The main purpose of bolt roller bearing and precautions for installation and use

The main purpose of the bolted roller bearing and the precautions for installation and use The bolted roller bearing is designed to withstand heavy loads. At the same width, compared with traditional caged bearings, this type of bearing has high load carrying capacity, small radial section, which can save space, but the speed is relatively low. Bolted roller bearings have a lubrication groove and lubrication holes on the outer ring. 1. The installation of the bearing must be carried out in a dry and clean environment. Before installation, pay attention to the production and processing quality of the mating surface of the shaft and the housing, the end face of the shoulder, the pipe groove and the connecting surface. All mating surfaces must be carefully cleaned and burrs removed, and the unmachined surfaces of castings must be cleaned of molding sand. 2. Before installing the bearing, add gasoline or kerosene to clean and tidy, use it after drying, and ensure good lubrication. The bearing is generally lubricated with grease or oil. When selecting grease for lubrication, grease with no impurities, anti-oxidation, anti-rust treatment, pressure and other performance properties should be selected. The grease filling amount is 30%-60% of the bearing and bearing housing capacity, which is not suitable for too much. The double-row tapered roller bearing with sealed structure and the water pump shaft bearing have been filled with grease and can be used directly by customers without cleaning. 3. When installing the bearing, be sure to release equal pressure on the circle of the end face of the ferrule, and press the ferrule into it. Do not directly hit the end face of the bearing with tools such as a hammer to prevent damage to the bearing. In the case of small interference, the end face of the bearing ring can be pressed with a sleeve at room temperature, and the sleeve can be tapped with a hammer to press the ring in a balanced manner according to the sleeve. If a large number of installations, the optional hydraulic press. When pressing in, make sure that the end face of the outer ring and the end face of the shoulder of the casing, and the end face of the inner hole and the end face of the shaft shoulder are clamped, and no gap is allowed. 4. When the interference is large, oil bath heating or sensor heating bearing can be used for installation. The heating temperature range is 80℃-100℃, and can not exceed 120℃. In addition, the bearing should be tightened with nuts or other appropriate methods to avoid the width and azimuth of the bearing from shrinking after cooling, which will cause a gap between the ring and the shaft shoulder. 5. The clearance of the single-row tapered roller bearing should be adjusted. The clearance value should be actually clarified according to different working conditions and the size of the interference. Tests should be conducted to clarify. The double-row tapered roller bearing and the water pump shaft bearing have already adjusted the clearance in the original factory, and do not need to be adjusted during installation. 6. After the bearing is installed, a rotation test should be carried out. First, it is used to rotate the shaft or bearing box. If there is no abnormality, it will be run with power without load and at low speed, and then gradually increase the rotation speed and load according to the operating conditions, and check the noise, vibration and If the temperature rises and an abnormality is found, the operation should be terminated and checked. It can be delivered only after the running test is normal.

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