Seismic Isolators

Seismic isolators can be spring or rubber type and they eliminate the need for snubbers by utilising ductile steel housings that provide all directional restraint. Based on the spring layout isolators with stud or top plate are the most common versions. When dealing with large equipment like chillers, cooling towers or generators seismic isolators with top plate are used. These isolators provide much better vibration isolation and can handle very heavy weights. They are also better suited to resist larger seismic forces. Smaller equipment such as pumps and fans can be installed with isolators that have a stud. These isolators can provide good vibration isolation but their load capacity is limed to the capability of single spring. Seismic rubber isolators are required for high frequency vibration isolation applications or when equipment are installed in areas that are not sensitive to noise and vibration.