Guhring 9042520127000 Square End Mill 0.5in 4F Carbide

Product Description

The GUHRING 9042520127000 is a solid carbide square end mill designed for high-performance material removal in demanding machining applications. Part of the Series 4252 lineup, this single-end mill features a variable helix geometry with angles ranging from 35 to 38 degrees, reducing harmonic vibration and improving surface finish during cuts. At 0.5 inches in diameter with a 3-inch length of cut and 5-inch overall length, it is built for extra-long reach operations where standard-length tooling falls short. The FIREX coating provides enhanced thermal resistance and wear protection, extending tool life in abrasive and hard materials. Installation is performed by machinists on CNC milling centers or manual knee mills.

This end mill is suited for milling cast iron, steel, stainless steel, and hard materials in both roughing and finishing passes. The centercutting design allows plunge entry, and the right-hand spiral flute with right-hand cut orientation makes it compatible with standard spindle setups. The Weldon flat shank provides positive drive and resistance to pullout under high feed rates. Its extra-long length of cut makes it well matched for deep-pocket milling, slot milling, and profile work where reach is a primary concern. It is appropriate for production environments handling medium to high hardness ferrous workpieces.

Key Features

• Variable helix angles of 35 and 38 degrees reduce chatter and improve chip evacuation
• FIREX coating improves thermal and wear resistance in hard and abrasive materials
• Centercutting design enables plunge milling without a pre-drilled entry point
• Weldon flat shank resists pullout under aggressive feed conditions
• Extra-long 3-inch length of cut supports deep-pocket and extended-reach operations
• Solid carbide construction provides rigidity and edge retention superior to HSS tooling

Compatibility

Designed for use with standard 0.5-inch collet chucks, end mill holders, or Weldon-style side-lock holders on CNC machining centers and manual mills. Primary workpiece materials are cast iron and steel; secondary materials include stainless steel and hard materials per material codes K, P, H, M, and S.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and machine power is locked out before inserting or removing the end mill. Seat the Weldon flat against the set screw in the holder and tighten to the tool holder manufacturer's specification to prevent axial pullout. Verify runout with a dial indicator before initiating cutting operations, especially at extended reach.