In a number of factors of refrigeration equipment second choice for high temperature bearing should be considered

In a number of factors of refrigeration equipment second choice for high temperature bearing should be considered 1. High temperature mechanical bearing occupied space and location in the mechanical system design, the size of the ordinary must first axis, and then, according to the size of the shaft to choose high temperature influence bearing a rolling development. Using ball high temperature lead to bearing is usually small axis, the axis selects high temperature roller and bearing. However, when high temperature for the diameter of the bearing in the machine different direction being severely limited, then selects the needle bearing, light high temperature protection and super light series of ball or roller bearing high temperature; When high temperature bearing in axial relative position information of the machine under a certain limit, can choose a narrow or narrow range of ball or roller bearing high temperature. 2. The size, direction and nature of the load bearing load is the main factor choosing high temperature bearing. Roller bearing used in heavy load, the load in the ball bearing is used for light load or, carburizing steel or bainite hardening bearing used in shock and vibration load. In the direction of the load function, accept pure radial load, temperature deep groove ball bearings, cylindrical roller bearing or needle selection of high temperature and high temperature bearing. Accept pure axial load is small, high temperature of thrust ball bearing choice; Accept big pure axial load, the choice of the high temperature of thrust roller bearing. When receiving the combination of high temperature bearing radial and axial load, usually in the high temperature angular contact ball bearing or the temperature of the tapered roller bearing. 3. High temperature affect the bearing performance when the center line of the shaft bearing shell different Angle error of the temperature of the center line, or due to less rigid support two larger pitch axis and the emphasis on curved or tilted self-aligning characteristics of easy axis has good tone heart ball or the choice of spherical roller bearing high temperature, high temperature ball bearing as well as external. That under the condition of high temperature or bent slightly inclined shaft bearings, can maintain the normal work. The stand or fall of high temperature impact bearing self-aligning properties, associated with its economic allow no alignment, coaxial degree value is larger, the heart more to the better performance. 4. High temperature bearing rigidity of high temperature bearing stiffness is refers to the high temperature bearing the force required to produce unit deformation. High temperature rolling bearing elastic deformation is small, cannot be considered in most of the machinery, but in some machinery, such as machine tool spindle, high temperature bearing stiffness is an important element, cylindrical roller bearing and taper roller temperature should be adopted. As a result of the rolling element and raceway point contact, the two poor high temperature bearing stiffness. In addition, all kinds of high temperature bearing can be preloaded to increase the support stiffness. High temperature, for example, angular contact ball bearing and taper roller bearing high temperature, in order to avoid the shaft vibration, increase the support stiffness, often impose certain axial force in advance, make each compression. Specifically pre-loaded shoulds not be too big. Is too large, high temperature bearing friction increases, temperature rise will affect the service life of high temperature bearing. 5. On an article: the purpose of high temperature bearing lubrication bearing lubrication method next up: none