Gun Drilling Process



The gun drilling process is a deep hole drilling method. This method uses a long thin cutting tool that creates holes to create high depth-to-diameter ratios. In addition, gun drilling is very effective in diameters ranging from 1 mm to 50 mm.  When it comes to gun drilling the head has a unique design that […]

Trepan Tools



Trepan tools are used in the trepanning process. There are a variety of trepan tools such as a deep straight shank trepan tool assembly. Also, there is the trepan head. In addition, there are pads and bits as well. Many times we get the question what is trepanning machining? Trepan Tools and Their Uses Trepanning […]

Skiving Machine and Tools



At BTA Heller, a division of Sunnen, we offer some of the industry’s best skiving machine and tools. The skiving roller burnishing process can increase feed rates over other processes. When it comes to finishing on DOM tubing or seamless tubes, skiving is the fastest method. Sunnen offers two skiving machines to choose from the […]

Aluminum Drilling Machine



At BTA Heller, our drilling heads can be used on a number of metal materials. One of the most popular is aluminum. When using an aluminum drilling machine with BTA Heller drill heads, your job becomes much easier. In addition, a Sunnen drilling machine combined with a BTA Heller drill head is the perfect match. […]