This spring-Loaded, prestressed, box with a self-frequency close to 3 Hz, is made up of the following elements:

Fabrication:

- 2 high resistance springs, Class C1 according to NFA 47-301, protected by a black epoxy paint baked.

- 2 mechanically welded parts, zinc coated (bi-chromating treatment)

- 2 M12 threaded rods, zinc coated, providing prestressing, equipped with sets of removable safety inserts, to dismantle after installation

- 2 neoprene rubber plates to avoid fixing and improving high frequency of structure-borne sound filtering

Options:

- Galvanized mechanical parts and stainless steel screws for outdoor mounting.

- "V": lower sole type "VIBRAFRAIN" for soundproofing applications (add 7mm to the height of the supports).

Applications :

- This product is dedicated to the elastic suspension of rotating machines installed on a floating slab in concrete

- Prestressing allows for leveling adjustments without the need to lift the entire device with a crane or jacks. It is also used successfully for supporting large pipes.