What should be paid attention to before installing 68 Series bearings

In the mechanical transmission system, the 68 series bearings are the core load-bearing and transmission components. Their correct installation is of great significance to the stability of the equipment and the service life of the bearings. Therefore, before installing the 68 series bearings, a series of professional requirements must be followed to ensure that the bearings can fully exert their performance.

Preparation of the installation environment
The environment for installing the 68 series bearings should be selected in a dry and dust-free room to avoid metal processing or other equipment that may generate metal debris and dust affecting the installation quality. Since the bearings are high-precision parts, any intrusion of dust and impurities may destroy the integrity of the lubricating oil film, thereby causing wear, fatigue and rust of the bearings. In addition, the temperature and humidity of the environment should be kept within an appropriate range to prevent deformation or expansion of the bearings due to temperature changes.

Check the fit of the bearings with the shaft and the bearing seat
Before installation, the size, shape and processing quality of the bearings, shafts and bearing seats must be checked in detail to ensure that they meet the requirements of the design drawings. Special attention should be paid to the inner diameter, outer diameter, height of the bearings and the matching surfaces with the shaft and the bearing seat, which must be strictly measured to ensure that the bearings can be correctly installed on the shaft and the bearing seat can be accurately fixed on the machine. At the same time, the geometric tolerances should be checked to see if they meet the standards. If they do not meet the standards, they should be adjusted in time to ensure that the bearings can work normally after installation.

Cleaning and treatment of bearing surfaces
Before installation, it is essential to thoroughly clean the bearings, shafts and bearing seats. This process should include removing surface dirt, iron filings and anti-rust oil. Cleaning can be done with gasoline, kerosene or special cleaning agents. After cleaning, the surface should be thoroughly dried with a dry, clean cloth or compressed air. For general-purpose bearings, the anti-rust oil can be used directly without cleaning; for instrument bearings or high-speed bearings, the self-contained anti-rust oil must be thoroughly removed and a suitable lubricant must be applied.

Lubrication and sealing of bearings
Before installation, it is necessary to properly lubricate the bearings. Lubrication not only reduces the wear and friction of the bearings, but also significantly extends their service life. During the lubrication process, it is necessary to select suitable grease or lubricating oil, and ensure that the bearings and bearing seats are clean to avoid contamination and blockage. At the same time, for bearings that need to be sealed, it is necessary to check the integrity of the seals and ensure that the seals are installed correctly during the installation process to prevent dust, moisture and other impurities from entering the bearing.

Selection and preparation of installation tools
When installing 68 series bearings, appropriate installation tools should be selected. Ideal installation tools should be made of wood or light metal products, kept clean, and avoid directly hitting the bearings with hard tools such as hammers to avoid bearing damage. For bearings with large interference, it is recommended to use a dedicated press or hydraulic press for installation; for bearings that need to be heated for installation, special heating equipment should be used, and the heating temperature and time should be strictly controlled to ensure the installation effect.

Positioning and inspection before installation
Before installation, the bearings need to be accurately positioned. Positioning refers to correctly installing the bearing on the shaft to avoid problems such as position offset or bearing tilt. This step not only affects the accuracy of installation, but is also directly related to the operating stability of the equipment. Therefore, during the positioning process, the installation direction and position of the bearing should be carefully checked to ensure that they are consistent with the design requirements.