Seismic isolation is a technology used to prevent ground energy from being transmitted directly to a building during an earthquake. This is achieved by inserting a seismic isolation device between the ground and the building to separate and insulate them. Isolators or dampers are installed between the ground and the building to prevent ground shaking from being transmitted to the building. Because the ground and building are insulated, seismic isolation can greatly reduce shaking compared to other construction methods, making it very effective against large earthquakes.

• Places that cannot be tightened strongly due to the use of anti-vibration rubber.
• Places that were fastened with general double nuts.

• Double nut tightening, which is difficult to install, is no longer necessary.
• Unlike double nuts, it is now possible to perform proper fastening with simple construction in places where strong tightening is not possible.
• We were able to reduce the total cost of construction and maintenance.