YG-1 E2001 Cobalt Steel Square Nose End Mill, Double End, Uncoated (Bright) Finish, 30 Deg Helix, 2 Flutes, 2" Overall Length, 0.15625" Cutting Diameter, 0.1875" Shank Diameter

The YG-1 E2001 uncoated cobalt steel stub-length double-end miniature square nose end mill has two flutes, varying helix angles depending on tool size, and a center-cutting design for finishing precision components made from steel, stainless steel, titanium, titanium alloys, hard brass and bronze, copper, plastic, wood, aluminum, and aluminum alloys. The tool has a small cutting and shank diameter, allowing better control over the size of the cut than larger tools when creating precise details and contours. The double-end design has cutting edges on both ends, allowing a new cutting surface to be substituted when the first shows wear, which doubles the tool’s life compared to single-end square end mills. The stub length increases tool strength and makes it less likely to break in the material being machined. It is best used when depth of cut is shallow. The tool’s square end creates sharp, unrounded cuts. The two flutes have better chip-carrying capacity than end mills with more flutes. The center-cutting design has cutting teeth at the end of the tool, so it can be fed into the workpiece like a drill bit. End mills with a cutting diameter up to 3/32" have a 39-degree helix angle, which provides more support behind the cutting edge than higher angles, and increases cutting action and chip evacuation compared to the standard 30-degree helix. It efficiently cuts difficult-to-machine material, moving it up the spiral and away from the workpiece. End mills with a cutting diameter of 7/64" or larger have a 30-degree helix angle, which balances lower angles’ strong cutting edge for difficult-to-machine materials with higher angles’ increased cutting action. Cobalt steel can be run at faster speeds and stays sharp longer than high-speed steel tools, while offering resistance to heat and abrasion. With no coating or surface treatment, it features just the base material to help the miniature tool retain its sharp edges and tight tolerances. Cutting diameter tolerance is + 0.0000 to - 0.0010" for end mills with a different shank and cutting diameter and + 0.0000 to - 0.0015" for end mills with the same shank and cutting diameter. The round shank accommodates a range of tool holders. End mills are designed to remove material and create multi-dimensional shapes and profiles. They have cutting edges along the outside diameter and flutes that remove chips from the cutting area and allow cooling fluids to enter. If heat is not reduced effectively, the tool’s cutting edges will dull and additional material buildup can occur. The number of flutes can range from two to eight. Two-flute designs offer the most efficient chip removal, but more flutes provide a smoother finish. The shank is the end of the tool held in place by a tool holder or machine. Center-cutting end mills can create three-dimensional shapes and profiles, and make plunge cuts similar to a drill bit. Non-center-cutting end mills are for applications such as peripheral milling and finishing, but cannot make plunge cuts. YG-1 manufactures drills, taps, end mills, and rotary tooling. The company, founded in 1981, is headquartered in South Korea and has a U.S. office in Vernon Hills, IL.

• Miniature end mills have small cutting and shank diameters for better control than larger tools when creating precise details and contours
• Double-end square end mills create sharp, unrounded cuts and have cutting edges on both ends for longer tool life
• Suitable for use on steel, stainless steel, titanium, titanium alloys, hard brass and bronze, copper, plastic, wood, aluminum, and aluminum alloys
• Stub length increases the strength of the tool, making it less likely to break in the workpiece
• Cobalt steel resists abrasion and high cutting temperatures, and has higher feed rates than high-speed steel