Bearings are made of bearing steel, which is used to manufacture rolling elements and bearing rings. Bearing steel has high and uniform hardness and wear resistance, as well as high elastic limit. The requirements for the uniformity of chemical composition, content and distribution of non-metallic inclusions, and distribution of carbides in bearing steel are very strict, making it one of the most demanding steel grades in all steel production.

Cleaning of bearings: When disassembling bearings for maintenance, first record the appearance of the bearings, confirm the residual amount of lubricant, take samples to check the lubricant used, and then wash the bearings. As cleaning agents, cleaning agents and kerosene are commonly used. The removed bearings are cleaned in coarse and fine cleaning methods, and placed in containers respectively. First, a metal mesh pad is placed on top to prevent the bearings from directly contacting the dirt in the container。

China has a relatively complete bearing industry chain resource. Our country has developed basic industries and has a relatively complete layout for the upstream and midstream of the bearing industry. The upstream of the bearing industry chain consists of metal materials such as bearing steel and stainless steel, non-metallic materials such as modified plastics, and components such as bearing rings. The midstream of the industrial chain is for bearing manufacturing, with bearing products mainly including automotive bearings, engineering machinery bearings, shield bearings, wind power bearings, etc.

   The global pandemic restrictions are decreasing, which has increased the activities of people and businesses. Consumer spending and demand for durable goods are increasing in most countries. The supply chain tends to be stable, and the financial constraints caused by fluctuations in monetary value and available loans have been reduced. These factors, along with others, have helped the world economy recover from the double-digit decline in demand for tangible non immediate consumer products in the global bearing industry.

Bearings are one of the basic mechanical components, mainly used for the transmission of mechanical parts, among which rolling bearings and joint bearings are the main products of the bearing industry. Bearings are widely used in industrial machinery, agricultural machinery, transportation, national defense, aerospace, household appliances, office machinery, and high-tech fields such as atomic energy and nuclear reactors.

The service life of a bearing refers to the number of revolutions or hours it experiences before pitting corrosion occurs under a certain load. Bearings within this lifespan should experience initial fatigue damage on any of their bearing rings or rolling elements. However, in our daily practical use, it can be clearly observed that bearings with consistent appearance under the same working conditions have significantly different actual lifespans.

Regular inspection and maintenance: During use, it is necessary to regularly check the operation and performance indicators of the bearings, promptly identify and handle problems, and perform regular maintenance and upkeep to ensure the normal operation and extend the service life of the bearings. In short, when using rolling bearings, it is necessary to pay attention to the above points to ensure the normal operation of the bearings and extend their service life.

1. Cleaning: Disassemble the bearing, record the appearance, and confirm the remaining amount of lubricant. Clean the bearings with cleaning agents such as gasoline or kerosene. Pay attention to protecting the bearings from direct contact with dirt in the container, and avoid damaging the rolling surfaces of the bearings during rough cleaning.