Double row angular contact ball bearings are produced in a large number of machine parts and manufacturing precision requirements are very stringent, so for the vast majority of readily available assortment, purchased should be more cost-effective than repair, only in the following cases, bearing repair issues, namely:
　　(1) large factories used by a large number of identical type SKF bearings, ineffective mainly in the form of a rolling surface abrasion, fatigue and fretting wear, in particular damaged part many cages or rollers, rings or washers still have fixed values;
　　(2) large and oversize bearings, the brink of failure parts failure or who may have had no major injuries, or valuable bearing must be sought to extend its useful life;
　　(3) some are hard to purchase assortment, no spare parts had to be repaired after failure, especially imported bearings;
　　(4) bearing minor damage, such as inventory generated minor scale, as well as slight micro-abrasion during transport, such repair easy and discard it.
　　In addition to economics, repair of double-row angular contact ball bearings have the technical, this requires repair is well understood by bearings the corresponding technical requirements and bearing and parts on the structure, process and material characteristics, effects of otherwise difficult to ensure that the bearing repairs are eligible.
　　In General, the FAG bearing varieties of small volume, high price for a single bearing, or bearing simple structure. Large size, relatively lower repair costs, economic efficiency is higher.
　　In addition, to monitor the functioning of the bearing, systematically before expiration in double row angular contact ball bearings to repair it, can receive twice the effect. Follow the rational process, efficient repair equipment and tools, as well as help professional bearing factory, helped to improve economic efficiency.
　　User repairs of NSK bearing business, such as professional bearing company cooperation can be achieved, will probably yield the following benefits:
　　(1) clear repair all the technical requirements for the operation of, and how to repair the bearing to ensure the overall quality of the
　　(2) can take advantage of many of the bearing factory specialized experience, these experiences can reliably, efficiently, and cost effectively meet the technological requirements;
　　(3) can order the SIN card bearing enterprise from a professional mold, borrowing in the repair business, may be more economical and save a lot of trouble;
　　(4) can contribute to the professional bearing company orders such as cage, rolling elements, rivets, and other accessories, which can make repair work easy and convenient and economical.