How Does a Hydraulic Hammer Work?

Author：Alex Update：04-11 View：

The first step in preparing the hammer requires attaching the Chisel. Operators connect the hammer to the excavator or other equipment and use the machine’s controls to guide it.

The hammer operates on the principle of Pascal’s law, which states that applying a force to a confined fluid transmits uniformly in all directions throughout the fluid regardless of the container’s shape. Since hydraulic oil is incompressible, it delivers instant power transfer with minimal loss.

The hammering starts in the cylinder’s valve, which controls the oil flow. During the upward stroke, the main valve releases the pressure in the upper chamber through an outlet, causing the lower chamber to push the piston upwards. As the piston reaches the top part of the stroke, the main valve directs the oil flow to the upper chamber and increases the pressure. Because of the accumulated energy, this action causes the piston to move downward.

At the point of impact, the main valve shifts and releases the pressure from the upper chamber, regenerating the upward stroke.

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