SKF bearing lubricating parts of working temperature is important basis for selecting grease. Using the typical parts of deep groove ball bearing lubricating greases, look at the relationship between life expectancy about bearing temperature and grease, increased bearing temperature 10-15 ℃, grease life reduced to about one-second. In General, lower temperature than the inner ring temperature of bearing outer ring around 15 degrees centigrade. At low speed (3000-5000R/min) work of bearing and internal media temperature approximation.
Machine SKF bearings for indoor use, intermittent start motor, such as machine tools, hand tools, instruments and precision machinery, general working temperature range of 10-50 ° c. For transport machinery, construction machinery, agricultural machinery, machinery bearings for outdoor work, general operating temperature change depending on temperature change in the atmosphere. Atmospheric temperature variations from-40-40 in most parts of the country. Increase the load, speed, ambient temperature rise, grease packed too full, as well as factors such as long-term continuous working temperature deep groove ball bearings are. For example, the neck load 1470N (150kgf), speed of 240 bearings working under 8000r/min conditions, temperature of 40-70 degrees centigrade. For truck travelling along the road of wheel bearings, temperature of 40-80 degrees centigrade. Large generator bearings, temperature of 89-90 ° c, SKF bearings for aircraft landing gear, high-temperature motor temperature of 150-200 ° c or higher.
　Bearing temperature with the use of bearing heat treatment process may be, conventional heat treatment process of tempering temperature is 150 degrees, bearing within the General requirements in the maximum use temperature of 120 degrees, if you have special requirements, you can use 200, 250 or higher tempering temperatures, using temperature can reach 170, 230 degrees or higher.
Need to check the status of machines running, in the bearing is the focus, and to prepare thorough screening programmes has become increasingly important. Because it is all most important condition monitoring of rotating machinery parts, to prevent damage of deep groove ball bearings, maintenance equipment to prevent unplanned downtime of SKF bearing damage caused during an important part of early detection at home.
SKF bearing in running process in the, sometimes bearing surface Zhijian will squeeze into external hard particle or hard mass foreign body or metal surface of mill chip, this will is bearing caused plow ditch shaped of abrasions, these hard foreign body through lubrication media entered deep ditch ball bearing internal, as bearing of constantly running, local friction health hot, easy caused friction surface local deformation and friction micro welding collection phenomenon, even may appears local melted of situation, last caused occlusal phenomenon.
SKF bearing breaking cause of defects and overload two factors when plus loads more than material intensity limit caused part overload fracture fracture is called, bearing overheating can also occur in the course of running organizations and local defects such as burns, defects caused by faults. In general we can instrument to check what kind of fracture, in most cases, deep groove ball bearings fracture mostly caused by overload failure.


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