Motor bearing material and vibration detection

According to the national standard, the vibration speed value and acceleration value of the complete set of bearings are detected. ZWZ also has the domestic leading vibration measurement of super-large 4-band bearings and 6.4 angular contact ball bearing vibration and spherical roller bearing vibration can be compared with deep groove ball bearings, cylindrical roller bearings or according to user requirements, please specify the specific speed when ordering and vibration value requirements. Temperature rise measurement system, bearing inner diameter range of 120-200mm ZWZ has a large-scale spectrum analysis system, the system measures the maximum bearing outer diameter of 500mm, covering the vibration detection of most super-large motor bearings, and can analyze the bearing vibration and temperature rise. assessment. Measuring the waviness of the parts to ensure the vibration value of the complete set of bearings, the ZWZ ring raceway spectrum analyzer is an important means of quality control of the motor bearing process. Analysis to provide basis for quality analysis and equipment adjustment. The performance and reliability of rolling bearings depend to a large extent on the properties of the bearing material. Rolling bearings need to maintain high-speed and high-precision rotation while repeatedly bearing large stress on the contact surface between the ring and the rolling element. For this reason, the ferrule and rolling element materials are required to have certain hardness related to bearing capacity, rolling fatigue resistance under rolling contact and different lubrication conditions, wear resistance, and dimensional stability. More non-metallic inclusions are easy to cause fatigue cracking, so the fewer non-metallic inclusions, the cleaner the material and the longer the rolling bearing life. Rolling bearing rings are generally made of high carbon chromium bearing steel. For bearings subject to high shock loads and alternating bending stresses, carburized steels are used. High carbon chromium bearing steel is the most widely used in rolling bearings. It adopts the method of integral quenching, and both the surface and the core can be hardened. In recent years, due to the continuous improvement of the quality of bearing steel, the oxygen content and non-metallic inclusions have been reduced through vacuum degassing treatment, and the material properties have been greatly improved. For bearings with long life and high reliability, ESR bearing steel with higher cleanliness can also be used. The heat treatment process of ZWZ rolling bearing rings and rolling elements ensures that the bearing is dimensionally stable within 120 °C. The cage is used to separate the rolling elements to prevent the direct contact of the adjacent rolling elements, so that the friction and heat generation during work are reduced. Keep the distance between the rolling elements equal, so that the load is evenly distributed and the stiffness is stable. It can keep the rolling elements of separable bearings from falling off, and can also be used to guide the rolling elements. The cage also acts as a grease reserve, thereby improving bearing lubrication. ZWZ motor bearing cages can be roughly divided into stamping cages, metal solid cages, nylon cages, etc. Under special high temperature working conditions, high temperature tempering treatment is required for the rings and rollers, and the bearing rings need to undergo special processing. . S1 bearing rings are tempered at high temperature, and the working temperature can reach 200 ℃. S2 bearing rings are tempered at high temperature, and the working temperature can reach 250 ℃. S3 bearing rings are tempered at high temperature, and the working temperature can reach 300 ℃. S4 bearing rings are tempered at high temperature, and the working temperature can reach 350 ℃.