Machine-Comparison

Deep hole drilling machines are built in horizontal and vertical configurations, and each has distinct advantages depending on the work. I have operated both types extensively and have helped shops choose between them based on their part mix, floor space, and production requirements. I have helped over a dozen shops make the selection and the decision always comes down to the parts they drill most often, not which configuration is theoretically superior. The choice is rarely about which is technically better and more about which fits the specific application. ...

BTA drilling and gun drilling use different tools, different coolant systems, and different machine designs. I’ve run both types extensively, and the differences in the machines are more than just the spindle RPM range. Here’s what I’ve noticed about the design differences and why they matter. Spindle Design Gun drilling machines have high-speed spindles — typically 5000-12,000 RPM — with lower torque. They’re designed for small-diameter drills that need high surface speed but can’t take high feed force. ...

I’ve run deep hole drilling machines from most of the major builders — TBT, UNISIG, Mollart, Chinese machines, and some custom-built ones. They all drill holes, but each type has its strengths depending on what you’re making. Here’s how I think about the different machine categories. Single-Spool CNC Gun Drills This is the most common type you’ll see in a job shop. A single-spindle machine with a CNC control, capable of drilling diameters from maybe 1mm to 50mm depending on the build. ...