Simple roller bearing
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Simple roller bearing or Earthquake-protective building buffer [3] is a simplified version of a base isolation device called earthquake protector which is intended for protection of various building and non-building structures against potentially damaging lateral impacts of strong earthquakes.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Earthquake-Protective_Building_Buffer-exploded.png/220px-Earthquake-Protective_Building_Buffer-exploded.png)
![](http://upload.wikimedia.org/wikiversity/en/thumb/8/80/Simple_rollers_BI.jpg/270px-Simple_rollers_BI.jpg)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Earthquake-Protective_Building_Buffer.jpg/220px-Earthquake-Protective_Building_Buffer.jpg)
The metallic bearing support shown on the right may be adapted, with certain precautions, as a seismic isolator to skyscrapers and buildings on soft ground. Recently, it has been employed for a housing complex (17 stories) in Tokyo, Japan.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)
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