Guhring 9033660100000 Square End Mill 0.3937 in 4 Flute

Product Description

The GUHRING 9033660100000 is a solid carbide square end mill designed for precision milling operations in ferrous and non-ferrous materials. Built to Series 3366 specifications, it features a 0.3937 inch (10 mm) cutting diameter, a 0.8661 inch (22 mm) length of cut, and a variable helix angle of 40 to 42 degrees. The FIREX coating provides enhanced heat resistance and extended tool life in demanding cutting environments. With four flutes and a right-hand spiral configuration, this single-end mill delivers consistent chip evacuation and surface finish. It is center-cutting capable, allowing plunge entry where required. Installed by machinists and toolroom professionals, this end mill suits CNC machining centers and manual mills alike.

This end mill is suited for high-performance milling applications where tool rigidity and coating durability are critical. The solid carbide construction and FIREX finish make it well-suited for harder workpiece materials and higher cutting speeds. The 0.3937 inch shank diameter matches the cutting diameter for straightforward toolholder compatibility. The overall length of 72 mm (approximately 2.835 inches) keeps the tool compact for improved rigidity in standard depth-of-cut applications. Typical use cases include side milling, slotting, and profiling on CNC machining centers in job shop and production environments.

Key Features

• Solid carbide construction for high stiffness and wear resistance
• FIREX coating for elevated heat resistance and extended tool life
• Variable helix angle of 40 to 42 degrees reduces chatter and improves surface finish
• Four right-hand spiral flutes with center-cutting capability
• Single-end design with 0.3937 inch shank diameter for standard ER and hydraulic toolholders
• Series 3366 regular length type for balanced reach and rigidity

Compatibility

Designed as an OEM-style solid carbide square end mill suitable for standard 10 mm collet chucks, ER toolholders, and hydraulic chucks used in CNC machining centers and manual knee mills.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the tool changer or spindle lock is engaged before inserting or removing the end mill. Use a properly sized collet or toolholder matched to the 0.3937 inch shank diameter and torque the retention mechanism according to the toolholder manufacturer specifications. Inspect the cutting edges for chips or damage before each use and replace the tool if edge integrity is compromised.