Superior Tool Service offers a four-flute rougher/finisher carbide end mill for cutting hard steel. It’s designed with a variable helix and variable spiral to break up the harmonics and provide a consistent cut along walls or in pockets. Created with chip breakers in two flutes and a finishing edge in the other two flutes, it features increased performance capabilities. The carbide end mills are equipped with square corners, chamfered corners or assorted radiuses up to ball radius. The end mills are also available in five- or six-flute configurations to match a variety of machines and materials. According to the company, in some applications, buying coated tools prolongs their life. TiAlN is stocked, but TiN, TiCN, AlCrN coatings are also available.
The end mills are available in ½", 5/8", ¾" or 1" diameters. They have a 1 1/4" flute length × 4" overall length. Standard and custom radius sizes are available as well as custom chamfers.