The best method and conditions for repairing KOYO bearings

       KOYO bearings are mass-produced mechanical parts, and the manufacturing precision requirements are very strict. Therefore, for most of the easy-to-buy bearing types, it should be more cost-effective to buy than to repair. Only in the following cases, bearing repair is considered. The problem is:
(1) A large number of bearings of the same type used in large factories are mainly in the form of wear on the rolling surface, fatigue or fretting abrasion, especially the damaged parts are mostly cages or rolling elements, and the ferrules or gaskets are still repaired. value;
(2) Large and extra large bearings, which have no major damage to the parts due to failure or failure, or valuable bearings must be managed to extend their useful life;
(3) Some types of bearings that are really difficult to purchase, have no spare parts after failure and have to be repaired, especially imported bearings;
(4) The bearing has slight damage, such as slight rust generated during the inventory period, and slight fretting abrasion caused by transportation. It is a pity that such repair is easy and abandon.
In addition to economics, the repair of the bearing is also technical, which requires the repairer to fully understand the corresponding technical requirements of the bearing, and the structural, technical and material characteristics of the bearing and its parts, otherwise it is difficult to ensure that the bearing repair has The desired effect.
First, the economic benefits of bearing repair
In general, the number of bearings is small, the number is large, the price of a single bearing is high, or the structure of the bearing is simple. If the size is large, the cost of repair is relatively low, and the economic benefit is higher.
In addition, monitoring the operation of the bearing, and planning to repair the bearing before failure, can get twice the result with half the effort. Following a reasonable process, using efficient repair equipment and tools, and getting help from a professional bearing plant can help increase economic efficiency.
Second, the benefits of cooperation with professional bearing companies
In the business of repairing bearings, if the cooperation of professional bearing companies can be obtained, the following benefits may be obtained:
(1) The technical requirements of each process of repair can be clarified, and how to ensure the overall quality of the repaired bearings,
(2) It is possible to utilize many of the specialized experience of specialized bearing plants, which can reliably, efficiently and economically meet process requirements;
(3) It is possible to order a tool for a professional bearing company, which can be economical and saves a lot of trouble;
(4) Orders such as cages, rolling elements, rivets, etc. can be ordered from professional bearing companies, which may make the repair work simple, convenient and economical.

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Easy maintenance method after fan or computer bearing wear

    According to the degree of wear, there are two ways to repair: the first one is only for fans, and the second is for computer trials.
    The first type: first clean the dust on the fan, avoid dust from entering the bearing during the installation process, then tear off the self-adhesive of the bearing seal, remove the bayonet on the shaft, and remove the residual in the bearing. Clean the oil with a clean tissue or a soft cloth, then wipe the shaft clean and add a little butter to the bearing. The principle is that it should not be too much to avoid seriously affecting the speed; then the aluminum can of the can is cut off. Cut a disc as large as the diameter, and dig a small hole in the middle that can pass through the shaft, and pad it between the bearing and the bayonet to reduce the axial movement and parallel movement of the bearing. If the gap is large, it is necessary to put a few thickening on the pad to make the bearing's back and forth movement distance below 0.5mm; the last step is to seal the oil seal, add a little butter, and finally put the fan back to the graphics card. You're done.
    The second type: the sound of the fan inside the computer case is getting louder and louder because the computer's graphics card fan is worn out due to lack of oil in the bearing, the bearing hole is worn out - the gap between the fan shaft and the bearing is too large, and the axial movement of the fan The gap is too large and the fan blades can move a few millimeters back and forth.
    The fan moves axially after the rotation, and the plane of rotation of the blade is also swaying, which not only wears more and more, but also generates a lot of noise. The vast majority of fan failures are due to this. Although it is the most troublesome to change a new fan, but it does not meet the spirit of DIY, and secondly, it is not always possible to find a model that can be replaced.
Of course, fans with such faults are not unrepairable. I will introduce a repair method now. The material is very simple, just a small piece of cans of aluminum and a little bit of butter (the butter should be clean and free of impurities).
1. First clean the dust on the fan to avoid any dust entering the bearing during the installation process;
2. Remove the self-adhesive of the bearing seal and remove the bayonet pin on the shaft;
3. Wipe the residual oil in the bearing with a clean tissue or a soft cloth, and then wipe the shaft clean;
4, add a little butter in the bearing, the principle is to be more than not to avoid serious impact on the speed;
5. Cut the aluminum skin of the can to cut a round piece as the outer diameter of the bearing pin, and dig a small hole in the middle that can pass through the shaft, and pad it between the bearing and the bayonet. The distance that the small bearing moves axially and moves in parallel. If the gap is large, it is necessary to put a few thickening on the pad, so that the front and rear moving distance of the bearing is below 0.5mm;
6. Seal the oil seal, add a little butter, and finally put the fan back into the graphics card.

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