- It is an attachment on an excavator and works on the principle of hydraulics. It applies high pressure from its small canister which has pressurized hydraulic oil stored in it. They are much more powerful than other hand-held hammers and its force is varied based on the force of piston strokes and its size.
- A pile driver is a device used to drive piles (poles) into soil to provide foundation support for buildings or other structures. … When the weight reaches its highest point it is released, and hits the pile, driving it into the ground.