
Rail technology
Contact wire at final tension.
Efficient and precise installation of catenary systems requires machines that lay the wires under the exact tension at which they will finally be fixed. Our units can be mounted on road-rail vehicles as well as on railway wagons.
Specialised in
catenary construction.
ZECK offers a wide range of products and services in the rail technology sector, specialising in catenary construction: from electronically controlled catenary installation units and precision pullers to training courses.
The units are installed on a rail-bound vehicle or a road-rail truck. We manufacture them individually according to your specific technical requirements.

Key figures
of the system.
Figures from the rail technology brochure, as of 09/26.
- 10–30Kilonewtons tensioning forcewire installation with bull wheel units
- 1–3wiresindividually controlled bull wheel units
- ± 1 %toleranceof the nominal tensioning force with HP-ATS (optional)
- < 10Kilonewtons tensioning forcewith hydraulically tensioned drum stands
Well thought out,
down to the finest detail.
The components of a ZECK catenary installation unit according to the rail technology brochure (as of 09/26). Equipment varies by unit; items marked * are optional.
- Bull wheel unit
Installation at the final tension
For 1, 2 or 3 wires, individually controlled, maximum tensioning force 30 kN. The wires are installed at the final tensioning force – no re-tightening necessary.
- ZOL 3.0
Precision control, easy operation
12-inch touchscreen with function keys, monitoring of the tensioning forces with an integrated diagnostic system, PLC control and the ZECK stringing data record system with USB interface. GPS modem for remote diagnostics*.
- HP-ATS*
High-precision tensioning
Automatic tensioning system for tolerances of ± 1 % of the set nominal tensioning force. Careful wire installation thanks to soft start-up and stopping.
- Pretension
Electronically controlled
Continuous pretension of the drum stands independent of drum size and unwinding diameter. The load-sensing system supplies the hydraulics as needed and saves energy.
- Drum stands
VARIO, standard, self-loading
VARIO with hydraulic drum clamping without drum shaft, standard with drum shaft, self-loading with craneless drum holding from the upper surface of the rail – for catenary and underground cable installation.
- Equipment
Cabin, positioner, power unit
Soundproof cabin, optionally with ventilation, heating and air conditioning. Contact wire positioner with 1–2 hydraulically controlled guidance arms operated by radio remote control. Encapsulated power unit with diesel engine – supply from the carrier vehicle also possible on request.

Catenary installation units installed on railway wagons.
Rail technology brochure
Rail technology
- EnglishEdition 09/2026
- DeutschEdition 09/2026
- FrançaisEdition 09/2026
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your project?
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