Schaeffler has introduced a new line of casing bearings designed to enhance performance in challenging industrial environments. These bearings feature three slightly larger casing rollers positioned between standard solid cylindrical rollers, which helps prevent misalignment and displacement caused by low or fluctuating loads. This innovative design ensures more stable operation, especially in applications where the load conditions change frequently.
The FAG casing bearings from Schaeffler are ideal for use in demanding settings like hot-rolled steel mills, where they endure extreme loads during the steel rolling process but often experience minimal pressure after the transfer. In such scenarios, bearing misalignment can occur, leading to potential damage. The new casing bearings address this issue by maintaining better stability under varying load conditions.
According to Rainer Eidloth from Schaeffler Group, "Initially, the size difference between the casing roller and the solid roller is minimal. However, when radial load is applied, the casing roller deforms elastically and eventually reaches a similar size to the solid roller. This allows the load to be evenly distributed across all rolling elements, improving performance and durability."
The company's head emphasized that the new product is not only simple in design and easy to install but also compatible with standard cylindrical roller bearings due to its standardized dimensions. Currently, Schaeffler is working on a second generation of the bearing, aiming to adapt it for a wider range of applications and environments.
At the recent Hannover Fair, Schaeffler showcased a compact version of the bearing, smaller than many of its other models. These bearings are suitable for high-demand environments such as wind turbines, paper mills, and steel production facilities. Additionally, Schaeffler has developed another specialized bearing made from 'Cronitect' material—a corrosion-resistant alloy composed of chromium (Cr), nitrogen (Ni), and a corrosion-resistant compound (tect). This material combines martensitic hardening with enhanced resistance to harsh conditions.
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. Schaeffler claims these bearings can withstand exposure to water, amino acids, and cleaning agents. The material is available in both sealed and unsealed versions, offering flexibility for different operational needs.
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