NTN bearing the use of technical knowledge - bearing repair methods

by:Waxing     2020-05-26
NTN bearing is mass production machinery parts, and manufacturing precision is strict, technical specialization degree is high, so for most of the easy to get the bearing varieties, should be to buy more economical than repair, only under the following circumstances, to consider the fix the problem of bearing, namely: ( 1) Large factories used by a large number of the same type of bearing, the main failure forms of roller surface wear, fatigue, or micro abrasive wear, especially how to keep the damaged parts or roller, and ring or washer is still has a fixed value; ( 2) Large and super large bearings, on the brink of failure or parts has failure and there is no major damage, or precious NTN bearing must try to prolong the lifespan of effectively; ( 3) Some do indeed difficult to bought bearing varieties, no spare parts to repair after failure, especially import bearings; ( 4) Bearing a slight injury, such as inventory period have slight incrustation, and transport process produces slight micromotion abrasion, repair easy and abandon it's a pity that this kind of situation. In addition to the economy, NTN bearing repair and its technical, which requires the repairer fully understand the bearing corresponding technical requirements, and bearing and its components on the structure, process, and the characteristics of the material, otherwise it is difficult to guarantee the effect of bearing repair is required. Users in the repair of bearing business, such as the professional bearing enterprise cooperation can be achieved, may receive the following benefits: ( 1) Can clear repair processes all the technical requirements, and how to guarantee the overall quality of the repair bearing, ( 2) Can take advantage of the professional bearing factory many specialized experience, these experiences can reliably and efficiently and economically meet the process requirements; ( 3) Can be ordered to professional bearing enterprise job card amount of mold, borrow Yu Xiuli business, may be more economic and save a lot of trouble; ( 4) Can be ordered to professional bearing enterprises such as cage, roller, rivets and other accessories, can make the repair work easy and convenient and economic. If the NTN bearing installed on the set set, determine the direction of the bearing. The nozzle position of bearing seat lid should always on the other side of the tight sleeve nut. Must pay attention to the direction of the bearing, because the direction of the lid and the base is to be prepared in accordance with the original installation. 1. Sometimes involves the erection and dismantling of bearing; Weight of the lift, the use of tools and other equipment, or the use of high pressure oil. 2. To ensure a clean environment. 3. Check the size and shape of the journal of tolerance. 4. Check the supporting surface roughness Ra is not more than 12. 5μm。 The flatness tolerance shall be the IT7. Can use IT8 for less demanding applications.
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