The quality of the bearing installation will directly affect the life of the motor. Before the assembly, preparations such as cleaning inspection should be done before installation. The following Dalan Motor Xiaobian gives you detailed explanations of the assembly process and precautions for the three-phase asynchronous motor rolling bearings, and to avoid rolling bearings as much as possible. Incorrectly assembled motor vibration and noise problems. First, the assembly process of the motor rolling bearing Assembling principle: According to the bearing structure, size, working conditions and the matching properties of the bearing components, the pressure during assembly should be directly added to the end face of the ferrule to be mated, and no pressure can be transmitted through the rolling elements. 1, press into the assembly method: the use of copper rods and handcuffs (also can be based on the size of the shaft, hole fixtures), should be symmetrically beat in a certain order, must play in the seat with the surplus, And be sure to strike evenly to avoid the weak parts of the inner and outer rings of the bearing. Can also be pressed into the press, the same method as above, but pay attention to uniform press, not skew. 2, temperature difference assembly method: Rolling bearings allowed to use oil heating, the oil temperature should be between 100 ~ 120 °C (plastic spacer must not exceed 100 °C), the bearings should be placed in the oil when cold, do not allow the bearing and the heating container bottom and When the wall contacts, the oil temperature gradually rises. When it reaches the temperature, it is rapidly removed. The set is mounted on the shaft and cooled naturally to check if it is in place. 3, frequency induction heater: commonly known as bearing heaters, currently using this assembly method is more advanced, and reduce pollution. Second, should pay attention to matters 1. Regardless of which method is adopted, attention should be paid to following the principles and requirements. The procedures must be followed and the original records must be made. 2, after the assembly is completed, must be based on the working conditions of the results of review, and make clearance adjustments to ensure bearing clearance, to meet the requirements. 3, adjustment of the rolling bearing clearance, generally used: 1 gasket adjustment, by changing the thickness of the gasket at the bearing cover, using pressure lead, feeler gauge, caliper measurement, etc., to measure the average value, select the appropriate gasket to meet the requirements; 2Adjustment of screws: tighten the screws until the shaft rotates tightly, then return the screws back to a certain distance according to the required clearance (calculate the angle of reverse twisting according to the distance and pitch); 3 sensory adjustment: used in the lower accuracy of the working conditions, with proper experience to properly tighten the bearing, the shaft used for rotation, loosely rely on experience, feel the axial, radial gap to adjust the gasket thickness. ----- Editor: Dalan Oil Pump Motor 02 - Procurement Consultant Copyright http:/(Dalan Motor) Please indicate the source Compared with large complex thin - wall castings, civil products have lower requirements on casting quality. However, for the latter, shorten the production cycle, improve the production efficiency of the problem becomes more prominent. The gelation process of common silica sol mainly depends on the dehydration and drying of silica sol, which takes longer time than the gelation of chemical hardening ethyl silicate. Ethyl silicate shell using ammonia dry each layer can be completed in 2h, and the final hardening of silica sol generally takes more than 12h, for some deep holes and other difficult to dry parts of the need for a longer time. At the same time, because the Investment Casting shell needs to be made in layers, each layer needs to be fully dried, to ensure that the lower shell immersion coating will not cause the problem of remelting off, and immersion coating itself, water will be immersed in the dried shell, resulting in a long overall drying cycle. It is a schematic diagram of the production cycle of silica sol shell investment casting under general conditions. As can be seen from the figure, shell making time accounts for more than 50% of the whole casting production cycle. To shorten the delivery time and shell making cycle is the core of the problem. The key factors to shorten the shell-making period can be divided into two aspects: internal cause and external cause. The main internal cause is the characteristics of the binder, and the external cause is the drying condition. Silica Sol Casting industry in China is developing rapidly and its application is also very extensive. Tianhui Machine Co.,Ltd , https://www.thcastings.com