Osg 8556580 Square End Mill 4mm 5 Flute Solid Carbide

Product Description

The OSG 8556580 is a solid carbide square end mill designed for precision milling operations in metalworking and machining applications. With a 4 mm cutting diameter and a 6 mm length of cut, this five-flute end mill delivers efficient material removal and excellent surface finish in a compact form factor. The Duarise coating provides enhanced wear resistance and thermal protection, extending tool life in demanding cutting conditions. The variable helix geometry reduces harmonic vibration and chatter, improving cut quality and dimensional accuracy. This tool is intended for use by machinists and CNC operators working in job shop, production, and toolroom environments.

The OSG 8556580 is suited for milling ferrous and non-ferrous materials where tight tolerances and fine finishes are required. The 6 mm shank diameter fits standard ER collet chucks and milling tool holders common to CNC machining centers and manual mills. The right-hand cutting and right-hand flute direction are consistent with conventional milling machine spindle configurations. Centercutting capability allows for plunge milling in addition to peripheral and slot milling operations. The single-end design and 45 mm overall length keep the tool compact and rigid for short-reach applications.

Key Features

• 4 mm cutting diameter with 6 mm length of cut for precise, controlled material removal
• Five-flute design increases feed rates and improves surface finish compared to standard four-flute tools
• Duarise coating provides wear resistance and heat reduction during high-speed machining
• Variable helix geometry reduces chatter and harmonic vibration for improved cut stability
• Micrograin solid carbide construction delivers rigidity and edge retention
• Centercutting geometry supports plunge entry without pre-drilling

Compatibility

Designed for use in CNC machining centers and manual milling machines equipped with ER collet chucks or tool holders accepting a 6 mm shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool from the holder. Seat the shank to the minimum recommended engagement depth in the collet or tool holder and torque the collet nut according to the tool holder manufacturer specifications. Verify runout with a dial indicator before beginning production cuts.