Light Bearing – Smooth Sliding
For professional sports bicycles, material features such as low friction coefficient, low weight and high specific strength, are of major importance. This is why Kunststofftechnik ROS GmbH Co. KG in Küps, Germany, uses a polyetheretherketone material (PEEK, manufacturer: Victrex Plc, Thornton Cleveleys, Great Britain) for the casings of their ball bearings. Casings made from this material link stiffness and elasticity in a way that enables good positioning of the balls. The good sliding properties between casing surface and balls reduces friction loss, thus minimizing wear in the bearing. Moreover, the PEEK’s low density keeps the casing’s inertia low, and enables fast acceleration. The bearings require no lubrication, while their service life is increased.
Having recently joined a partnership with ROS, CeramicSpeed based in Holstebro, Denmark, offers the PEEK-based casings for application in professional racing bicycles. They reduce the friction that takes place in the hubs, thus facilitating acceleration for the cyclist. Using them in bottom brackets enables the athlete to step up pedaling speed more easily. Even in a humid environment, there is no friction loss from swell in the casings. For the 2009 Tour de France, nine out of twenty teams had their bikes equipped with these bearing casings.
Patents encourage innovation: Stay on the ball with the latest innovations in the plastics industry in our patents section.
Would you like to subscribe to our Newsletters on plastics technology and profit from the latest information?
You know the trade name but want to know the material manufacturer, type of polymer and delivery form? Search here!