Selecting Bronze Bearing Materials National （选择国家青铜轴承材料）.pdfVIP

Selecting Bronze Bearing Materials It is not at all unusual to come across a bronze sleeve bearing that has been performing satisfactorily for decades, even under severe operating conditions. In fact, a properly designed and maintained bronze bearing often outlasts the equipment it serves. Achieving such performance is not difficult, but it requires sound design, the right bearing material, accurate manufacture and, as with any mechanical equipment, diligent maintenance. Bronzes are unquestionably the most versatile class of bearing materials, offering a broad range of properties from a wide selection of alloys and compositions. This data sheet describes the most used standard bearing bronzes and is aimed at helping the designer select the right bronze for the job at hand. Bearing Design Good bearing design involves three fundamental elements: understanding the service environment, designing for proper lubrication and selecting the best bearing material for the job. Accurately assessing expected service conditions cannot be overemphasized; it is the basis for all subsequent decisions. Creating or at least identifying the lubrication mode in which the bearing will operate is equally important. Sometimes the mode can be established through design; other times it is simply dictated by operating conditions. Finally, the bearing material selected must suit both the service environment and the operating mode. The wide array of properties offered by the bearing bronzes simplifies material selection process and helps insure that the alloy chosen will provide optimum bearing performance. Service Conditions The most important prerequisite to assuring optimum bearing performance is knowing - or accurately predicting service conditions. Major areas of consideration are:  Load, steady and impact,  Speed at design load,  Oscillating motion, i.e., less than full r