Bergbau Industrie Hafen Offshore Windkraft

We are closed

JDT is closed: 23.12.2019 - 03.01.2020



Merry Christmas

We wish all our customers, suppliers and business partners
a merry Christmas and a healthy successful 2019.

Instead of any Christmas gifts we will take the opportunity
to make a charitable donation again this year. 

Recertified acc. to DIN EN ISO 9001:2015

In August 2018 we have been succesfully recertified according to DIN EN ISO 9001:2015.
You can download the certificate here.

Successfully certified acc. to DIN EN ISO 50001

Our energy Management System has been successfully certified since November 2016.
The certificate is ready for download on this Website for your corresponding records.


Please, find our assembly videos for the following products:

Clevis Hook
Shortening Clutch
Spare part for clevis hook

Flat Connector
Block Connector



Dates of training programmes 2020

Based on the strong demand JDT now offers its in-house training "Qualified Person (specialist) for chain / -accessories" also to its international clients in English.

Please ask for your Training session 2020
(Mr. Sebastian Lange,  phone +49 2304 757-207)

Our training sessions at JDT give the participants solid knowledge of the correct way to handle lifting equipment
more + registration >>




Exhibitions 2019

You can contact us personally and get all informations about our products at the following exhibitions:

China Coal & Mining Expo
30. October - 02. November 2019

International Technologie Exchange & Equipment Exhibition on Coal & Mining
Hall W1.W1118
New China International Exhibition Center (NCIEC) - Beijing, China

A + A
05. - 08. November 2019

International Trade Fair and Congress for the topics: Safety, Security and Health at work
Hall 6.B38
Düsseldorf, Germany

Elmia Sweden
12. - 15. November 2019
International Trade Fair for Industries
Jönköping, Sweden

Oil & Gas Indonesia
18. - 21. September 2019
International Trade Fair for Mining
Jakarta, Indonesia

IME India
06. - 09. November 2019 
International Trade Fair for Mining
Kolkata, India

Experience gained in the operation of the biggest mining chain worldwide – 60mm F-Class®-Chain

60mm F-Class chain (3D and overview)

After introducing the F-Class®-Chain in all sizes from 22mm up to 48mm to the worldwide mining industry JDT was asked in 2010 to produce a 60mm chain for a new project at Shenhua Group in China.

For very high coal seams (up to 20m) the Chinese miners developed 7m high hydraulic support together with Zhengzhou Coal Mining Machinery Group. The SL1000/7m ultra heavy duty shearer was supplied by Eickhoff and the ultra-heavy duty scraper conveyor PF6H-1542 by CAT (formerly Bucyrus). The conveyor’s power was 3 x 1600kW.
JDT delivered the AFC-chain because the company wasthe sole chain manufacturer able to provide a chain with a breaking force of more than 4500kN (a 48mm Combi-chain breaks at 2900kN…) having a maximum vertical height of 135mm and a weight per meter less than 67kg.

The main additional advantages of using this chain were 7 years of experience with this type of chain worldwide and of course the patented “Short Studs” preventing nearly 100% kinking in slack chain situations, or the “diving in” of the trailing vertical link into the flight bar gap.

The 60mm F-Class®-Chain with its double-pitch size of 181mm (vertical) and 197mm (horizontal link) is also available in HO-quality. This means, the standard material is additionally alloyed with tungsten, which increases the breaking strength up to 5000kN and the toughness from 60J (standard) to 85J, which both could give increased safety factor as well as increased safety against shock loads, corrosion and abrasion.
While sprockets and flight bars were to be newly designed (but according to all other standard supplementary fitting to a standard round link) connectors with breaking load of 5000kN were successfully tested and available.

JDT: authorised economic operator (AEO)

With effect from April 04th 2012, J.D. Theile GmbH & Co. KG go awarded as "AEO" with status "AEO C" (Automated Economic Operator).
The owner of this certification has the mark to be of quality, safety and trustworthy. The increasing globalization and the changing international security situation prompted the world to create a framework fo a modern and effective risk management in customs administrations.
We are pleased to show our bisiness partners with this certification, that JDT not only stands for quality, sovereignty, security and confidence, but also our international business activities always fulfill the specific requirements of the customs administrations.

JDT 3D-data for download now at TraceParts

more >>

JDT wins patent infringement

JDT wins patent infringement proceedings against Thiele GmbH & Co. KG.
JDT will continue to obtain patent protection for their innovative chain concepts

More... >>

Tel.: +49 (0) 2304 / 757 0