Features of the use of step drills

Do you want to drill fast and accurately? The step drill is your new must-have!

Step drill is an excellent tool for drilling sheet metal (designed for materials: sheet steel up to 4-6 mm thick, thin-walled non-ferrous metals, cast iron, drywall, plastics).

The step drill has a specific structure in the form of translational steps, where each subsequent step has a large diameter, which allows you to constantly change the diameter of the hole without stopping work. This feature enhances the cutting ability and significantly increases the smoothness of material processing, allows you to increase drilling efficiency by 50% when processing thin metal.

The main advantage of a stepped (cone) drill is that it can replace a whole set of tools for processing material. Due to the sharp tip characteristic of most step drills, it can cut into the densest metal. Also, a very popular area of use of this tool is the grinding of a ready-made hole. You can easily quickly remove all the chips around the edges without using a screw or a file.

Advantages of using step drills:

• High accuracy. It is a well-known fact that when working with spiral drills, a very sloppy hole is obtained, especially when drilling diameters over 15 mm. So when working with step drills, the edge turns out to be perfectly smooth, even if the metal thickness is less than a millimeter.
• Versatility. You can replace a whole set with just one product, Since the diameter of the drills starts from 4 mm and ends with 50 mm, you can replace a whole set of spiral drills, while saving money. Also, with such drills, you can simultaneously drill a hole and at the same time immediately remove the chamfer.
• Increased strength and rigidity.
• The step drill does not slip off.
• It is easy to drill existing holes.

KORNOR brand step drills are made of high-quality alloy high-speed steel. There are two types of drills in the range:

• With a straight groove. Drills with a straight cutting edge have a simpler geometric shape, so they are easier to sharpen.
• With a spiral groove. It provides smooth running and high cutting capacity, and also contributes to better chip removal from the drilling area.

The shank is cylindrical with triangular milling for better retention in the chuck and prevention of screwing. The sizes and types of drills can be found in the catalog.

Important: A step drill will last much longer if you use a spray or pencil to lubricate and cool the metal.