Rosendahl gas injector valve

How to put 40 Gb per second into practice

March 09th, 2023

Category8 LAN cables: What are the important factors in cable production? And how can artificial intelligence enhance the process?


A serious upgrade for LAN cables

Category 8, the latest generation of LAN cables, are among the most powerful data cables on the market. In theory, they can transfer data up to 40 Gb per second at a bandwidth of more than 2 gigahertz. To put this in practice, cable production must proceed flawlessly.

40 Gb per second. That is four times more than a 6A cable can transmit. Following this serious upgrade, Cat8 cables are especially popular for use in data centers and server rooms, driving the transitioning to higher data loads.

Higher performance requires more sophisticated cable design. With Cat8, the quality of shielding necessary to make it work is on a totally different scale. So is the insulation and sheathing of the cable. Cat8 cables used for IoT applications also have the power supply built right in and must withstand very high temperatures on the inside. All this leads to increased demands on the corresponding cable and consequently on the cable manufacturing processes.

stable process from start to finish

For optimum data transmission, the LAN cable must have a consistent diameter, as well as perfect ovality and centricity throughout all of the layers. Only then will the metallic conductors run parallel to each other all the way and offer no room for signal attenuation. It is also important to prevent periodic vibrations on the production line. These can lead to interference points which reduce the data signal in the finished cable. Thus, to ensure that the theoretical transmission rates of Cat8 cables can also be maintained in reality, stable production is the key. All of the machines and processes, from pay-off to take-up, must be perfectly coordinated.

Here at Rosendahl Nextrom we offer intense process know-how and experience in insulation and sheathing technology, including an AI-supported foaming process for the typical skin-foam-skin structure of Cat8 cables.

fine-tuned foaming process with artificial intelligence

Rosendahl’s extrusion technology in combination with a high-precision gas-dosing system ensures long-term process stability and a very fine and uniform foam structure. Just recently, the foaming process has been enhanced with the help of artificial intelligence.

high speed for data

Check out our insulation and jacketing lines for the production of any type of metal cables.

BM Rosendahl battery prouduction laboratory


get in
with us

Rosendahl Nextrom is a global leader in battery, cable & wire and optical fiber production technologies whose goal is to connect your needs with our technology. Quality, customization, product know-how and close cooperation with our partners are our core values.
here for you

Any questions?
Get in touch with us.

here for you


learn more


learn more


learn more


learn more


learn more