LuK manufactures pipe systems for transporting fluids between the master and slave cylinder. These lines are manufactured from steel lines and rubber hoses or supplied as extruded plastic tubing, depending on the requirements involved. Lines are optimized very early on in the development phase in terms of their static behavior (pedal and release travel characteristics) and dynamic behavior (pedal return speed in cold conditions, pedal vibration) using computer simulation techniques.
Steel-rubber lines are used if this is required due to the thermal conditions, for example if plastic tubing in the application would exhibit excessive volume elasticity with long line lengths and high temperatures.
Plastic lines are generally the more economical choice. Tubing made of PA 12 and PA 612 pre-formed using heat treatments are used. LuK’s self-laying line made of PA 612 is especially advantageous. It is supplied in straight lengths and fitted in the vehicle in an arch between the master and slave cylinder. The outstanding benefits of this technology include dispensing with the requirement for bending tools, simple transportation over long distances and its good technical performance.
All lines are supplied with quick-release connectors made of plastic. They can also be optionally supplied with chafing protection, additional thermal protection or integrated fixing clips.