YG-1 G8A38 Carbide Micro Ball Nose End Mill, Metric, TIALN Multilayer Finish, 30 Deg Helix, 2 Flutes, 50mm Overall Length, 1.5mm Cutting Diameter, 4mm Shank Diameter

The YG-1 G8A38 TiAlN-coated carbide stub cut-length ball nose end mill has a long-reach shank, two flutes, and a 30-degree helix angle for high-performance machining in recessed areas on hardened steel, heat-resistant steel, and other materials with a Rockwell hardness up to C70. 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 long-reach shank provides greater access to recessed areas of the workpiece than tools with a standard shank length. (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 into the material. The tool’s ball nose creates contoured surfaces, where sharp corners are not required. The 30-degree helix angle 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. The TiAlN coating resists heat better than TiN and TiCN coatings, increasing tool life and performance. It also offers increased hardness compared to TiN and may reduce the need for lubricants based on the application. (TiAlN is suitable for a range of materials, but TiCN or uncoated end mills are recommended for machining aluminum.) The high-performance carbide substrate provides better wear resistance and toughness than standard carbide. It is harder than high-speed or cobalt steel, making it more wear resistant at high speeds and providing longer tool life. Cutting diameter tolerance is + 0.00 to - 0.012 mm for cutting diameters up to and including 6 mm and + 0.00 to - 0.015 mm for cutting diameters over 6 mm. 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 high-performance machining in recessed areas on hardened steel, heat-resistant steel, and other materials with a Rockwell hardness up to C70
• Stub-length cutting edges and long-reach shank increase the strength of the tool while providing access to recessed areas of the workpiece
• Titanium aluminum nitride (TiAlN) coating lubricates the end mill for high-temperature stability and abrasion resistance at high cutting speeds, offering better heat resistance than TiN and TiCN coatings
• High-performance carbide provides better wear resistance and toughness than standard carbide and 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