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Carbon slides, electricity collectors

1. Application

CARBO-GRAF continues the production of carbon sliding contacts for tram, trolleybus, railway, and industrial traction, a tradition initiated by Carbon Electrode Plants in Racibórz several decades ago. The extensive experience and continuous improvement of manufacturing technology result in a product that competes successfully with other manufacturers in the coal and graphite products industry.

The Carbon Electrode Plants in Racibórz used to be the sole supplier of carbon current collector inserts for the entire national rail fleet, except for the railway traction. This allowed for the continuous implementation of customer feedback to improve quality and reduce production costs.


Presently, these experiences enable CARBO-GRAF Ltd. to produce carbon inserts with a high quality-to-price ratio, which is crucial for customers. The benefits of using properly selected carbon sliding contacts are undeniable, especially concerning parameters such as:

  • Durability of traction cables

  • Elimination of failures in welding the collector with the traction cable

  • Elimination of radio interference

  • Reduction of noise

  • Reduction of operating costs

2. Assortment:
3. Dimensions of the offered slides and current collectors
4. Parameters of composite materials
5. Research and development.

In the recent period, CARBO-GRAF Ltd. has been developing the technology for manufacturing carbon sliding contacts bonded to aluminum holders for tram and railway pantographs, based on our own bonding technology and holder design. Our sliding contacts are characterized by product innovation, where one product embodies a combination of several functional and practical features, such as:

  • The ability of the sliding contact inserts to carry large electrical loads

  • High durability and resistance to systematically occurring operational loads

  • High wear resistance achieved through optimizing the hardness of the composite

  • Improved user comfort during operation


In this regard, we collaborate with domestic scientific research centers, including AGH Kraków, Institute of Non-Ferrous Metals in Gliwice, and Silesian University of Technology. Currently, we are working on the development of next-generation carbon material technology, aiming to significantly reduce the weight of the sliding contact, decrease the resistance between the sliding insert and the self-supporting holder, and enhance its operational dynamics.

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