Seismic isolation and vibration control
for buildings and other large structures
Seismic isolation for key equipment
and other vital assets

Basic Guide to SeismicIsolation and Vibration
Control
Keeping your assets safe and secure,
now and in the future.

Amenit y Creation Engineering

Headquarters: 3-11-6 Nishi-Gotanda, Shinagawa-ku
Tokyo, Japan 141-8503
TEL: +81 (3) 5434 0300 FAX: +81 (3) 5434 0305

http://www.thk.com/CATALOG

No.A-14E 201310000 ©THK CO., LTD. Printed in Japan

Seismic Isolation Systems

To safeguard the most valuable assets,
deploy the most advanced technology.
The LM Guide, originally developed by THK and now regarded as
the de facto worldwide standard for linear motion in many key industries, including machine tools, semiconductor manufacturing
equipment, and industrial robots. The THK Ball Screw, recognizedaround the world for high reliability, thanks to its long record of solid
performance in a host of industrial uses. These two versatile components provide the core technology for THK's seismic isolationand vibration control devices.

A technology devoted entirely to safety and security

World leaders:
The THK LM Guide and Ball Screw.
This seminal technology lies at theheart of THK's seismic isolationand vibration control devices.
Ball Screw

LM Guide
The LM Guide is incorporated into THK's Cross LM Guide Model CLB,
which provides seismic isolation for buildings and other large structures,
as well as the Seismic Isolation Table Model TSD and Seismic Isolation
Module Model TGS, which protect key equipment and other vital assets.

The Ball Screw, which deftly converts rotary motion into linear motion
and linear motion into rotary motion, is incorporated into the Rotary
Damping Tube Model RDT and Inertial Rotary Damping Tube Model iRDT.

Rotary Damping Tubes (vibration control)TGS Seismic Isolation Module

Cross LM Guide Model CLB

TSD Seismic Isolation Table

Rotary Damping Tube (seismic isolation)

Ball Screw shaft grinder

LM Guide Rail grinding process (1)Testing performance

1

LM Guide Rail grinding process (2)iRDTInertial Rotary Damping Tubes

Large-scale multitasking Machine

Testing Rotary Damping Tubes
iRDT2

Seismic Isolation Systems
A technology devoted entirely to safety and security

BankOffice building

University building

General Hospital

Daigokuden, a reconstructed Inperial Audience Hall of State in Nara

Art gallery

Government building

Seismic isolation systems
for buildings

Supports the building andprotects it, by deflecting
earthquake vibrations.
The Cross LM Guide Model CLB employs LM Guides to isolate
seismic motion and smoothly direct it away from the building,while the Rotary Damping Tube utilizes a Ball Screw to absorb
seismic energy. THK systems can handle bearing loads from11 to 3,120 tons and damping loads from 0.5 to 140 tons, enabling them to accommodate everything from residential homesto high-rise buildings.
3Cross LM Guide Model CLB

Seismic isolation systems
for houses deflect earthquakevibrations.
Rotary Damping Tube
Model RDT

Lightweight one-story wood-frame house4

Seismic Isolation Systems
A technology entirely devoted tosafety and security

Rotary Damping Tube
Model RDT

The Ball Screw converts seismic vibrations into rolling motion, and shear
resistance provided by the viscousmaterial inside the tube enables it toabsorb the vibrations.

Office building

Inertial Rotary Damping
Tube Model iRDTThe tube is equipped with a damper
combining the mass effect of rotary
inertia with the damping effect of shear
resistance supplied by viscous matter,as well as a revolving slider mechanism that limits axial force, preventing
the total force exerted from becoming
excessive. Compared to conventional damping devices, fewer tubes areneeded to achieve the same effect.
The iRDT is an effective countermeasure against long-period vibrations affecting high-rise buildings. It can beinstalled in existing buildings as well
as newly built structures.

Rotary Damping Tube

Vibration control systems
for buildings

Protecting buildings byabsorbing seismic waves

Office building

Rotary Damping Tube
Model RDTThe Rotary Damping Tube Model RDT and Inertial Rotary
Damping Tube Model iRDT employ a Ball Screw to absorb theseismic energy transmitted to buildings, inhibiting shaking on
the upper floors. THK's vibration control systems can protect
everything from houses to high-rise buildings.

Inertial Rotary Damping Tube
Model iRDT

5Factory

Rotary Damping Tube6

Seismic Isolation Systems
A technology entirely devoted to safety and security

Seismic Isolation Module Model TGS

Seismic Isolation Module
Model TGSServer racks resting atop TGS modules installed in data center

Optimal seismic isolation
Seismic response analysis and shaking test results
30-30

TGS modules installed in data center

Seismic isolation for machines
and other vital devices

Securing key equipment toensure business continuity-20-1030(cm)

2020

10

1000

102030-30-20-1000-10-10-20-20-30-30

Seismic response analysis(cm)

102030

Shaking test

Seismic response analysis and the shaking test produced nearly identical results.
Seismic wave used: Taft 1952 (EW), generated at 4:52 a.m., July 21, 1952. Magnitude 7.7.
Standardized wave, based on 50cm per sec.

The versatile TGS offers a broad range of seismic isolation options. Use it to isolate theentire floor of a data center, server room, or operations center, or simply to secure thearea under a manufacturing machine, measuring instrument, or other key equipment.
• TGS modules can be configured to accommodate loads of almost any size or shape.
• Aided by seismic response analysis, THK can offer guidance on the optimal installation location for the floor and area to be protected.
• TGS modules can handle even heavy loads, up to a maximum 3,000 kgf
per square meter.
Note: The above remarks apply to evenly distributed loads. When dealing
with a more concentrated load, consult THK in advance.

7

Seismic Isolation Module Model TGS
Semiconductor manufacturing
device, weight 2 tons

Seismic Isolation Module Model TGS
Carl Zeiss-made coordinate measuring Machine
atop TGS module configuration installedat Tokyo Seimitsu Co., Ltd.

8

Seismic Isolation Systems
A technology entirely devoted to safety and security

Seismic Isolation Table Model TSD

Dialysis machines

Server computers atop TSD tables set up in data center

Easy-setup seismic isolation
for machines and other assets

Simple setup, effective
protection: Keep vital
assets safe from earthquakes
TSD tables protect smaller-scale server racks and measuring devices as well as statues religious
sculptures, and other works of art. Multiples tables can be connected in almost any configuration,and setup is simple: just place the tables on the floor.
• No special construction is required—tables can simply be placed on the floor.
• Almost any configuration can be expanded by connecting more tables.
• Accommodates loads from 30 to 1,200kgf.

9Server

Measuring instrument

Measuring instrument

Seismic Isolation
Table Model TSD

Artwork

Display at art gallery

Buddhist sculpture(designated a nationaltreasure of Japan)

Buddhist sculpture(designated a nationaltreasure of Japan)

10