Date: 2013-08-22

NSK thrust ball bearings lubrication points in the operation of the

Two incompatible greases mixed, never mix incompatible greases. Consistency will usually become soft, the last loss damage because fat is easy, if you do not know your NSK bearings using grease, to grease all of the original clear first, and then add a grease lubricated.
We use the thrust ball bearings are often encountered in the course of this kind of situation, which is how, when formed, the solution has always been big business and technical personnel the most headache problem, instantaneous high temperatures can make the surface of the grinding zone depth (10~100nm) are heated to above the tempering temperature of the heating the workpiece. In the case did not meet the temperature of austenitic, heated up as the temperature increases, the surface layer-by-layer corresponding to the temperature or high temperature Tempering Tempering microstructure transformation of hardness also declined. Higher heating temperature, hardness and also more powerful.
In grinding, grinding wheel and the workpiece contact zone, can consume a large amount of, produce a lot of grinding heat, causing local instantaneous temperature of the grinding area. Using the theory of linear motion-heat-source heat transfer formula, calculation or the application of IR method under experimental conditions and method of thermocouple measuring instantaneous temperature, instantaneous temperature can be found in 0.1~0.001ms in the grinding zone can be as high as 1000~1500℃. Instantaneous temperature, sufficient to enable the work surface depth of high temperature oxide layer on the surface, non-crystalline, high-temperature tempering, quenching for the second time, or even burn crack and other changes.
Steel surface subjected to instantaneous temperature and oxygen in the air, up into very thin (20~30nm) thin-layer iron oxides. Worthy of note is the metamorphic total layer thickness of the oxide layer thickness and surface grinding test result is the correspondence between the. This indicates that the oxide layer thickness and the grinding process is directly related, are important signs of grinding quality.
Grease for used for thrust ball bearings have rust. Rust of performance bad main is see grease of soluble, different stick consistency and different information formed of grease, has different grade of anti-capacity and rust performance, General of for, stick consistency large and fat dissolved sexual poor of grease waterproof sexual better, such of grease even in NSK bearing cavity in the full has water, also can in steel appearance formed a layer can resist of oil film. Bike due to speed low, grease of select can relative with stick consistency slightly high, but waterproof sexual very strong of species, are often and water deal, this on makes waterproof sexual very important, even is slightly stick heavy of grease, also not effect low turned Xia of smooth, and once surface formed has oxidation damage, that whole stripping process and aging process are will fast of increased.  

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