Like most good ideas the development of the iseki product range arose from the identification of a need. In the 70's sewerage network in Japanese towns and cities were few and far between.The need was therefore to install sewerage infrastructure whilst minimizing disruption to daily life in one of the world's most densely populated countries,to meet this end trenches solution were sought for installation of the networks.

​Mr. Yoshihito Kurose the founder of Iseki Polytech Inc. decide to study solutions to the unique problems of installing sewage infrastructure in the crowded Japanese
urban configurations. He identified that the equipment which was to be designed should have the widest range of application and it had to be able to cope with
wide-ranging soil conditions.He chose a slurry system as the basis point  of
development for this reason.

​What is Unclemole

We are selling many Iseki pipe jacking machines including Unclemole all over the world for installation of various underground pipes/cables in underground is growing due to the rapid urban development in recent years. This department promotes laying pipeline for sewer, water and cable to establish a safe and affluent society.

1971 Company established in Japan

1972 Introduced its first slurry shield the MEPCB a “manually” operated earth pressure counter-balance shield with a sophisticated automatic counterbalance head, capable of coping with highly unstable and sensitive water logged ground.


-写真- mechanical Earth Pressure Counter-balance Bentonite Shield(MEPCB)


1979 Iseki enjoyed the challenge of doing the impossible and defying experts who said it could not be done. Launch of the “remotely” operated Telemole revolutionzed Microtunneling.


1981 The tele Crunchingmole(TCM)marked the next step forward,  introducing a machine with an on-line “off-set” rotary
crusher for processing cobbles and boulders.


=写真= TCM Crunchingmole


1981 European branch established in the United Kingdom    


1983 First “Pipe Roof” temporary works structure installed in Singapore, and to date Iseki have installed over 77km of microtunnelled Pipe Roof structures on 32projects, possibly
marking Iseki as the world’s most experienced Pipe Roof Constructor.


1984 The radical Unclemole TCC(Tele Cone Crusher)with a unique epicyclical cone crusher(combined bi-deirectional and eccentric radial movement) came to the market. A machine with a single cutter head that was capable of dealing with all soft ground conditions(Clays/Silts/Sands/Gravels)along with boulders
up to 30% of the machine size and soft rock.Soon to be recognized as the most versatile MTBM and with subsequent variants(TCZ, TCZ-M, Pipe-replacer, TCP & TCL) is probably the world’s most popular slurry MTBM.


写真と 図

1984 United States branch founded


 1988 Mr. Kurose received Distinguished Honorary Professor Award from University of Alabama for his contribution to economic development between the United State and Japan. Yoshihiro Kurose Scholarship established for students majoring in international business


1994 Unclemole Super TCS range unveiled widening operational ground conditions to include hard rock ≦200MPa unconfined compressive strength and boulders>30% of the machine size whist maintaining the unique epicyclical crusher from the proven Unclemole TCC MTBM


写真 Unclemole Super TCS≦1350id


1994 Iseki leads the way again by producing EPB machines with mud-pumping spoil removal/transfer systems for a major first time sewerage project in Bangkok

写真  Iseki EPB


Euro Iseki Overseas Thailand, JV company goes on to install over 81km of microtunnelled lines on 3 different projects


1995 Euro Iseki in the UK presented with the much coveted Queens Award for Export Achievement.


2000 Unclemole TCV inaugurated, system for direct trenchless installation of PCV pipe from 200mm ID to 500mm ID


2005 TCTS Shuttlemole introduced, customized Unclemole Super with retractable peripheral cutters facilitating MTBM recover through the installed casing pipe. Specifically developed for the construction of blind-hole pipe roof structures.


写真  Shuttlemole TCTS


2007 New Unclemole Super TCS which has a built in facility for man access to the cutter head through the machine, this allows cutting discs to be changed where long drives are undertaken.


2010 The largest diameter(4310mmO.D) TCS built for the pipe jacking project of sixty(60)meter deep drainage in Saudi Arabia.



2012 Iseki Microtunnelling in the UK complete the UK’s most technically challenging project to date

・980 metre 1.8 metre diameter long sea outfall.

・40 metre depth drive shaft

・300 metres installed on a 1 in 10 declined drive entering into an 

Inspection shaft on a 600 metre vertical radius curve

・680 metres advanced under the English Channel on a 1 in 100 declined drive.

・Underwater seabed MTBM recovery


Plan of project

Section of project


・System deployed with Fiber Optic data transfer / control cables, first time use on a microtunnelling System.

2013 Iseki Microtunnelling in the UK develop and produce the first “Bolt On” mixed face cutter head for the Unclemole TCC machine. Extending the operational range to include medium strength rock


写真×2 Unclemole TCC cutter head ,Unclemole TCC-R Cutter head 



2015 Iseki have installed over 77,764km of  microtunnelled Pipe Roof structure on 32 projects as of today.

The main benefits of the Iseki Pipe Roofing Method are:

★Total security against settlement and ground movement.

★Cost saving over alternative methods.

★Flexibility of design.


Installed pipes are linked together to make secure structure , which is then supported excavated , and finally lined to create the finished tunnel.


2016 ISEKI TCTS Shuttlemole won an award at the China No-dig conference in Beijing 

2017 ISEKI now offer you “Segmental Slurry Tunnell Boringmachine made in Japan and a back up equipment made in Korea.





ISEKI develop and produce “New TCS” machine can be used to standard soil, mixed soil, and rock. Iseki offers the appropriate solution for all geological challenges.





Iseki has pioneered the introduction and partnership of Microtunnelling Equipment for over four decades, also with approaching 2,500 units produced they are probably the world’s
most popular slurry MTBM


Iseki work in close partnership with Clients and Suppliers provide engineered solutions for infrastructure installations utilising Microtunnelling Technology.

As a manufacture and operator of rental equipment Iseki have gained a detailed appreciation of the capabilities of their Microtunnelling Systems and draw on this experience to assist Clients in delivering successful projects.