Analysis of three common problems of thin wall bearing with constant cross section

According to the knowledge explanation of Zhonghua bearing network, do we often encounter such related problems about the use of thin-walled bearings with constant cross-section: "why does the sealing performance of the bearings with constant cross-section decline?", "why does the sealed bearings with constant cross-section have grease leakage?", "why does the bearing jam when rotating?", etc. In view of these problems, how can we judge and find out the causes? Next, we will share the causes and solutions of the problems of the thin-walled bearings with equal cross-section.

Why does the sealing performance of constant cross-section bearing decline?
The phenomena are: large friction torque; poor dust and dust prevention performance. The reason is: the bearing structure is special: thin wall, small volume, light weight, small sealing space, poor rigidity, easy deformation and so on. It is difficult to improve the machining accuracy of bearing parts, including seals, due to the difficulties of hot working and cold working. At present, the structure and size of this type of seal in the market are basically the same. Due to the processing error, the sealing performance is not good or the friction torque is large, which can not meet the requirements of the bearing. Solution: in order to meet the sealing requirements and friction torque requirements of bearings, combined with the machining accuracy of bearing parts easy to deform and dimensional tolerance and the machining accuracy of sealing ring, according to the limited bearing space, the structural dimension of sealing ring is designed individually to make up for the machining accuracy error of bearing parts and sealing parts, so as to achieve the expected effect and meet the requirements of users.

Why does the uniform section sealed bearing have grease leakage?
The phenomenon is: the grease inside the bearing overflows from its sealing lip. The reason is that the bearing has special structure size and small sealing space size, which limits the rationality of the sealing structure. Solution: select a reasonable process method, through a number of process tests, in the premise of meeting the requirements of use, put an end to the phenomenon of grease leakage of sealed bearing.
Why does the bearing jam when it rotates?
Its phenomenon is: bearing axial force or radial force rotation, feel sometimes big or small obstruction, running feeling. When rotating rapidly or at high speed, there will be vibration and noise. The reason is: the bearing is not clean, there is dirt on the working surface or the working surface is rough and damaged. Solution: select the appropriate cleaning solution and cleaning method, strictly control the quality of the working surface, improve the inspection means, and ensure that the bearing is clean and free of foreign matters. Warm tips: thin wall bearing with equal cross-section is also called thin-wall ring bearing, which has high precision, very quiet and strong bearing capacity. Thin walled ring bearings can be deep groove ball bearings, four point contact bearings, angular contact ball bearings, Thin-walled bearing cross section is mostly square. In these series, the cross section remains unchanged even for larger shaft diameters and bearing holes. These bearings are therefore called equal sections.

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