The Silent Piler grips the previously installed piles with the hydraulically operated Clamps. The next pile is then gripped by the Chuck at the press-in point and jacked into the ground with the static load generated by the Hydraulic Rams.

During the jacking, penetration resistance comprising of skin friction, toe resistance and interlock resistance occurs. It has the effect to convert a press-in force to a reactive lifting force but a greater force, provided by the extraction resistance of the reaction piles, resists this. Consequently the down-stroke force acts on the pile to penetrate the ground.