Helvét-Farm

Helvét-Farm is a key player in Hungary’s agricultural sector, specialising in high-efficiency grain processing. Located in Orosháza, the facility recently installed a high-performance destoner machine.

The room housing the machine was constructed using a lightweight steel structure, raising concerns about potential vibration issues.
In April 2024, CDM Stravitec was contacted by the project’s structural engineer to assist in designing a vibration isolation solution. A detailed modal analysis revealed that the machine’s built-in anti-vibration mounts had a natural frequency dangerously close to that of the supporting structure, increasing the risk of resonance and reduced isolation performance.

To resolve this, CDM Stravitec supplied its Stravimech Bearing-Air system, a highly effective low-frequency vibration isolation solution designed for heavy industrial machinery. Installed between the destoner and the structure, the system introduced an additional isolation layer with a much lower natural frequency, successfully decoupling the two systems.

During the design review, a potential resonance between the destoner machine’s elastomer mounts and the lightweight steel structure was identified- a risk not noted in the project documents. The similar natural frequencies threatened isolation performance and operational stability.

Key objectives:

• Isolate the machine operating at ~16 Hz
• Prevent excessive vibration and long-term wear
• Avoid frequency overlap between machine mounts and building structure

To meet these requirements, a solution was developed using the Stravimech Bearing-Air-6”x2 system, featuring two 6-inch (152 mm) diameter air bellows per unit. The system was designed to operate at 4 bar pressure, providing a natural frequency of 2.3 Hz and a working height of 170 mm (6-11/16”).

Given that air mounts provide minimal inherent lateral stiffness, custom lateral restraints were also designed for this project using Stravimech Bearing-P elements.

The system was successfully installed and commissioned in October 2024. Since then, it has performed as expected, eliminating any resonance issues and operating to the full satisfaction of the client and project stakeholders.

 Download PDF