Hertel E107111601 Square End Mill 1-1/4 in 3 Flute Hss

Product Description

The HERTEL E107111601 is a single-end, square-profile end mill designed for milling operations in ferrous and non-ferrous metals. Built from M7 High Speed Steel with a bright, uncoated finish, it runs a 1-1/4 inch diameter with a 4 inch length of cut and an overall length of 6-1/2 inches, placing it in the long-length category for extended-reach work. The 42-degree helix angle promotes efficient chip evacuation and reduces chatter in deep-slot and peripheral milling passes. With three flutes and right-hand cutting and flute direction, this tool is suited for machinists and tool-and-die professionals running manual mills or CNC machining centers.

This end mill is appropriate for general-purpose milling applications where a long-reach, large-diameter cutter is required. Typical uses include slotting, profiling, and face milling in medium to heavy cuts on steel, cast iron, and similar workpiece materials. The center-cutting geometry allows plunge entry, giving the operator flexibility in tool path strategy. It is well-suited for job shops, maintenance machining environments, and production floors where HSS tooling is preferred over carbide for interrupted cuts or variable-hardness stock.

Key Features

• 1-1/4 inch cutting diameter with matching 1-1/4 inch shank diameter for direct collet or end mill holder mounting
• 4 inch length of cut provides extended reach for deep pockets and stepped features
• M7 High Speed Steel construction balances toughness and wear resistance for ferrous machining
• 42-degree right-hand spiral helix promotes chip flow and reduces heat buildup at the cutting edge
• Center-cutting design permits plunge milling without a pre-drilled pilot hole
• Bright, uncoated finish — compatible with cutting fluid application for thermal management

Compatibility

Designed as an OEM-style replacement or direct-use end mill fitting standard 1-1/4 inch end mill holders, collet chucks, and hydraulic toolholders used on vertical and horizontal milling machines and CNC machining centers.

Installation Notes

Installation should be performed by a qualified machinist following standard toolholding procedures. Ensure the machine spindle is fully stopped and locked out before inserting or removing the end mill. Seat the shank to the full recommended insertion depth in the holder and torque the retention screw or collet nut to the toolholder manufacturer specification. Confirm runout with a dial indicator before beginning a cut, particularly given the long-length geometry.