Getzner presents earthquake-proof machine bearing

A vibration-damping machine bearing, explicitly developed technical systems in wind-exposed locations and earthquake regions, is a new innovation. The Isotop DZE 3D vibration damper absorbs load influences such as earthquake shocks and external forces, like those generated during braking, remaining completely unscathed. It also serves to securely anchor the equipment in place. “Strong winds often exert alternating lateral pressure, for example on a heating, ventilation or air conditioning (HVAC) system on the roof. The Isotop DZE 3D bearing effectively offsets this,” explains Dominik Riedel, Technical Manager at Getzner Spring Solutions. “The machine bearing successfully compensates for strong lateral displacements and has even been proven to withstand earthquakes without incurring any damage. This plays an important role in protecting the machinery or equipment being borne. Its properties also make it ideal for use in the transport sector.”

Load capacity far beyond standard limits
The vibration damper’s high load-bearing capacity has also been confirmed by independent experts. The recognised testing institute for seismic requirements EUCENTRE (European Centre for Training and Research in Earthquake Engineering) in Pavia, Italy, carried out a series of earthquake simulations. After the Isotop DZE 3D bearing had survived the load limit of the earthquake simulator unscathed, further inspections did not reveal any visible damage or significant deformation whatsoever. Getzner has also tested the elements up to plastic deformation in its own laboratory in order to be able to offer maximum safety. “With this Isotop product, the anchored objects can move sideways to an unprecedented extent without sustaining damage. The bearing always returns to its original position,” emphasises Rico Link, Project Engineer at Getzner Spring Solutions GmbH.

Patented chamber design
The high level of vibration protection is achieved thanks to the innovative design. Trademarked materials developed by Getzner which have been proven in the field for decades form the basis of the new product. A patented chamber design provides space for Sylomer, Sylodyn and Sylodamp inserts, effectively preventing the transmission of vibrations. The internal structure of the Isotop DZE 3D allows the threaded rod, with which the machine bearing is bolted to the object to be protected, to be set at a considerable angle: an inclination of up to 35 degrees is possible without creating sound bridges. “Even a larger inclination is not a problem. Although the vibration-insulating effect is then no longer present, the machine bearing is not damaged,” says Dominik Riedel. This is because Getzner has completely dispensed with bolt or rivet connections, which could break under load. What’s more, the housing is also made of solid die-cast stainless steel.

“Isotop DZE 3D protects elastically mounted machinery perfectly against external influences such as wind or earthquakes. The bearing can easily absorb high horizontal accelerations,” emphasises Dominik Riedel. Isotop DZE 3D is available as standard in four types with different load limits, from 200 kg to 1,200 kg per element, and is available for immediate delivery.

www.getzner.com