How to understand the Eccentric Moment, Frequency and Excitation Force in Vibro Hammer?

When selecting a hydraulic vibratory hammer, many customers first look at model size. However, the real factors affecting construction efficiency are the combined matching of eccentric moment, frequency, excitation force, extraction force, clamps and power packs.

Understanding these parameters helps contractors select equipment more accurately.
Eccentric moment can be understood as a basic parameter for the equipment's vibration energy generation. The larger the eccentric moment, the stronger the vibration output that can be formed at a suitable rotational speed. Excitation force is an important indicator of the vibratory hammer's action on the pile body and is directly related to whether the equipment can drive or extract the pile smoothly.

Taking hydraulic vibratory hammer parameters as examples, the AT-230 has an eccentric moment of 110 kgm and a maximum excitation force of 2,300 kN. The AT-230B has an eccentric moment of 76 kgm and a maximum excitation force of 2,760 kN. The AT-300 has an eccentric moment of 133 kgm and a maximum excitation force of 3,076 kN. The AT-400 has an eccentric moment of 200 kgm and a maximum excitation force of 4,300 kN. The AT-500 has an eccentric moment of 250 kgm and a maximum excitation force of up to 5,400 kN.

Equipment selection cannot be based on a single parameter. Long steel pipe piles, large-diameter piles, deep-water cofferdams and terminal foundation construction usually require higher excitation force, stronger clamps and more stable power packs. Urban steel sheet piles, river support and temporary retaining works place more emphasis on equipment flexibility, transfer convenience and clamp compatibility.

Therefore, the value of a hydraulic vibratory hammer is not simply bigger parameters, but the match between parameters and working conditions. Through combinations of vibratory hammer bodies, clamps, power packs and construction solutions, Anteng provides more suitable equipment choices for different pile types and projects, helping customers improve pile sinking efficiency, reduce waiting time and lower overall construction costs.