For motor products, we will pay more attention to the components that directly affect the mechanical performance level of the motor, such as the motor stator, rotor, shaft, frame and end cover, and thus ignore some seemingly unimportant small parts. The unimportant small parts in everyone's eyes directly affect and determine the overall performance level of the motor. In this paper, we briefly explain the influence of the inner and outer bearing covers on the performance of the motor.

From the analysis of the basic functions of the bearing cap, the bearing cap, the bearing, the shaft and the end cap constitute the bearing system of the motor. The conformity of the radial dimension of the bearing cap is directly related to the coaxiality of the bearing system. When the diameter of the bearing cap is small , or when the spigot is not concentric with the shaft hole, it may cause the motor shaft to rub against the bearing cover. The very important function of the bearing cover is to ensure the compliance of the axial dimension chain of the motor bearing. The height of the bearing cover notch is related to the axial positioning of the motor bearing. When the height of the bearing cap notch is lower than the specified requirement, it will cause Unexpected axial movement occurs in the rotor part of the motor; when the height of the spigot is higher than the specified requirement, on the one hand, the matching relationship of the motor parts cannot be guaranteed, and on the other hand, problems such as bearing heating may be caused due to the mismatching clearance of the parts. .

In the actual design and production process of the motor, many motor factories often adjust the size of the bearing cap to meet the quality control of the whole machine, which will also lead to the diversification of the size of the bearing cap, which is not conducive to the overall quality of the parts. Quality control: From the perspective of quality management and control, we prefer to control the inner and outer bearing covers as standard parts, and the final demand for the matching of motor parts can be guaranteed through the length adjustment of the bearing chamber of the end cover, which can greatly simplify the bearing inner and outer covers. category, which greatly promotes the organization and management of motor production.

From the perspective of parts processing quality control, the processing and production organization of the inner and outer bearing covers lead to the instability of its quality control to varying degrees, thus affecting the overall quality of the motor to varying degrees, while high-quality The motor factory has better quality control in this aspect, which is also a further manifestation of the quality of the motor.