American Piledriving Equipment, Inc. a U.S. manufacturer of pile driving equipment, specializes in vibratory pile drivers, diesel hammers, drills, pile driving leads and spotters and related deep foundation construction equipment. Largest user of hydraulic vegetable oil in the world. Owns newest and largest rental fleet of deep foundation equipment in the USA. Positioning unit in place to drive a 36" pipe into the riverbed. Drive Force: 255 tons (2,270 kN) How a Vibratory Driver/Extractor Works: Basic Operation: Vibratory driver/extractors are used to drive or extract pipes, sheet piles and various pile profiles unto or out of the ground. As the pile is vibrated, the surrounding soil vibrates, reducing the resistance between the pile and surrounding soil. This method of driving pilings is simpler; it can be done quickly and economically. APE vibratory driver/extractors vibrate at a high frequency and very low noise level. This creates a safer working environment and reduces risk of damage to adjacent houses and buildings. The Suppressor Housing: Mounted on top of the gear box are sets of rubber suppressors that prevent the vibration from reaching the crane line. The Gearbox: The vibratory pile driver/extractor generates a vertical oscillating movement created by timed, rotating eccentrics in a gearbox to create only up and down motion at high speed. The Clamp Attachment: Mounted on the bottom of the gearbox is the clamp attachment which grips the pile and allows the vibro to drive or extract the pile.