How to install the three-phase asynchronous motor bearing

Whether the installation of the motor bearing is good or not will directly affect the accuracy, life and performance of the bearing. Therefore, please fully study the bearing installation, that is, in accordance with the operating standards, including the following.

1 cleaning of bearings and related parts, (the grease lubricated bearings and double oil seal or dust cover, sealing ring bearing before installation is no need to clean.

2 check the size and precision of the relevant parts.

3 installation

The installation of the bearing should be according to the bearing structure, size and bearing components with nature, the pressure should be added directly in the tight with the ferrule end face, not through the rolling body pressure transmission, the bearing is arranged generally use the following method:

A. heating

By heating the bearing or bearing base, the use of thermal expansion will be closely related to the installation method of the loose fitting. Is a common and effort to install the method. This method is suitable for a large amount of surplus bearing installation, before installation of the heat the bearing or separation type bearing collar is placed in the tank in the uniform heating 80-100 DEG C, and then from the oil removed as soon as possible onto the spindle, in order to prevent the cooling after the end face of the inner ring and shaft shoulder joint is not tight, the bearing cooling can and axial fastening. When the bearing ring of the bearing ring and the light metal bearing block is close to the bearing block, the heating method of the bearing seat is used to avoid the abrasion of the mating surface.

Heat the oil bearing, from the bottom of a certain distance should be a mesh, or with a hook hanging bearing, bearing can not be into the bottom, to prevent heavy impurities into the bearing or uneven heating, the tank must be a thermometer, strict control of temperature of not more than 100 DEG C, in order to prevent the occurrence of tempering effect, reduce the hardness of the ferrule.

B. press fit

Bearing inner ring and shaft so that the tight fit, and the outer ring of the bearing seat hole is a loose fit, available press the bearing pressure mounted on the shaft, and the shaft with bearing together into the bearing seat hole, pressing in on the end surface of the bearing inner ring, a soft metal pad material assembly sleeve (copper or steel).

Bearing outer ring and bearing bore of the bearing, the inner ring and shaft for the loose fit, the bearing can be pressed into the bearing hole, then the outer diameter of the assembly sleeve should be slightly less than the diameter of the seat hole.

If the bearing ring and a shaft, a seat hole is tight fit, the installation of interior ring and the outer ring to be also pressed into the shaft and housing bore, the assembly sleeve structure should be can also bet on the end face of the tight bearing inner ring and outer ring.

Industry focus

At present, there is no big change in the industrial economy, the steady growth of the industry has a lot of favorable conditions, the second half of the industrial economic operation will stabilize and rebound. In the first half of China's economic growth and employment to maintain a reasonable range, to lay a good foundation for the industry to stabilize; Guangdong, Jiangsu, Shandong and other major provinces and some central and western provinces have maintained a steady growth momentum, the big stable, market expectations and social confidence is relatively stable."

With the steady growth of pre tune fine-tuning policy effect and reform dividend continued to release, positive factors will further increase, the foundation will further consolidate the next phase will be to organize the implementation of the China manufacturing 2025 and Internet + and other power strategy focused on promoting industrial structure continuous optimization and upgrading of economic and sustainable development, and promote stable and healthy development of industrial communications, and strive to achieve the objectives and tasks throughout the year.

According to the introduction, in the implementation of the "Internet +" strategy, the Ministry will focus on promoting the "Internet +" collaborative manufacturing and "Internet +" small and micro enterprise innovation integration and development, for the whole society "Internet +" provide support services for high-speed broadband network infrastructure and software and hardware products.

"Internet +" manufacturing, the Ministry will take intelligent manufacturing as the breakthrough point, and vigorously promote the development of intelligent equipment, organization and implementation of intelligent manufacturing major projects to accelerate the construction of national manufacturing innovation center, building a number of Internet + manufacturing innovation center, experimental verification center and other public service platform, while promoting the construction of important industrial cloud, industrial field data center, promote "made in China" towards the high-end.

To promote public entrepreneurship, innovation and peoples', Ministry of industry will also speed up the advance Internet + small and micro enterprises, strengthen the small and medium-sized enterprise integrated service system construction, improvement of public service platform for small and medium enterprises network, explore using Internet banking to ease the financing difficulties of small and micro enterprises effective way; continue to implement the informationization of small and medium-sized enterprises to promote the project and the "two" fusion capacity upgrade action, perfect "a favorable public service platform, construction of a number of intelligent small business entrepreneurship base, build entrepreneurial innovation ecosystem.