YG-1 - 52901 E5018 Carbide Ball Nose End Mill, Extra Long Reach, Uncoated (Bright) Finish, 30 Deg Helix, 2 Flutes, 6" Overall Length, 0.25" Cutting Diameter, 0.25" Shank Diameter

The YG-1 E5018 uncoated carbide extra-long-length ball nose end mill has two flutes and a 30-degree helix angle for machining on hardened and high-alloy steel, steel casting, chill casting, malleable cast iron, chromium-nickel steel, brass, copper, aluminum with a high percentage of silicon, and abrasive plastic. Extra-long-length end mills have longer cutting edges than long-length end mills for applications with a high depth of cut. (Feed should be reduced by around 50%.) The two flutes have better chip-carrying capacity than end mills with more flutes while offering additional support when the tool goes deep into the material in applications with a high depth of cut. The tool’s ball nose creates contoured surfaces where sharp corners are not required. The 30-degree helix angle supports general-purpose applications. It balances lower angles’ strong cutting edge for difficult-to-machine materials with higher angles’ increased cutting action. 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. Carbide is harder than high-speed or cobalt steel, making it more wear resistant at high speeds and providing longer tool life. With no coating or surface treatment, this uncoated tool can be used on a range of materials. Cutting diameter tolerance is + 0.0000 to - 0.0012". 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.

• Suitable for machining on hardened and high-alloy steel, steel casting, chill casting, malleable cast iron, chromium-nickel steel, brass, copper, aluminum with a high percentage of silicon, and abrasive plastic
• Extra-long-length end mills have longer cutting edges and can make deeper cuts than long-length end mills
• Two flutes offer better chip-carrying capacity than end mills with more flutes, enhancing the tool’s ability to remove material
• Carbide can run at higher speeds than high-speed or cobalt steel, resisting wear and high cutting temperatures
• Ball nose end mills (also called ball end) create contoured surfaces­­­