Motion Control & Drives


Drive technology for tunnel construction

August 2024 Motion Control & Drives

Compact, robust, and reliable − these are the advantages of RUD’s Tecdos drive technology, which is a gamechanger in tunnel construction. Whether for lifting devices, arch drives, reinforcement cranes, or cutting equipment, the systems based on a chain drive offer a wide range of applications in tunnels and can withstand the challenging environmental conditions. Dust, mud or debris are no problem for the Tecdos system. Another plus point is that Tecdos drive technology from RUD is compact, which is very beneficial for use in tunnels.

“Our Tecdos products guarantee tunnel construction companies, manufacturers of tunnel boring machines, and engineering offices safety and efficiency in their projects,” says Anne Kühling, head of product management at RUD Ketten Rieger & Dietz. The basis of the RUD Tecdos drive systems is a high-performance round steel link chain. It is highly wear resistant, and therefore a durable and robust solution for use in tunnel construction.

Process reliability in tunnel construction

Tunnel construction is driven by major projects with tight time frames. Hence, it is crucial for processes to run reliably with no unplanned downtime. This is where RUD’s drive technology comes into play. The high-performance round steel chain as the basis of the system runs reliably and safely even in a challenging environment: dust, mud, stone or debris cannot damage it. The RUD Tecdos drive system also functions smoothly when the rack, cable, and rail reach their limits.

Space-saving drive

The second challenge is the relatively limited space available for tunnel construction work, and this is another area where the RUD Tecdos drive system scores highly. The individual components and the drive housing are compact and can be installed directly on site. “Cable drives in particular often require a large cable winch with several deflections. This is no longer necessary with our Tecdos drive systems, as the chain can be deflected in a small space and stored in a chain bag that takes up very little space,” explains RUD business development manager, Sascha Olfert.

Drive technology: products and systems

RUD Tecdos drive technology offers various products and systems for tunnel construction, from sprockets, lift limiters and slings to complete systems such as Tecdos Pi-Gamma and Tecdos Omega-Drive for different requirements in tunnel construction. RUD Tecdos Pi-Gamma is a flexible 2-in-1 chain drive system specially designed for vertical and horizontal applications. It has a fixed chain deflection of 180°, or a flexible chain deflection between 90 and 180°. Thanks to its flexibility, it ensures greater efficiency during construction work in tunnels. Depending on the version, a Tecdos Pi-Gamma drive can achieve tensile forces of up to 260 kN.

RUD Tecdos Omega Drive offers a solution for linear or rotary movements in tunnel construction. This drive system has a wrap angle of 180°. Depending on the application, it is either attached to the load to be moved and pulls it along the round steel chain, or it moves the chain from a different location. The standard variant of the Tecdos Omega Drive system creates tensile forces of up to 260 kN per drive.

Wide range of applications

RUD Tecdos drive technology is used in lifting devices in tunnel construction, for example, to lift heavy equipment to the tunnel ceiling, or to lift and lower vertical drills. The robust technology can also be used extensively in curved drives, belt storage systems or conveyor belts, and also in transport trolleys and transport racks. The drive solution from RUD is also used in cutting devices, reinforcement cranes, and shaft lowering systems.

There are virtually no limits to the use of Tecdos drive technology. Standard components and individual parts can be combined to form modular drive systems, depending on the specific requirements of the tunnel construction project. “Our Tecdos drive systems can handle weights of up to 25 tons. The drive is open at the top, which gives the advantage of adding an additional drive or even triple drives when you need to move large loads, “concludes Olfert.




Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Smarter motor technology for high-performance industrial automation
Adroit Technologies Motion Control & Drives
Adroit Technologies is bringing Mitsubishi Electric’s EM-A series permanent magnet motors to Africa, offering servo-like speed and position control at a lower cost by combining patented sensorless control with the FR-E800 inverter to eliminate encoders while achieving IE5 efficiency.

Read more...
A smarter approach to simplifying motion architecture
Motion Control & Drives
n motion system design, the wiring and drive placement between motor and drive are often decided by default, yet they shape a machine’s cost, footprint and adaptability. Kollmorgen sets out how single-cable and decentralised architectures simplify the cabinet.

Read more...
Robotic case packer achieves 99% uptime
Rockwell Automation Motion Control & Drives
DCC Automation designed a new robotic case packer for a nutrition supplement manufacturer using delta robots and a unified Rockwell Automation control platform, cutting changeover time from 45 minutes to 5 minutes, and achieving 99 to 99,5% uptime against the previous 10% per-shift downtime.

Read more...
igus puts 3D-printed wear materials to the test
igus Motion Control & Drives
A new igus white paper compares its tribological iglidur 3D-printing materials directly with conventional POM, reporting lower wear, more stable friction and up to ten times longer service life in gear testing for customised, low-volume and replacement components.

Read more...
SEW-EURODRIVE’s expanded local engineering capability
SEW-EURODRIVE Editor's Choice Motion Control & Drives
At Electra Mining Africa, SEW-EURODRIVE demonstrated how its expanded local engineering capability, digital technologies and lifecycle support strategy help customers improve reliability, energy efficiency and total cost of ownership across the full life of their drive assets.

Read more...
Latest Danfoss automation drive
Bearing Man Group t/a BMG Motion Control & Drives
BMG has launched the Danfoss iC7-Automation enclosed variable speed drive range in South Africa, backed by significant local stockholding of 400 V models up to 710 kW, approved warranty workshops, and DrivePro digital asset management support.

Read more...
Severe-duty workhorses powering mining
Motion Control & Drives
Mining machines such as rock crushers, pumps and conveyors need motors that combine high torque with robust enclosures, seals and cooling. WEG Africa explains how severe-duty motors deliver more than a decade of reliable performance in harsh conditions while meeting modern energy-efficiency standards.

Read more...
Looking beyond the spec sheet when choosing motion architecture
Motion Control & Drives
When machine builders focus only on torque, speed and price, engineering time, integration effort and long-term maintainability get overlooked. Kollmorgen explains how thinking at the system level, not the component level, leads to better motion architecture choices.

Read more...
Economy drive system closes the drive gap in the entry-level segment
Beckhoff Automation Editor's Choice Motion Control & Drives
Beckhoff has launched an economy drive system pairing its new AX1000 servo drive and AM1000 servomotor with the AF1000 dual-axis variable frequency drive on a shared EtherCAT platform, targeting series machines and price-sensitive markets without sacrificing TwinCAT integration or functional safety.

Read more...
SEW-EURODRIVE showcases modernisation and lifecycle support at Electra Mining Africa 2026
SEW-EURODRIVE Motion Control & Drives
At Electra Mining Africa 2026, SEW-EURODRIVE showed how it has expanded beyond equipment supply into integrated engineering solutions, plant modernisation and long-term lifecycle support for mining and industrial operators across Africa.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved