Railway freight car rolling bearing retainer of brief introduction of hurt

Railway freight car rolling bearing retainer of 2019 - injuries profile 02 - Keep set with a variety of 27 in the rolling bearing, a fixed roller and keep an appropriate distance between each other can make the correct rotation, guide roller from load area into the load area and the attenuation of vibration, which requires the cage has enough strength, toughness, wear resistance, corrosion resistance and application of reliability. China's early railway wagon loaded with rolling bearing is adopted by the cold stamping process of the steel cage, in practice, bearing cage damage problem is particularly prominent. Most of the fracture position in a big guard from window beam junction, bearing cage once broken, will seriously affect the normal rotation of rolling bearing, and trigger a 'hot' and 'eager' malignant traffic accidents. At present, the railway wagon loaded with adopt the engineering plastics of the rolling bearing cage. A, the damage form of cage cage injuries can be characterized by knocked wounded, deformation, wear and fracture, melting, etc. Second, the damage reason 1 cage. For the steel cage, possible damage reason: bring about stamping stress and micro crack. Bring about by roller mill the friction and wear. 2. For engineering plastic cage, possible damage reason: bring about bearing temperature is exorbitant, engineering plastic softening point or melting point, causing cage deformation or melting. Bring about engineering plastic cage weld line welding strength is low, cause fracture. Bring impurities exist in the cage material, cause the loss of strength. In addition, the steel cage or engineering plastic cage by frequent vibration and impact is likely to cause deformation crack or break. （ Source: the resources of railway vehicle platform)