Low temperature bearing 7305 a1 liquid pump dedicated the concept and application of 192 degrees below zero

Low temperature bearing is actually the ordinary bearing improvement and progress. Raw materials made of special materials, through special forging process, make the change bearing structure on the basis of the original. In the process of secondary processing, through the surface treatment technology, long service life. Through a series of processing methods, the new bearing and reduce the friction coefficient between machinery and equipment, the friction, reduce the energy loss. Even if the long run, bearing still can maintain normal operation of the low temperature condition. This type of bearing is also called low temperature bearing. Friction caused by the energy loss is smaller, the smaller the temperature changes in the work environment, affect the performance of the bearing is smaller, the longer the natural low temperature bearing's life. Generally speaking, the low temperature bearing is not able to in the low temperature environment with high temperature bearing the opposite and stable operation of bearing, but refers to the use of special materials and structure to reduce the friction coefficient of bearing, reduce the heat generated by the friction, make the design of the bearing is able to run at low temperature for a long time. As a result, the working temperature of low temperature bearing reflects the bearing material processing technology and processing levels. During the running of its quality is mainly based on the bearing outer ring and the temperature difference between cooling oil injection. Low working temperature means a long bearing life and higher performance. The most commonly used low temperature bearing is single row deep groove ball bearings and cylindrical roller bearings. Bearing for low temperature viscous phenomenon, external factors are temperature, internal factors are different thermal expansion coefficient of the shaft, frame and material. When the wide temperature range, different material shrinkage rate is different, lead to smaller clearance and adhesion. Therefore, for the protection of the equipment has a wide scope of work including the equipment used at low temperature, it is necessary to calculate the expansion coefficient of material, at the same time try to use similar material expansion coefficient. In addition, in the structure design, avoid to use the circular cone roller bearings in the ends of the shaft structure. Using this structure, the longer the distance between the two bearings, the greater the likelihood of jam. If one end of the shaft set has a pair of conical bearing, the shaft axial movement with axial positioning is restricted, and the other end of the shaft with rolling bearings are used together with limited radial force, and can be as the axial temperature in the axial direction axial moving in a certain range. A: 970211 ceramic extreme high temperature bearing full details introduction: next article insulation bearing in detail