Installation specification process of vibrating screen bearing Whether the bearing is installed correctly affects the accuracy, service life and performance. Therefore, the design and assembly department should fully study the installation of vibrating screen bearing.
(1) Clean the bearing and bearing connection part
(2) Check the size and finish machining of related parts
(3) . installation
(4) Inspection after bearing installation
(5) . supply lubricant
It is hoped that the bearing packaging will be opened just before the installation of slurry. General grease lubrication, do not clean, directly fill with grease. For lubrication with lubricating oil, it is not necessary to clean in general. However, bearings for instrument or high-speed use shall be cleaned with clean oil to remove the antirust agent coated on the bearings. The bearing with rust inhibitor removed is easy to rust, so it can not be placed regardless. Moreover, Vibrating Screen Bearing bearings sealed with grease can be used directly without cleaning.
The installation method of bearing varies according to the bearing structure, fit and conditions. Generally, the inner ring needs interference fit because it is mostly shaft rotation. Vibrating Screen Bearing Cylindrical bore bearings are usually pressed in with a press or hot installed. In the case of taper hole, it can be directly installed on the taper shaft or installed with sleeve.
When it is installed on the shell, there is usually more clearance fit, and the outer ring has interference. It is usually pressed in by a press, or there is a cold shrinkage fit method for installation after cooling. When dry ice is used as coolant and cold shrinkage is used for installation, the moisture in the air will condense on the surface of the bearing. Therefore, appropriate anti rust measures are required.
(1) Press in method with press
Press in method is widely used for small bearings. Put the cushion block into the inner ring and press it quietly with a press until the inner ring contacts the shaft shoulder closely. Vibrating Screen Bearing During operation, oil the mating surface in advance. When it is absolutely necessary to knock the installation with a hammer, cushion blocks shall be placed on the inner ring for operation. This practice has repeatedly become the reason for bearing operation. Vibrating Screen Bearing Therefore, it is limited to the case of small interference, and can not be used for large interference, medium and large bearings.
For non separable bearings such as deep groove ball bearings, when the inner ring and outer ring need interference installation, pad them with cushion blocks, and press the inner ring and periphery together with screw or oil pressure. Vibrating Screen Bearing The outer ring of self-aligning ball bearing is easy to tilt. Even if it is not an interference fit, Vibrating Screen Bearing it is also padded with cushion blocks for installation.
For separate bearings such as cylindrical roller bearings and tapered roller bearings, the inner and outer rings can be installed on the shaft and shell respectively. When combining the installed inner rings and periphery, the key is to close them stably so that the centers of the two do not deviate, and pressing them reluctantly Vibrating Screen Bearing will cause jamming on the raceway surface.
(2) Hot charging method
Large vibrating screen bearing requires a lot of force when pressing, so it is difficult to press in. Therefore, the hot installation method of heating the bearing in oil to expand it and then installing it on the shaft is widely used. Using this method, the operation can be completed in a short time without adding improper force to the bearing.
Tapered hole bearing is to directly fix the inner ring on the tapered shaft, or install it on the cylindrical shaft with tightening sleeve and disassembly sleeve. The large self-aligning bearing of vibrating screen is mostly installed by oil pressure.
After the installation of shale shaker bearing, in order to check whether the installation is correct, operation inspection shall be carried out. Small machinery can rotate by hand to confirm whether it rotates smoothly. The inspection items include poor operation caused by foreign matters, scars and indentation, uneven rotating torque caused by poor installation and poor processing of mounting base, large torque caused by too small clearance, installation error and sealing friction, etc.
Since large machinery cannot rotate manually, turn off the power immediately after no-load start, conduct inertial operation, check whether there is vibration, sound, contact of rotating parts, etc., and enter the power operation after confirming that there is no abnormality. Power operation starts from no-load low speed and slowly increases to the rated operation under the specified conditions. During the test run, the inspection items are whether there is abnormal sound, bearing temperature transfer, lubricant leakage and discoloration, etc.
The temperature inspection of vibrating screen bearing is generally inferred from the appearance of the shell. However, it is more accurate to directly measure the temperature of the bearing outer ring by using the oil hole. The bearing temperature starts to rise gradually during operation. If there is no abnormality, it is usually stable after 1 ~ 2 hours. If the bearing temperature rises sharply due to poor bearing or installation. In the case of high-speed rotation, the wrong selection of bearing lubrication method is also the reason.