While they are initially more expensive than twist drills, the reduced downtime for tool changes and the longer tool life of indexable U drills result in lower overall cost per hole drilled. This makes them an attractive option for high-volume production drilling, where the savings from reduced tool changes can quickly offset the higher initial cost of the tools. Indexable U drills are available in a variety of sizes and styles to suit different drilling applications. Some of the most common types of indexable U drills include: Solid Carbide U drills: These are the most common type of indexable U drill, and are used for drilling a variety of materials, including steel, cast iron, and stainless steel. Insert U drills: These are similar to solid carbide U drills, but feature replaceable inserts that can be rotated into position as they wear. This provides longer tool life and reduced downtime for tool changes. Coolant-fed U drills: These are similar to solid carbide U drills, but feature a coolant fed through the center of the tool, which helps to extend tool life and improve drilling performance. Indexable U drills are typically used in CNC machining centers, but can also be used in a variety of other drilling applications, including drilling on lathes and drilling in portable hand-held drill presses. In conclusion, indexable U drills are an efficient and cost-effective solution for drilling, offering a number of advantages over conventional twist drills. Whether you are drilling steel, cast iron, stainless steel, or any other material, an indexable U drill can help you produce accurate, straight holes quickly and efficiently, reducing your cost per hole drilled and increasing your overall productivity.
