Hertel GG041056 Square End Mill 7/8 in 4 Flute Hss

Product Description

The HERTEL GG041056 is a square end mill designed for general-purpose milling operations in machine shop and production environments. Manufactured from M7 high speed steel, this end mill features a 7/8-inch cutting diameter, a 5-inch length of cut, and a 4-flute spiral configuration with a 30-degree helix angle. The uncoated HSS construction provides consistent performance across a range of ferrous and non-ferrous materials. At 7.25 inches overall length with a 7/8-inch shank diameter, this tool fits standard milling machine and machining center collets and holders. It is a right-hand cut, right-hand flute design and is centercutting, allowing plunge entry directly into the workpiece.

This end mill is suited for side milling, slotting, profiling, and face milling applications in job shop, toolroom, and production settings. The regular-length designation makes it appropriate for standard-reach operations where rigidity is a priority. Machinists working with steel, cast iron, aluminum, and similar materials will find the M7 HSS construction appropriate for moderate feeds and speeds on manual mills and CNC machining centers alike.

Key Features

• 4-flute spiral design with 30-degree helix angle for balanced chip evacuation
• Centercutting geometry allows direct plunge milling without a pilot hole
• M7 high speed steel construction for durability across a range of workpiece materials
• Right-hand cut and right-hand flute configuration for standard milling spindle use
• Uncoated finish suitable for regrinding and toolroom applications
• Matched shank and cutting diameter at 7/8 inch for straightforward tool holding

Compatibility

Designed as a standard-shank square end mill compatible with 7/8-inch collets, end mill holders, and milling chucks used on vertical milling machines and CNC machining centers.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and the machine in a safe, locked-out state. Ensure the shank is clean and fully seated in the holder before tightening to the holder manufacturer's specification. Confirm runout with a dial indicator before initiating a cut, particularly for close-tolerance work. Follow applicable shop safety procedures and machine manufacturer guidelines when setting feeds, speeds, and depth of cut.