BUYISI 8pcs 1/4in Shank Diameter Double Cut Rotary Files Metal Grinding Tool Drill Bits

Features: *It can process various metals (including hardened steel) and non-metals (such as marble jade bone) and the processing hardness can reach up to HRA90. *It can replace the small grinding wheel with handle in most of the work and there is no dust pollution. *High production efficiency dozens of times higher than processing efficiency with files and nearly ten times higher than processing efficiency with small grinding wheels with handles. *The product has good processing quality and high finish and can process high-precision cavities of various shapes. *Long service life ten times higher than the durability of high-speed steel tools and more than 200 times higher than that of small grinding wheels. *Simple and convenient to use safe and reliable can reduce labor intensity and improve working environment. *The economic benefits are greatly improved and the comprehensive processing cost can be reduced by dozens of times. *Mainly used on pneumatic or electric driven tools the speed is generally 6000-60000 rpm. When using it the tool should be clamped and clamped. The cutting method is preferably up-cut milling avoid reciprocating cutting and prevent chips from flying during work. Specifications: Name: 8 PCS Tungsten Carbide Burr Set Material: tungsten steel Head Dia.: 6 10 and 12mm Head Length: 6 9 16 20 and 25mm Brazed Joint Shank Dia.: 1/4”(6.35mm) Shank Material: 40Cr Overall Length: 50mm to 70mm. Burr Shape: Cylindrical Ball Nosed Cylindrical Ball Ball Nosed Tree. Head Hardness: HRA90 Cut Type: Double Cut Coating: Bright (Uncoated). Max Rotation Speed: 60000 RPM Direction of Rotation: Right Hand/Clockwise Feed Direction: In general burrs are used counter-rotationally or with a swinging motion. Pass the rotary tool rapidly over the workpiece in the direction of rotation to achieve fine Finishes or to achieve very smooth chamfers. Optimal Drive Tool: Straight Angle Die Grinder Robot. Average Drive Tool: Drill Drill Press. Drive Type: Air or Electric. Optimal Fix Type: 6mm Collect and Nut Average Fix Type: Chuck. Materials Applications: Hard Wood Balsa Wax Soapstone Slate Marble Granite Concrete Steel Hardened Steel Weld-Seam Stainless Steel Brass Copper Bronze Aluminum Cast Iron Cobalt Nickel Titanium Zinc Earthenware Terracotta Porcelain Fiberglass Plastic Rubber Fiber-Reinforced Plastics and so on. Burr Applications: Carving Engraving Sculpturing Deburring Contouring Chamfering Milling Cleaning Porting Cutting Grinding Polishing Elongating Holes etc. Recommend: 1. Grind weld grinding hardened steel a tool drive output of 300-500 watts is optimal. 2. For beginners pls choose more smaller burr head dia. than the holes’ dia. and swing-move the burr to enlongate holes otherwise the burrs will chatter in narrow holes caused by not grabbing tool firm and stably. 3. Do not press hard the tool let speed do the work. Package Included: 8pcs Carbide Double Grain Rotary File Set Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.