English to Spanish Science Engineering (general) Mining systems

Hi,

I´d be grateful if you gave me a hand with the translation of the term "powered roof support".

Here's some context:

"The XX dual solenoid is at the forefront of powered roof support electro-hydraulic developments."

"Bigger valves with higher flow capacity can be positioned in an area of the support where there is less congestion.
This improves the performance and cycle time of a powered roof support while also reducing the number and length of hose runs, resulting in a “cleaner” support allowing for easier maintenance."

I googled the term and found several sites where it was translated as "entibaciones progresivas", but I suspect it's not a correct translation --at least the "progresivas" part.

Thanks!