The rubber hose’s role at brake hoses: It provides a flexible connection between the wheel to be braked and the chassis, and transfers the braking force during the operation of the brake system.
During our brake hose production we make our products exquisitely compliancing the regulations, so that their performance will fully meet the standard requirements. We continuously check our products’ quality with tests, and search for possible developments.
The rubber hose produced by us consists of 5 layers, every layer has an exactly defined role. From the inside to the outside, the first is the inner rubber hose, which has a task of resisting the nonpetroleum-base brake fluid. The first braided layer follows, which withstands the pressure in the inner rubber hose with its relatively dense fabric, then a thin rubber foil comes, which prevents the friction or rubbing between the two braided layers and enables the movement between them. The second braided layer gives further resistance against the inner pressure, increasing the lifetime of the hose. Finally, a cover rubber layer is necessary, which serves as a protection for the hose against the environmental effects, such as the UV radiation.
During the production of the innermost layer (extrusion of the inner hose), we use so-called mandrels, which gives the inner diameter. As the final rubber hose needs to be hollow, the mandrel has to be removed after the outer hose extrusion, using high pressure water.
While braiding, more crossing components are rattling around, while braiding the hose. This phase of production is clearly visible in slow motion:
We don’t only sell rubber hose as part of brake hose assemblies, but as a separate product as well, in coiled presentation.
We provide our brake hoses’ appropriate quality with different – standard-required – tests, some of which are designed specifically to check the resistance, lifetime of the rubber hose.
One of these is the dynamic ozone chamber test, which simulates an accelerated aging in ozone-rich atmosphere. You can see an example of this in the following video:
Moreover, we use a so-called whip test for checking the mechanical compliance, which with its repeated, dynamic loading investigates the rubber hose’s accelerated lifetime. We fix one end of the assembled brake hose to a stationary part, the other end to a rotating part, we fill in the system with brake fluid, then start the rotation. We inspect that how long the hose holds without losing pressure. This is shown in the video below:
The tests above and those not detailed ensure, that our customers get the finest quality, safe goods.