In order to ensure the normal operation of the TIMKEN joint bearing, it must have good lubrication. The rated load and the limit speed of the rolling bearing are determined under the assumption that the lubrication is proper. The so-called proper lubrication means that the lubricant is properly selected, the amount of lubricant is appropriate, and the lubrication is appropriate. Badness is often one of the main causes of early damage to bearings. According to statistics, about 1/3 of the bearings are damaged due to poor lubrication.
When the TIMKEN joint bearing rotates, the bearing wears and fails due to frictional resistance. The resistance to the rotation of the rolling bearing is composed of rolling friction, sliding friction and lubricant friction. Rolling friction occurs when the rolling elements roll on the bearing raceway; sliding friction occurs on the guiding surface of the rolling body in the cage, the rib guiding surface of the cage, and the roller end face and the ferrule rib in the roller bearing; lubrication The friction of the agent consists of the internal friction of the lubricant at the contact and the agitation and extrusion of the lubricant. Therefore, the resistance of the impedance TIMKEN joint bearing movement is the sum of the above three frictions. The purpose of lubrication is to avoid the direct contact between the raceway, the rolling element and the cage metal through the grease and its lubrication method, reduce the friction heat, minimize the frictional resistance, thereby reducing the wear, preventing the corrosion and prolonging its use. life.
About 80% of TIMKEN joint bearings are lubricated with grease. There are many types of bearings that are sent to the user after being greased in the bearing factory. Therefore, some people refer to grease as the fifth largest part of the bearing's inner ring, outer ring, rolling element, and cage. Explain the importance of grease to bearings.
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