Many modern large-scale construction machinery, such as asphalt mixing equipment, stabilized soil mixing equipment, and combined crushers, are large in scale, and the mass of each part is tens to hundreds of tons, and most of the construction machinery is in sand, gravel, and rainwater. Working in harsh environments such as wind and snow, its technical status will inevitably decline faster than other machinery. The coordination of parts will show varying degrees of looseness, wear, corrosion and scaling. The nature of the mating of each connection and the mutual position of the parts Relations and coordination of institutional work will be affected to varying degrees, resulting in a decline in performance indicators such as power, economy, and reliability, and even machine accidents.

Therefore, attention must be paid to the selection and technical maintenance of parts and components in construction machinery, especially bearings. A high-quality bearing can increase the working life of construction machinery and improve work efficiency, thereby improving economic benefits.