1. The bearing must be installed under dry and clean environmental conditions. Before installation, carefully check the machining quality of the mating surface of the shaft and housing, the end face of the shoulder, the groove and the connecting surface. All mating connection surfaces must be carefully cleaned and deburred, and the unprocessed surface of the casting must be cleaned of molding sand.
2. The bearing shall be cleaned with gasoline or kerosene before installation, and used after drying, and good lubrication shall be ensured. The bearing is generally lubricated with grease or oil. When grease lubrication is used, grease with excellent properties such as no impurities, oxidation resistance, rust prevention and extreme pressure shall be selected. The filling amount of lubricating grease is 30% - 60% of the volume of bearing and bearing box, which should not be too much. The double row tapered roller bearing with sealing structure and the shaft connecting bearing of water pump have been filled with grease, which can be directly used by users and can not be cleaned.
3. When installing the bearing, equal pressure must be applied on the circumference of the ferrule end face to press the ferrule in. It is not allowed to directly knock the bearing end face with hammers and other tools to avoid damaging the bearing. The sleeve can be pressed into the bearing ring with a hammer under the condition of small interference at room temperature. If it is installed in large quantities, hydraulic press can be used. When pressing in, ensure that the end face of the outer ring and the end face of the housing shoulder, the end face of the inner ring and the end face of the shaft shoulder are pressed tightly, and there is no gap.
4. When the interference is large, the bearing can be installed by oil bath heating or inductor heating. The heating temperature range is 80 ℃ - 100 ℃, and the maximum temperature cannot exceed 120 ℃. At the same time, the bearing shall be fastened with nuts or other appropriate methods to prevent the bearing from shrinking in the width direction after cooling, resulting in a gap between the ferrule and the shaft shoulder.
5. The clearance shall be adjusted at the end of the installation of single row tapered roller bearing. The clearance value shall be determined according to different working conditions and the interference of the fit. If necessary, it shall be determined by test. The clearance of double row tapered roller bearing and water pump shaft connecting bearing has been adjusted at the factory, so it is not necessary to adjust it during installation.
6. After the bearing is installed, the rotation test shall be carried out. First, it shall be used for the rotating shaft or bearing box. If there is no abnormality, it shall run at no-load and low speed with power, and then gradually increase the rotation speed and load according to the operation, and detect the noise, vibration and temperature rise. If any abnormality is found, the operation shall be stopped and checked. It can be delivered for use only after the operation test is normal