Sliding bearing, a bearing that works under sliding friction. The sliding bearing is stable, reliable and noiseless. Under the condition of liquid lubrication, the sliding surface is separated by lubricating oil without direct contact, which can greatly reduce the friction loss and surface wear, and the oil film also has certain vibration absorption capacity. But the starting friction resistance is large. The part of the shaft supported by the bearing is called the journal, and the part matching the journal is called the bearing bush. In order to improve the friction property of the bearing surface, the antifriction material layer cast on the inner surface is called the bearing liner. The materials of bearing bush and bearing liner are collectively referred to as sliding bearing materials. The application of sliding bearing is usually under the condition of high speed, heavy load, high precision or intermittent operation.
Sliding friction occurs when the sliding bearing works; the rolling friction mainly depends on the manufacturing accuracy; and the friction mainly depends on the material of the sliding surface of the bearing. The general working surface of sliding bearing has self-lubricating function; the sliding bearing is divided into non-metallic sliding bearing and metal sliding bearing according to the material. The non-metallic sliding bearing is mainly made of plastic bearing, which is generally made of engineering plastics with good performance; the professional manufacturers generally have the self-lubricating modification technology of engineering plastics, which can achieve certain performance by self-lubricating reinforcement modification of engineering plastics through fibers, special lubricants, glass beads, etc., and then by injection molding with modified plastics Processed into self-lubricating plastic bearing.
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