nitrate,nitrate salt,sulfate-free,HNO₃,Ionic compounds MIANYANG KEJIXIN TRADING CO., LTD , https://www.kjxnitrate.com
Schaeffler introduces new casing bearings for demanding environments
Schaeffler has introduced a new line of casing bearings that feature three slightly larger casing rollers placed between traditional solid cylindrical rollers. This innovative design helps prevent the displacement of cylindrical roller bearings under low-load conditions, ensuring better performance and reliability in challenging applications.
These advanced FAG casing bearings from Schaeffler are designed for use in harsh environments such as hot-rolled steel mills. During the steel rolling process, these bearings experience extremely high loads, but once the material is transferred, they are almost unloaded. In such situations, misalignment can occur, potentially leading to damage. The new design effectively addresses this issue by maintaining proper alignment even under fluctuating load conditions.
According to Rainer Eidloth from Schaeffler Group, "Before any load is applied, the size difference between the casing roller and the solid roller is minimal. However, when radial load is applied, the casing roller deforms elastically due to its material properties, eventually reaching the same size as a solid roller. This ensures an even distribution of the load across all rolling elements, enhancing durability and performance."
The company's head emphasized that the new bearing is not only simple in design but also easy to install. Moreover, because it maintains standard dimensions, it can be used interchangeably with conventional cylindrical roller bearings, making it a versatile option for various applications.
Eidloth also mentioned that the second generation of this design is currently undergoing testing to adapt to different operational environments. At the recent Hannover Fair, Schaeffler showcased a compact version of the bearing, which is smaller than other models in their range. Beyond hot-rolled steel mills, these bearings are also suitable for demanding environments like wind turbines and paper mills.
In addition, Schaeffler has developed another bearing specifically for extreme conditions. This bearing is made from a special material called 'Cronitect,' which 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 martensitic steels containing chromium and nitrogen have been known for some time, Schaeffler’s innovation lies in the precise chemical composition and advanced surface treatment, which significantly enhance both strength and corrosion resistance.
Cronitect products have been tested on salt spray testers according to DIN 50021-SS for over 600 hours without showing any signs of corrosion. According to Schaeffler, bearings made from this material can withstand exposure to water, amino acids, and cleaning agents. The material is available in both sealed and unsealed versions, offering flexibility for different industrial needs.