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| News details |
Spherical roller bearings specific installation method is what?
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| Time：2016.11.03 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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Spherical roller bearings according to the roller cross-sectional shape is divided into symmetrical spherical roller and asymmetric spherical roller two different structures, asymmetric spherical roller bearing is an early product, mainly for the host maintenance services, the new design of the host When it is rarely used symmetric spherical roller bearings, the internal structure of a comprehensive improvement of design and parameter optimization, and early production of spherical roller bearings compared to be able to withstand greater axial load, the bearing operating temperature Low, it can adapt to the requirements of higher speed, according to whether the inner ring and the use of the cage can be divided into C-and CA-type two, C-type bearing is characterized by no inner wall and the use of steel Stamping cage, CA-type characteristics of Trane bearing both sides of the inner ring and the use of the car body retaining cage.
In order to improve the bearing lubrication, the staff believe that the user can provide the outer ring with a ring groove and three oil hole of the self-aligning roller bearings to bearing the post-code / W33 said. According to the users requirements can also be supplied with the inner ring of the oil hole of the self-aligning roller bearings, in order to facilitate customer handling and replacement of bearings, but also provide bore with taper of the self-aligning roller bearings, cone taper 1:12 , To post-code for the K said that in order to meet the requirements of special users can also provide the bore taper 1:30 of the bearings, the post-code-named K30. Bearings with tapered bore The bearing can be mounted directly on the tapered journal with a locknut or the bearing can be mounted on a cylindrical journal with an adapter or withdrawal sleeve.
Spherical roller bearings must be installed in dry, clean environment conditions. The mating surfaces of the shaft and the housing, the end face of the shoulder, the groove and the machining quality of the connection surface should be carefully examined prior to installation. All mating surfaces must be carefully cleaned and burrs removed, and the unmachined surfaces of the castings must be in addition to the net sand.
Spherical roller bearings should be installed before using gasoline or kerosene clean, dry and use, and ensure good lubrication, bearings are generally greased, can also be used oil lubrication. The use of grease lubrication, should be used without impurities, anti-oxidation, rust, extreme pressure and other superior performance grease. Grease filled with bearings and bearing box volume of 30% -60%, not too much. Double-row tapered roller bearings with sealed structure and pump shaft bearings are filled with grease, the user can directly use, can not be cleaned.
Spherical roller bearings installed, must be applied to the circumference of the ring face equal pressure, the ring pressed into, not with a hammer and other tools directly hit the bearing face, so as not to damage the bearing. In the case of a smaller amount of interference can be used at room temperature with a sleeve under pressure to suppress the bearing ring face, with the head knocking sleeve, through the sleeve will be pressed into the ring evenly. If the installation of large quantities, can be used hydraulic machine. When pressing in, make sure that the outer ring end face and the shell shoulder end face, the inner ring face and the shaft shoulder face are compacted, and no clearance is allowed.
When the amount of interference is large, can be used oil bath heating or inductive heating method to install the bearings, heating temperature range of 80 ℃ -100 ℃, the maximum can not exceed 120 ℃. At the same time, the use of nuts or other appropriate method to tighten the bearing to prevent the bearing cooling after shrinkage in the width direction and the gap between the collar and shoulder.
Spherical roller bearings should be installed after the rotation test, first for the rotating shaft or bearing box, if not abnormal, then power to no load, low speed operation, and then depending on the operating conditions and gradually increase the rotation speed and load, Vibration and temperature rise, abnormal, should stop running and check. After the normal running test can be delivered.
Spherical roller bearings should be installed to adjust the final clearance. Clearance value should be based on the use of different conditions and the amount of interference with the size of the specific determination. If necessary, should be determined experiment. Bearings and pump shaft bearings have been adjusted in the factory good clearance, no need to adjust the installation.
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