Double Tube System For Deep Hole Drilling

Double Tube System

The double tube system, DTS, also referred to as the Ejector system, is characterized by two tube construction. It consists of an outer and inner tube connected to a coolant inducer at one end and a drill head at the other by a four-start thread.

How does it work?

The pressurized coolant is introduced by the coolant connector to flow through the annular space between the two tubes, the inner and outer, towards the drill head. Most of the coolant flows through holes in the drill head therefore providing lubrication and chip evacuation within the inner tube of the system. Also, the remaining coolant is directed through the rear of the inner tube. This creates a partial vacuum in the inner tube that sucks the coolant and the chips from the drill head through the inner tube before transferring it to a chip exhaust port that is an interracial part of the coolant connector.

Double Tube Systems Requirements

Double Tube Systems do not require a sealing system and pressure head, unlike the less powerful Single Tube System. The DTS system can be used on conventional machine tools such as lathes, horizontal boring mills and machining centers which have suitable feed mechanisms, rigidity, and our self-contained coolant system. The DTS has more applications than it’s single tube counterpart.

If you want your company’s drilling to be quick and efficient, the double tube system is for you. This system supports drill heads ranging from 19.99 mm – 183.9 mm (.787″-7.240″) in diameter. These tools and this system allow depth to diameter ratios of up to 100x’s dia. You cannot go wrong with this system and here at BTA Heller, we offer a full line of brazed and indexable drill heads and all applicable accessories for this system. Request a quote today for the double tube system and make drilling better for your company.