Guhring 9042520254000 Square End Mill 1 in 4 Flute Carbide

Product Description

The GUHRING 9042520254000 is a solid carbide square end mill engineered for demanding material removal in cast iron and steel applications. It features a 1 inch cutting diameter, a 3.125 inch length of cut, and a 6 inch overall length, placing it in the extra-long length category for extended reach requirements. The FIREX coating provides high heat resistance and reduces friction at the cutting edge. A variable helix design with 35 and 38 degree helix angles minimizes chatter and promotes smooth chip evacuation. Four right-hand spiral flutes and a center-cutting geometry allow plunge, slot, and profile milling operations. This tool is intended for use by machinists and CNC operators in production and job-shop environments.

This end mill is suited for milling operations on cast iron, steel, stainless steel, and hard materials in both horizontal and vertical machining centers. The extra-long length of cut makes it appropriate for deep cavity work, tall workpiece features, and applications where standard-length tools cannot reach. The Weldon flat shank with a 1 inch diameter provides positive drive and is compatible with standard Weldon-style end mill holders. The Series 4252 designation identifies this as part of a GUHRING high-performance end mill family optimized for aggressive feed rates in tough ferrous materials.

Key Features

• FIREX coating for elevated heat resistance and extended tool life in ferrous materials
• Variable helix at 35 and 38 degrees reduces harmonic vibration during cutting
• Extra-long 3.125 inch length of cut for deep cavity and tall-feature milling
• Center-cutting geometry enables direct plunge entry into the workpiece
• Weldon flat shank for secure, positive drive in standard end mill holders
• Solid carbide construction for rigidity and dimensional stability at elevated cutting speeds

Compatibility

Designed for use in standard 1 inch Weldon-style end mill holders on CNC vertical and horizontal machining centers. Primary workpiece materials are cast iron and steel; secondary rated materials include stainless steel and hard materials.

Installation Notes

This tool is installed and changed by machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the control is in an e-stop or locked-out state before changing tooling. Seat the Weldon flat against the setscrew in the holder and torque the setscrew per the holder manufacturer specification. Confirm runout with a dial indicator before beginning a production cut, particularly given the extra-long length of cut which amplifies deflection if the tool is not properly seated.