Description: Metal sealed ball bearing is a rolling bearing equipped with metal sealing shields on one or both sides, mainly used to provide strong protection against dust, debris, and external mechanical contamination. The metal seal structure helps maintain internal lubrication stability and is widely used in mechanical environments requiring high durability and reliability. The structure of metal sealed ball bearings includes an inner ring, an outer ring, steel balls, a cage, and metal shielding covers. The metal shields are usually made of thin high-strength steel plates, which provide effective physical isolation while keeping rotational friction relatively low. Compared with rubber seals, metal seals offer better heat resistance and mechanical strength, making them suitable for higher temperature working conditions. Metal sealed ball bearings are often pre-filled with lubricating grease during manufacturing, allowing long-term operation without frequent maintenance. The sealed structure helps prevent lubricant leakage and blocks external dust particles from entering the bearing interior. However, metal sealed bearings may have slightly higher friction resistance compared to open bearings. These bearings are widely used in industrial machinery, electric motors, transmission systems, and high-temperature mechanical equipment. They are particularly suitable for working environments with dust pollution, moderate temperature, and mechanical vibration. Regular monitoring of bearing temperature, noise level, and vibration condition is important to ensure safe operation. If abnormal heating, metal shield deformation, or lubrication deterioration occurs, maintenance or replacement should be performed in time.
Category: News
Tag: Metal Sealed Ball Bearings