(March 31, 2011)

THK Seismic isolation systems support buildings

We have combined multiple technologies to produce reliable support systems.

THK’s seismic isolation systems incorporate our core products, including LM Guides. These systems have been developed as applications of our products and reflect THK reliability, experience, creativity, and technological expertise. They have our unwavering confidence.

Linear guide CLB
The linear guide CLB is a seismic isolation system that accommodatesa heavy sustained load with extremely low frictional force, since the balls in the LM guide rotate on raceways cut into the LM rail while circulating through the block. Since the LM block is equipped with an LM rail and balls, the bearings can also accept a pulling load.



Viscous damping system RDT
This system absorbs earthquake force transmitted to the building with the resistance offered by a viscous substance. The viscous damping system RDT has a structure in which linear motion is converted via a ball screw nut into rotary motion. A shearing force is applied to the viscous substance between the inner tube, which connects to the nut, and a fixed outer tube.



Recovery system
When an earthquake occurs, houses with isolated bases can freely move away from their foundations in any horizontal direction. Therefore, they need to return to their original positions when the earthquake ends. For that purpose they are equipped with this recovery system, which incorporates laminated rubber and other materials.



Preventing transmission of earthquake force

THK Isolation Table, model TSD
In an actual earthquake, even if the building is not damaged, people inside can be injured in secondary accidents. Valuable indoor property can fall over and be destroyed. To prevent such destruction, it is vital to consider how to prevent the indoor space from "quaking." THK has utilized its knowledge of residential isolation technology to create indoor isolation measures.



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