introduce the motion principle of needle roller bearing

we often encounter a bearing in which the rolling elements are thin and long, which is different from traditional rolling bearings. In practice, such bearings are needle bearings. Do you know the movement principle of needle roller bearings?

needle roller bearing is a kind of rolling bearing. Its English name is needle bearing. The radial bearing whose rolling body is a needle roller is a needle roller bearing. Relative to its diameter, the drum is thin and long. Such rollers are called needle bearings. Although the cross-section of needle roller bearings is small, they still have a high load-bearing capacity and are often widely used in occasions where radial space is limited.

needle roller bearings is slightly contracted near the end face. The contact correction between the needle and the raceway line results in the avoidance of destructive edge stresses. Support roller needle roller bearings are thick-walled outer rings. The high-precision sorting roller is guided by the edge of the high-rigidity outer ring after high-temperature and high-nitrogen quenching. Through linear contact, the roller can easily rotate on the raceway and bear huge loads.

In order to eliminate stress, the outer ring of the roller is designed as a circular arc surface. The curve roller has a single, double sealing ring, no sealing ring, with sealing ring and other specifications. The sealing ring has large oil storage space, and lithium grease is lubricated for a long time to extend the lubrication interval. The sealing ring is made of nitrile rubber or ST12, with a frame, and the operating temperature range is -30°C to 100°C or -30°C to 180°C. The compact curved roller can withstand heavy loads and high-performance operation. The outer ring of the gate has no flange and no inner ring idler.

needle roller bearing is needle type, the maximum diameter is 5mm, and the length is 3 to 10 times the diameter. Although the cross section of the needle roller bearing is narrow and small, the load is larger than that of the ordinary bearing with the same size ratio. Due to the large number of needle rollers, large rigidity and small inertia, it is suitable for the motion state of swing.

The above is a brief introduction to the movement principle of needle roller bearings. After reading the above introduction, you will find that needle roller bearings are radial bearings for needle rollers and are widely used in mechanical equipment. It is very convenient to use and maintain. Needle roller bearings are produced and used in large quantities.