When the bearing is to continue to use after removal, appropriate disassembly tools should be selected. When removing the interference fit ring, only the tension can be applied to the ring, and the disassembly force is never allowed to be transmitted through the rolling body, otherwise the rolling body and the raceway will be crushed.
The installation of bearings must be carried out under dry and clean environmental conditions. Before installation, carefully check the machining quality of the mating surface of shaft and shell, the end face of convex shoulder, groove and connecting surface.
All mating surfaces must be carefully cleaned and burr removed. The unworked surface of the castings must be sand removed.
Bearings should be cleaned with gasoline or kerosene before installation, and used after drying, and ensure good lubrication. Bearings are generally lubricated with grease, but also can be lubricated with oil. Grease lubrication, should be used without impurities, oxidation, rust, extreme pressure and other superior performance of grease. The filling amount of grease is 30%-60% of the bearing and bearing box volume, not too much. Double row tapered roller bearings with sealed structure and pump shaft bearings have been filled with grease and can be used directly by users, not to be cleaned.
When the bearing is installed, equal pressure must be applied on the circumference of the end face of the ring to press the ring into the bearing. It is not allowed to directly hit the end face of the bearing with the tool of the tis head, so as not to damage the bearing. In the case of small interference, the end face of the bearing ring can be pressed by a sleeve at room temperature, and the sleeve can be beaten by the sleeve to evenly press the ring. If a large number of installation, can be used hydraulic machine. When pressing in, it should be ensured that the outer ring end face and shell shoulder end face, the inner ring end face and shaft shoulder end face are pressed tightly, no clearance is allowed.
When the interference is large, oil bath heating or inductor heating bearing method can be used to install, heating temperature range of 80℃-100℃, the highest can not exceed 120℃. At the same time, the application of nuts or other appropriate methods to tighten the bearing, in order to prevent the bearing cooling after the width direction of contraction and the gap between the ring and the shaft shoulder.
Clearance adjustment should be carried out at the end of installation of single row tapered roller bearings. The clearance value should be determined according to different operating conditions and the size of interference. If necessary, tests should be carried out to determine. Double row tapered roller bearings and water pump shaft bearings have been adjusted at the factory clearance, installation need not be adjusted.
Bearing installation should be carried out after the rotation test, first used for rotating shaft or bearing box, if there is no abnormal, then no load, low speed operation by power, and then depending on the operation situation gradually increase the rotation speed and load, and detect noise, vibration and temperature rise, abnormal, should stop running and check. It can be used after normal operation test
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