DHS200-28-3Y-2Q Hybrid slip rings 28 channels include 3 hydraulic channels and 2 pneumatic channels

The pneumatic liquid hybrid slip ring can pass electric current, gas pressure and even hydraulic pressure. The electrical feedthrough is no different from the design used in any other slip ring. Corrosion-resistant silver-silver or gold-gold contacts are designed as a ring and a brush. The rings and the brushes can be rotated in relation to each other. Each ring-brush connection is assigned a pair of cables which are coloured in the same way. This makes assignment during installation particularly easy.

Passing gas pressure or hydraulic pressure through a slewing ring, on the other hand, is an enormous challenge. A complex duct system is created between the rotor and the stator for the passage of the media. In addition, a central media line ends in a rotating coupling. The weak point in this design is the sealing. However, by using high-quality sealing rubbers and sophisticated engineering, these lines can withstand up to 100 bar – and that at 300 revolutions per minute!