Guhring 9042500111100 Square End Mill 0.4375 in 4 Flute Carbide

Product Description

The GUHRING 9042500111100 is a solid carbide square end mill designed for high-performance material removal in demanding machining environments. This single-end tool features a 0.4375 inch (7/16 inch) cutting diameter, a 2 inch length of cut, and a 4.5 inch overall length. It carries a FIREX coating, a multi-layer physical vapor deposition finish that extends tool life when cutting ferrous materials. The variable helix geometry reduces vibration and chatter during cuts. With four flutes and a right-hand spiral configuration, it is suited for finishing and semi-finishing passes where surface quality and tool stability matter. Licensed machinists and CNC operators in job shops and production facilities are the primary users.

This end mill is built for milling cast iron and steel as primary workpiece materials, with secondary capability in hard materials, stainless steel, and high-temperature alloys. The long-series length type provides extended reach for deep pocket milling, slotting, and profiling operations where a standard-length tool cannot access the feature. The straight cylindrical shank with h6 tolerance fits standard ER collet chucks and side-lock holders. The FIREX coating and variable helix make it particularly effective on materials that generate high cutting temperatures or cause built-up edge on uncoated tools.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous and hard material applications
• FIREX multi-layer coating extends tool life in high-heat cutting conditions
• Variable helix flute geometry reduces harmonic vibration and chatter
• Four-flute, right-hand spiral, right-hand cut configuration for efficient chip evacuation
• Long-series overall length (4.5 inches) with 2 inch length of cut for deep-feature reach
• Center-cutting capable — suitable for plunge entry as well as peripheral milling
• Straight cylindrical shank with h6 tolerance for precise collet or side-lock chuck fit

Compatibility

Part of the GUHRING Series 4250. Designed for use in CNC machining centers and manual mills equipped with ER collet chucks or other holders accepting a 0.4375 inch straight-cylindrical shank. Primary workpiece materials are cast iron and steel (ISO material codes K and P); secondary workpiece materials include hard materials, stainless steel, and high-temperature alloys (ISO codes H, M, and S).

Installation Notes

Installation and tool changes must be performed with the machine spindle fully stopped and the control in an e-stop or tool-change state. Seat the shank fully into the collet or holder to the recommended gauge length before torquing the retention nut to the holder manufacturer specification. Inspect the cutting edges and coating for chips or damage before each use — do not run a damaged carbide tool. Verify spindle speed and feed rate parameters in the CAM program or operator sheet match the tool diameter and workpiece material before initiating the cut.