Schaeffler has introduced a new line of casing bearings that feature three slightly larger casing rollers placed between standard solid cylindrical rollers. This innovative design helps prevent misalignment in cylindrical roller bearings, especially under low-load conditions. These bearings are ideal for environments where load fluctuations can cause displacement and potential damage. The newly developed FAG casing bearings from Schaeffler are designed to perform reliably in harsh industrial settings, such as hot-rolled steel mills. During the steel rolling process, these bearings endure extreme loads, but once the material is transferred, they often experience almost no load. This sudden change can lead to bearing misalignment, which may result in premature failure. The new design effectively mitigates this issue by ensuring even load distribution. Rainer Eidloth, a representative from Schaeffler Group, explained: “Before any load is applied, the size difference between the casing roller and the solid roller is minimal. However, when radial force is applied, the elastic properties of the casing roller cause it to compress until it reaches the same size as a solid roller. This ensures that the load is evenly distributed across all rolling elements.” He added, “This new product is not only simple in design and easy to install, but it also maintains the same dimensions as standard cylindrical roller bearings, making it fully interchangeable. Currently, Schaeffler is working on the second generation of this design to better suit different operational conditions.” At the recent Hannover Fair, Schaeffler showcased a sample of the new bearing, which is more compact than other bearings in their range. Beyond hot-rolled steel mills, these bearings are also suitable for applications like wind turbines and paper mills—environments that demand high durability and reliability. In addition, Schaeffler has developed another bearing designed for extreme conditions, using a special material called ‘Cronitect.’ This material combines corrosion-resistant properties with martensitic hardened steel. The term ‘Cr’ stands for chromium, ‘Ni’ for nitrogen, and ‘tect’ refers to its corrosion resistance. While chromium and nitrogen-containing martensite steels have been known for some time, Schaeffler’s unique chemical composition and surface treatment enhance both strength and corrosion resistance. Cronitect bearings have undergone rigorous testing, including salt spray tests according to DIN 50021-SS, for over 600 hours without showing any signs of corrosion. According to Schaeffler, bearings made from this material can safely come into contact with water, amino acids, and cleaning agents. The material is available in both sealed and unsealed versions, offering flexibility for various applications.

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