How much do you know about bearing remanufacturing?

Remanufacturing began more than 30 years ago in Europe and the United States, and its industrial scope is very wide, including automobiles, engineering machinery, electric motors, machine tools, equipment, home appliances, office equipment.


The method of remanufacturing a rolling bearing includes, but is not limited to, the scope of general remanufacturing. Generalized remanufacturing mainly relies on electroplating or spraying technology to add materials to the surface of parts and mechanically process to restore part size and shape accuracy. Rolling bearing remanufacturing requires the use of such techniques, such as: the inner and outer diameter of the bearing may be used during long-term use. If wear or loss of precision occurs, the above-mentioned remanufacturing technology is used to coat the inner and outer ring surfaces and then mechanically machined to restore the assembly size and precision to achieve the cooperation between the bearing and the mechanical equipment. On the other hand, the remanufacturing of rolling bearings is different from the general remanufacturing. The difference is mainly manifested in the remanufacturing of the raceway. Due to the large alternating stress of the contact pair of the rolling element and the raceway during the work, electroplating or spraying is adopted. Class of material growth technology remanufactured raceways are difficult to meet the application requirements of rolling bearings, and the method of material removal is widely used to remanufacture bearings.

       Due to the particularity of the raceway remanufacturing method, the rolling bearing cannot be returned to the original design life after remanufacturing, and only the bearing life can be returned to the original life curve. The calculated rated life curve in the figure refers to the theoretical life curve established in the bearing selection process according to the bearing application conditions. In practical applications, due to factors such as installation factors, environmental pollution, and insufficient lubrication, the actual life is often deviated from the predicted life value (the calculated life L10 of the actual life of the bearing used in heavy industry is less than 10%). The purpose of bearing remanufacturing is to excavate the remaining life of the bearing parts (mainly ferrules) that are not fully utilized.

Reprinted from the network