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Technical articles
The total number of running revolutions or the total number of working hours at a certain speed before contact fatigue wear occurs in any component of a rolling bearing，The life of rolling bearings varies greatly，Bearings produced in the same batch operate under the same conditions，Its life can be several times or even tens of times different。In the same batch of bearings90％The total number of revolutions that can be achieved or exceeded before fatigue flaking（Or the number of hours worked）Is called rated lifeL。Rated life is100The load that can be borne at 10,000 revolutions
What is the difference between precision bearings and ordinary bearings
KOYOThe use of bearings on machine tools is mainly used in the following three parts：Principal axis、Ball screw and general drive shaft。 Principal axisKOYOBearings are used as basic parts of machine tools，Its performance directly affects the speed of the machine tool、Turning accuracy、rigidity、Vibration cutting resistance、noise、Temperature rise and thermal deformation，And then affect the precision of the machined parts、Surface quality etc。therefore，High-performance machine tools must be paired with high-performance onesKOYObearing。
Inspection methods for bearing lubricants
The bellows coupling consists of two bushings and a thin-walled metal tube，Usually they are joined together by welding or bonding。Although many other materials are available，However, the most commonly used are stainless steel metal tube materials and aluminum alloy bushings。Stainless steel bellows have excellent rigidity、intensity，It is often manufactured by hydraulic shaping。Hydroforming involves placing thin-walled tubes in
Since the reform and opening up，With our additionWTOGradually stand out from the international competition，Chinas bearing industry has been stable and rapid development。 According to the National Bureau of Statistics annual report，2004National bearing industry state-owned and state-owned holding enterprises and annual sales500The number of non-public enterprises with more than 10,000 yuan has reached927a，2003Annual industry bearing output41100 million sets，Bearing sales revenue392Hundred million yuan，Chinas bearing sales have jumped
Basic knowledge of industrial bearings
Rolling bearing steel is the steel used to manufacture the rolling element and the inner and outer rings of rolling bearings，It is usually used in a quenched state。Rolling bearings need to bear high alternating loads during work，The contact stress between the rolling element and the inner and outer rings is large，At the same time, it works in the lubricant medium。
Classification of printer bearings
Thermodynamically speaking，Metal compared to its corrosion products，It has a high energy，Its unstable，There is a tendency for spontaneous conversion to lower energy corrosion products，That is, the corrosion of metal is a natural phenomenon。
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