，有关轴承从制造到安装到使用，其游隙的变化
Bearings are important components in machines and have been widely used in a variety of applications. From the basic manufacturing process to the installation and operation of bearings, it is of paramount importance to understand the clearance change the bearing may experience. In this article, I will discuss the clearance change from manufacturing until bearing installation and use.
During the manufacturing process, the free play gap of the bearing is kept controlled within precision specifications. The quality of the bearing’s free play is checked with a micrometer and various other precise equipment to make sure the bearing has the necessary clearance for smooth operation. To ensure that bearings remain within precise specifications, manufacturers may utilize assembly methods such as thermoshrinkage and light-producing laser to ensure accuracy during the assembly process.
Once the bearing has been manufactured, it is time to install the bearing. Unlike the manufacturing process, the installation process may cause some deformations in the bearing which will alter the pre-defined gap of the bearing. This can be avoided by using correct tools and methods such as mounting the bearing with a press machine or fastening it with heat resistant bolts. Furthermore, external forces such as vibrations and impacts should be avoided during assembly to prevent any misalignment and to maintain the original gap.
While the bearing is in operation, temperature fluctuations can cause the bearing to expand or contract which result in a gap change. This is often referred to as “thermal clearance.” The gap can be measured with a thermometer or LVDT (linear variable displacement transducer) and must be replicable from one bearing to another. Furthermore, excessive vibrations, impacts, and loads can also alter the gap.
Finally, over time due to regular wear and tear, the bearing may need frequent replacements or periodic maintenance. During this process, the bearing’s clearance must be checked to ensure that the new part has the same gap as before. Otherwise, the bearing will not function properly.
It is important to understand the clearance change that may occur during the manufacturing, installation, and operation of bearings. To ensure that the bearing performs optimally and endures longer, it is necessary to check the bearing’s clearance frequently and carry out periodic maintenance in the form of replacing parts or adjusting the gap. With the right knowledge and methods, it is possible to successfully maintain the clearance of a bearing throughout its entire lifespan.
