Mounting Of Good Tapered Roller Bearings

February 03, 2023

First, the installation environment of the bearing: the installation of the bearing must be carried out under dry and clean environmental conditions. Before installation, carefully check the processing quality of the mating surface of the shaft and the housing, the end face of the shoulder, the groove and the connection surface. All mating connection surfaces must be carefully cleaned and deburred, and the unprocessed surface of the casting must be cleaned of molding sand.

Secondly, the bearing should be cleaned with gasoline or kerosene before installation, used after drying, and well lubricated. Bearings are generally lubricated with grease or oil. When using grease lubrication, grease with excellent properties such as no impurities, anti-oxidation, anti-rust, and extreme pressure should be selected. The filling amount of grease is 30%-60% of the volume of the bearing and bearing box, and it should not be too much. The double-row tapered roller bearings with sealed structure and the shaft-connected bearings of the water pump have been filled with grease and can be used directly by the user without further cleaning.

When installing the bearing, it is necessary to apply equal pressure on the circumference of the end face of the ferrule to press the ferrule in. Do not directly hit the end face of the bearing with a hammer head or other tools to avoid damage to the bearing. In the case of small interference, the sleeve can be used to press the end face of the bearing ring at room temperature, and the sleeve can be tapped with a hammer head to press the ring evenly through the sleeve. If it is installed in large quantities, a hydraulic press can be used. When pressing in, it should be ensured that the end face of the outer ring and the shoulder end face of the shell, and the end face of the inner ring and the shoulder end face of the shaft are pressed tightly, and no gap is allowed.

Good Tapered Roller Bearings

When the interference is large, the bearing can be installed by oil bath heating or induction heating. The heating temperature range is 80°C-100°C, and the maximum cannot exceed 120°C. At the same time, nuts or other appropriate methods should be used to fasten the bearing to prevent the bearing from shrinking in the width direction after cooling, resulting in a gap between the ring and the shaft shoulder.

The clearance should be adjusted at the end of single row tapered roller bearing installation. The clearance value should be determined specifically according to different operating conditions and the size of the interference fit.

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