Should be cleaned and dried with kerosene or gasoline before use, and to ensure that the bearings have good lubricity, the bearings generally use grease, oil can also be used for lubrication. When using grease lubrication, grease with high quality such as no impurities, rust prevention, oxidation resistance, extreme pressure should be selected. The grease filling amount is 30% to 60% of the volume of the bearing and the bearing box, and should not be excessive.

The machining quality of the mating surface of the shaft and the housing, the groove of the shoulder, the end surface and the connecting surface should be carefully checked. All mating surfaces must be carefully cleaned and deburred, and the unprocessed surface of the casting must be cleaned of residual molding sand.

installing

Make sure that the small cone angles face each other during installation. If you only receive axial force in one direction and no radial force, then you use thrust bearings. If this type of bearing is installed in pairs, this installation method must be used, otherwise additional load will be added. Such bearings must have clearance adjustment devices, such as adjustments using threads and gaskets. Because this kind of bearing mainly bears heavy load, and is often accompanied by alternating load, it is easy to produce clearance. If it cannot be adjusted in time, it will not only affect the entire machine, but also quickly damage the bearing itself.

In the case of small interference, the end face of the bearing ring can be pressed with a sleeve at normal temperature, the sleeve can be beaten with a hoe, and the ring can be pressed in evenly through the sleeve. If installed in large quantities, a hydraulic press can be used. When pressing in, make sure that the end face of the outer ring and the end face of the housing shoulder, and the end face of the inner ring and the end face of the shaft shoulder are tight. No gap is allowed.

In the case of large interference, it can be installed by oil bath heating or induction heating bearing method. The heating temperature range is 80 ℃ -100 ℃, and the maximum cannot exceed 120 ℃. At the same time, nuts or other appropriate methods should be used to tighten the bearing, so as to prevent the bearing from shrinking in the width direction and causing a gap between the collar and the shaft shoulder after cooling.

For double-row tapered roller bearings and pump shaft coupling bearings, Luoyang Shiteng bearings have been adjusted for clearance at the factory and need not be adjusted during installation.

After installation

After the assembly is completed, a rotation test should be performed. First, rotate the shaft or the bearing box by hand. If there is no abnormality, use the power to perform no-load, low-speed operation, and then gradually increase the rotation speed and load according to the operation. If an abnormality is found, the operation should be stopped and checked. Do not use until the running test is normal.