Customized orders provide the performance you need for your application

Seismic Isolation Module Model TGS
Ensure business continuity when earthquakes strike

Peace of mind is right here.

Laminated rubber(restoring element and supporting element)
Viscous Damping System RDT(damping element)

Compact seismic isolation for buildings

Seismic Isolation Module Model TGS:The Culmination of THK’s Seismic Isolation Technologies
Utilizing our vast experience in seismic isolation for all kinds of buildings from single-family homes toskyscrapers, the Seismic Isolation Module Model TGS condenses the core technologies of supporting,damping, and restoring that are essential to seismic isolation into a compact size.
Combining these compact modules allows for sectional seismic isolation suited to your application,
including everything from single units for production equipment and measurement machines to total floor
coverage for data centers, server rooms, and operation centers.

Linear Re-Circulating Guide CLB(supporting element)
LM Guide

Seismic isolation system installed under THK headquarters building

LM Guide (support)

Tension spring(position-restoring)

Model TGS interior

Disk damper (damping)

LM Guide combination

Compact Seismic Isolation

Perpendicular LM Guide Units

The Seismic Isolation Module Model TGS condenses thesupporting, restoring, and damping functions essential toseismic isolation into a compact form.

Perpendicular LM Guide units provide smooth
movement in every direction for a range of 360°.

Core LM Guide Component Is Used in Industrial Machinery Worldwide
Forming the heart of the seismic isolation module, the LM Guide uses rolling motion to achieve
linear motion while reducing frictional resistance to generate smooth movement that deflects
seismic tremors. Since its development by THK in 1972, the LM Guide has spurred dramatic
improvements in the performance of mechatronic equipment, and it is now the de facto
standard for industrial equipment and machine tools around the world.

DitireconofmotionLM blockBall (steel bearing)

LM railWe offer the optimal seismic isolation for your application,from single unit servers to total floor coverage for operation centers.
We have a varied lineup of seismic isolation systems in different sizes. Choose the optimal system basedon the fundamental period that would be expected for the building structure, the application (equipmentlocated on the floor), and where it will be installed.

Guidelines for Selecting a
THK Seismic Isolation SystemFloor

Seismic Isolation Module Model TGS

Floor seismic isolation

Large equipment
3D measuring instruments,
semiconductor manufacturing
equipment, etc.

TGS6

Stroke：±315 mm

TGS5

Measuring instruments,
servers, etc.

Application

Mid-size equipment

Seismic Isolation Table Model TSD

Stroke：±250 mm

TGS4

Stroke：±220 mm

Seismic Isolation Table
Model VIT for Display Cases

Small equipment
Microscopes,
works of art, etc.

NEWLoaded weightLight3HeavyOur original mechanisms handle even the typesof tremors seen from recent major earthquakes.
During the 2011 Tohoku earthquake and tsunami(Great East Japan Earthquake) and the 2016
Kumamoto Earthquakes, tremors that exceed thespeciﬁcations (displacement) of conventional seismic
isolation units were recorded, and tremors of the samekind are expected for the Nankai Trough earthquakethat is predicted to occur in the future.
THK has combined the LM Guide, which has a proventrack record in industrial machinery, with a damper
using an original mechanism to develop the Seismic
Isolation Module Model TGS.
With a combined high-displacement module anddamper, we oﬀer the optimal customized seismic
isolation performance.

4Installation Examples: Flooring
道路管制センター（施工面積281㎡）

床免震範囲

Traffic control center (281 m2 surface)Installation process

The seismic isolation modules can be installed directly onto the ﬂoor, so steel frames to cover the entirety of the ﬂoor
like those used with conventional seismic isolation devices for ﬂooring are unnecessary.

Summary Module sizes are oﬀered in the same speciﬁcations (450 mm2, 500 mm2, and 600 mm2) as raised access ﬂooring (raisedﬂooring), so construction is simple. Moreover, the top surface of the modules are a planar construction, so wiring andpiping can be run freely between the raised access ﬂooring.

5Underfloor wiring

6

Installation Examples: Servers

Toyohashi Cable Network inc: Data center

Installation of Seismic Isolation Module Model TGS

Underfloor wiring

Because the seismic isolation module is thin, a large amount of space is available between the raised access ﬂooring

Summary(raised ﬂooring) and the bottom of the ﬂooring, which easily secures space for wiring and piping.
In addition, steel frames and raised access ﬂooring can be used together, just the same as with conventional installation
methods for server racks.

7

Saiseikai Kumamoto Hospital: Server rackInstallation process

From base frame installation to upper plate installation

The seismic isolation modules can be customized with added steel frame bases or upper

Summaryplates depending on the wiring method (top surface wiring or underﬂoor wiring),
installation location, and application. (The pictures show examples of access panels forunderﬂoor wiring.)

8Installation Examples: Precision Equipment
3D Measuring Instruments, Semiconductor Manufacturing Equipment, and Analyzers

Mass: 2,700 kg

Mass 3,085 kg

TOKYO SEIMITSU CO., LTD., Carl Zeiss Series

Mitutoyo Corporation

Installation Process

Mass: 7,400 kg

Leitz Series

Because the seismic isolation module has high rigidity, even precision

Summary equipment with signiﬁcant weight can be loaded onto it.
Also, because it is thin, it doesnʼt impact the operability of the equipment.

9Kosaka Laboratory Ltd.: Automatic roundness
and cylindricity measurement equipment

Semiconductor manufacturingequipment (diffusion furnace)

Thermo Fisher Scientific Inc.: High resolution ICP mass spectrometry
10Installation Examples: Medical and Clinical Diagnostic Equipment

Oita University Hospital: Biochemistry analyzer

Oita University Hospital: Blood testing equipment

Oita University Hospital: Biochemistry analyzer

Summary11

The modules can be installed in the optimal location for the loaded object,and heavy automatic analyzing machines can even be loaded in groups.

Nippon Becton Dickinson Company, Ltd.: Blood culture system

After floor installation

Before floor installation

Nuclear power research facility

Summary

The seismic isolation modules can be linked freely to accommodate theshape of the room theyʼre installed in.

12Installation Examples: Cultural Assets and Works of Art

Seismic isolation module under the Pietà

Photo by Roberto Mascaroni

Michelangelo’s Rondanini Pietà (Sforza Castle in Milan)

Toshodaiji Temple
Whether it will be used for display cases, inside display cases, or for individual

Summary objects, the optimal seismic isolation module can be installed for eachapplication.

13

Prior to loading
the display cases

Nara National Museum

Important cultural asset: Eleven-headed Kannon (Ryuhoji Temple)

14

Seismic Isolation Module Model TGS features
Seismic Isolation in a Compact Package
The TGS provides the support, restoring, and damping functions required for effective seismic isolation, delivered ina compact module.

LM Guide (support)

Tension spring(position-restoring)
Disk damper (damping)
Model TGS interior

Benefits from the LM Guide
Because the balls limit the movement of the rail and blocks in the LM Guide to four directions (up, down, left, andright), loads from any direction are received evenly, and the device will not separate even if a load exceeds themaximum displacement.
Ball Contact StructureLoadLM block

Load×13
LoadLoadBall (steel bearing)
LM rail

Example cross-sectional
structure of an LM Guide

Flat surface(point contact)

Round groove(surface contact)

Because the LM Guide has balls that roll through the grooves in the rail, it is highly stable and can withstand up toapproximately 13 times the load that conventional flat surface contact types can. The system moves smoothly andseismic isolation performance is unaffected even if the loaded weight changes or objects are placed off-center.
Before an earthquake

Even with an eccentric load...

15During an earthquake... it slides smoothly.

No wobbling or turning!

Structural Benefits
At 100 mm to 112 mm high, the device is low and compact.
The module is die-cast aluminum, making it lightweight.
Compatible with a variety of devices, with a load capacity of 750 kgf/m2 to 3000 kgf/m2.

TGS unit height
100 mm to 112 mm

Can be linked freely according to the shape of the object to be loaded, making construction simple.
The minimum configuration is 2×2 modules, and modules can be added with no upper limit.
Displacement and floating due to earthquakes are prevented because the module is secured to the floor using
anchor bolts.

Fixed to floor with anchors
Configuration example: 2×9 modules

Because the upper surface of the module is a flat plane,
the loaded object can be fastened to it, and space forwires and air conditioning can be secured.

Proposals for the Optimal Seismic Isolation Performance
For the Seismic Isolation Module Model TGS, we canuse earthquake response analysis to propose theoptimal seismic isolation performance (equipmenttuning) for you based on criteria such as installation
location, weight of the loaded object, and expectedearthquake motion.
(For details, refer to p.19)

16

Seismic Isolation Module Model TGS Product Specifications
Module Structure
Frame
Lightweight die-cast aluminum.

Tension spring
Returns frame moved by tremors to original position.

LM Guide
Assembled in a cross shape, the LM Guide units smoothly move
forward, backward, and side-to-side, sliding along with the tremorsof earthquakes.

Pulley and timing belt
Operating together with the seismic isolation module, the pulley isrotated by the timing belt.

Rotary viscous damper

The Seismic Isolation Module
Model TGS is patented.

The damper is built into the pulley, and it attenuates the movement ofthe seismic isolation module by damping the rotation of the pulley.

Close-upof outlined area

Module Types
Support module

Linking module● Module to support weight.

● Module to connect support modules.

● Adjusts restoring force and damping force dependingon loaded object weight and installation location.

Module Configuration Example
The minimum configuration for the Seismic Isolation Module Model TGS is 2×2 modules, and there is no maximum limit.
Linking module

2 modules

2 modulesSupport module

Support module

2 modules

2 modules
Reference: Permissible Load When Using the Minimum 2×2 Module Configuration
Module combination

Module classification
Support module

4 units

Linking module
Maximum permissible capacity

173000 kgf

3 units

2 units

1 unit1 unit2 units

3 units

2250 kgf

1500 kgf

750 kgf

Module Dimensions

TGS4

TGS5

TGS6600

600

450

Module weight1500

100

500

450

Approx. 20 kg

Permissible load

112

100Approx. 24 kg

Approx. 35 kg

750 kgf

1, 2Maximum
displacement(45° direction)±220 mm±250 mm±315 mm

Maximum
displacement(0°, 90° direction)±311 mm±354 mm±445 mm

1 The weight and permissible load values are the values for one support module.
2 The Model TGS cannot be used as a single module.

Range of Motion

The minimum configuration unit is a 2×2 configuration, including at least one support module.

During an earthquake, TGS modules move within therange indicated in the diagram to the left. It istherefore necessary to ensure enough space isavailable in the planned area of usage. Also, be sure
not to leave any obstructions within the stroke range.

18TestSeismic Isolation Module Model TGS Performance Validation Testing

Overview
Seismic isolation performance validation testing is conducted by placing two server racks on the Seismic Isolation
Module Model TGS and simultaneously applying tremors to the three axes.The test results as well as the previous
response analysis* are both validated.
* The performance can be estimated using time history response analysis for the Seismic Isolation Module Model TGS, just like with designs
for buildings with seismic isolation.

Test Date

Test Location

October 4, 2016

Urban Renaissance Agency (UR) Technology Research Institute Vibration Laboratory

Test Object SpecificationsTest Wave

• Seismic Isolation Module Model TGS6 dimensions:

100% of 2016 Kumamoto

3000 mm × 1800 mm, with maximum displacement of ±315 mm

Earthquake response measured at• Mounted load: 1000 kgf (500 kgf × 2 racks)

KiK-net Mashiki

Test Data
X-Axis Direction
1200

900

Input acceleration

Acceleration (Gal)600

Response acceleration

158

300

00510152025Time (s)30-300-600-900-1170

-1200

1800

Y-Axis Direction

1500

Input acceleration

1200

Response acceleration

Acceleration (Gal)

900
600

171

300
0-300

0510152025Time (s)30-600
-900
-1200
-1500
-1800-1698

Information used for the vibration testing was provided by the National Research Institute for Earth Science and Disaster Prevention.

19Analysis
The test results on the left page (p. 19) are virtually identical to the previous response analysis results,
and they validate that the test and analysis results match.
Analysis
Test

X-Axis Direction
200

Acceleration (Gal)

158

150

1000051015202530
Time (s)-100-200

Analysis
Test

Y-Axis Direction
200

Acceleration (Gal)171
1000051015202530Time (s)-100-156-200

Maximum displacement of TGS6Response Displacement-300-200-100(mm)300(mm)

300

200

200

100

1000100200(mm)300-100-300-200-100

0100200(mm)

300

-100

253 , -137
238 , -170
-200-200

-300

-300

Time history response analysis results

Validation
Results

Vibration test results

The optimal seismic isolation performance tuning ispossible using conditions such as installation location,
loaded object, and predicted seismic motion.
20

Model TGS Implementation Process
Begin considerationof seismic isolation
Customer

1

Seismic isolation
target specifications

2

Seismic isolation
arrangement (see below)

THK

Weight, shape,
footprint,
installation level, etc.
Consideration of device arrangement
General model number calculations
Reference drawings
Rough estimate of costs*When performing analysis

3

Building specifications
Customer and THK Confirmation

4 Predicted seismic motion
5

Seismic isolation
performance validation(Time history response analysis)
Model confirmation

Approval*If contracted for construction

Site confirmation and measurements
Submit delivery specifications
Submit delivery specifications drawing

6 On-site survey
7

Delivery specifications
and drawing

Approval

8 Fabrication

Work contract or sale of materials*If contracted for construction

9Construction or supervision

Construction

Standard Construction Patterns

2 Raised flooring

1 OA flooring
Seismic isolation
system height

Steel plate (fastened with bolts)

Stroke range
Base material

Raised flooring

Expansion joint widthA

Stroke range

Unevenness correction(self-leveling construction or liner-adjusted)

After-construction anchor

21

A details
Unevenness correction (self-leveling construction or liner-adjusted)

Stroke range

When Performing Analysis

3 Building specifications
4th level
4F
3 rd l e v e l

1 Seismic
isolation target

5 Seismicisolation

TGSspecifications

2nd level2 Seismicisolation

performance
validation

3 F Analysis

Modelingarrangement

2F

1st level

Max. response acceleration
Max. response displacement

Acceleration (cm/s/s)

1F

4 Predictedseismic motion

1000

Acceleration
N-S (peak: 827.6 cm/s/s)

0-100010203040

Time (s)3 Building Specifications

4 Predicted Seismic Motion (a unless otherwise specified)

Layer shear force and inter-story
1. Building structure
Q (kN) displacement curve graph for each floor
Steel frame
7,000
construction,
RC construction, etc. 6,000a) Standard waves (observed waves)

2To serve as representative observed seismic waves in the past,waves whose maximum velocity amplitude is standardized to 50
cm/s are set as extremely rare seismic waves. 1940 El Centro
NS, 1952 Taft EW, 1968 Hachinohe NS, etc.

3b) Regulated waves

12. Building weight

5,000

3. Skeleton curveof the building

4,000
3,000
4

2,000
1, 2, and 3 are fromthe structure calculation
for the building.

1,000
00

102030405060 70σ (ｍｍ)

These mock seismic waves are created taking properconsideration of the amplification from construction subsurface
layers, with the acceleration response spectrum from an isolated
engineering bedrock, as specified in the Ministry ofConstruction’s Notification No. 1461.

c) Site waves
These are mock seismic waves for the construction site, basedon active fault distribution, fault damage models, past seismic
activity, and bedrock structure surrounding the construction site.
*If the floor response (historical acceleration data) from when the building was designed is available, 3 and 4 are not needed.

3 Base frame installation (top)4 Base frame installation (bottom)
Expansion joint width

Stroke range

Stroke range

Height from floor

Seismic isolation
system height

Steel base frame

Stroke range

Steel base frame

Unevenness correction (self-leveling construction or liner-adjusted)

22

Seismic Isolation Module Model TGS
Precautions on Use● Injuries may occur if people enter or objects are placed within the seismic isolation table’s range of motion (themaximum displacement given in the catalog) and the seismic isolation table activates during an earthquake.
● This product is designed to attenuate horizontal seismic motion; it is not intended to be effective against verticalseismic motion. This product does not guarantee that the object will not move or topple.
● In the event of seismic motion stronger than this product is designed to absorb, the modules can be expected tostrike the stopper, exerting an impact on any object loaded onto them.
● LM Guide and "Caged Ball" are registered trademarks of THK CO., LTD.
● Discrepancies may exist between photographic representations of products and the products themselves.
● Modifications may be made, without prior notice, to a product's appearance and specifications; please consult THK before using
the product.
● Great care has been taken in the preparation of this brochure. Nevertheless, THK is not liable for damages arising fromtypographical errors or omissions.
● THK observes a policy of full compliance with the Foreign Exchange and Foreign Trade Act and other relevant laws andregulations in relation to the export of THK products and technology and to export-related sales activities. Please consult THK inadvance concerning the export of individual products.
All rights reservedContact us with technical inquiries about seismic isolation+81-3-5730-3866 ACE DivisionSee our seismic isolation website for more details.

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