PRONAL, represented in Australia by Air Springs Supply , has released splitting and lifting cushions that can exert hundreds of tonnes of force to extract quarried material.
The lifting cushions are available in standard sizes from 7mm thick. Using standard industrial air supply pressure of 6-7 bar, the cushions can exert up to 390t of force. They are available with working powers of 160t, 190t, 240t and 330t in starting position. Power can be multiplied by using several cushions in parallel. Loads can be tipped over by placing cushions on top of one another. The lightweight design is based on a high-strength textile base fabric coated with synthetic rubber. The cushions can be used several times and minimise damage to material being quarried