5/16 inches) in mill diameter with a 0.375 inch shank diameter, a 0.75 inch length of cut, and a 2.5 inch overall length. Three right-hand flutes in a coarse pitch geometry promote fast stock removal and efficient chip evacuation. This end mill is centercutting, allowing plunge entry directly into the workpiece. Licensed machinists and tool and die tradespeople are the primary installers and users of this tool.

This roughing end mill is suited for use on manual mills, CNC vertical machining centers, and knee mills operating on ferrous and non-ferrous materials. Its coarse pitch and M42 cobalt construction make it a practical choice for rough profiling, slotting, and peripheral milling passes where finish quality is secondary to material removal rate. The regular length and standard shank diameter fit common collet and end mill holder sizes found in production and job-shop environments.

Key Features

• M42 cobalt high-speed steel construction for elevated heat and wear resistance
• Coarse pitch, 3-flute geometry for high chip load and fast material removal
• Centercutting design permits direct plunge milling without pre-drilling
• Right-hand cut and right-hand flute spiral for standard spindle compatibility
• Bright, uncoated finish suitable for a broad range of work materials
• Single-end configuration, regular length for rigid setups

Compatibility

Designed as a standard-shank roughing end mill compatible with 3/8 inch collets and end mill holders on vertical milling machines and CNC machining centers.

Installation Notes

Installation is performed by a qualified machinist following standard toolholding practices. The machine spindle must be fully stopped and locked out before inserting or removing the end mill from the holder. Ensure the shank is seated fully in the collet or end mill holder and that set screws or collet nuts are torqued per the toolholder manufacturer specification. Inspect the cutting edges for chips or damage before each use.