Hertel GG041116 Square End Mill 1.25in 4 Flute Hss

Product Description

The HERTEL GG041116 is a 4-flute square end mill designed for general-purpose milling operations in metal fabrication and machining environments. Built from M7 high speed steel with a bright, uncoated finish, it delivers reliable performance across a range of ferrous and non-ferrous materials. The cutter measures 1.25 inches in diameter with a 6-inch length of cut and an 8.5-inch overall length, making it well suited for deep-reach slotting, peripheral milling, and profiling applications. A 30-degree helix angle promotes efficient chip evacuation and smooth cutting action. This end mill is installed and operated by machinists and tool-and-die professionals in job shop and production environments.

This end mill fits standard milling machines, CNC machining centers, and manual knee mills that accept a 1.25-inch shank. It is configured for right-hand cut with right-hand flute direction and is center-cutting, allowing plunge entry. The regular-length classification and spiral flute geometry make it a practical choice for general-purpose roughing and finishing passes where extended reach is not required. Typical applications include steel, aluminum, and alloy stock removal in both horizontal and vertical milling setups.

Key Features

• M7 high speed steel construction for durability in production milling
• 4-flute spiral geometry with 30-degree helix angle for efficient chip evacuation
• Center-cutting design allows direct plunge entry without pre-drilling
• Right-hand cut and right-hand flute direction for standard milling spindle compatibility
• Bright, uncoated finish suitable for a wide range of workpiece materials
• 1.25-inch shank diameter for secure tool-holder engagement

Compatibility

Designed as a standard-shank replacement end mill for milling machines and CNC machining centers accepting a 1.25-inch diameter tool holder or collet chuck.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's tooling guidelines. Ensure the spindle is fully powered down and locked out before changing tooling. Seat the shank fully into the tool holder and torque the retention mechanism per the holder manufacturer's specification. Verify runout with a dial indicator before beginning a cut to avoid premature tool wear or workpiece damage.