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Analysis of common temperature and vibration issues of WXING ball screw bearings

Analysis of common temperature and vibration issues of WXING ball screw bearings


If the WXING bearings are well lubricated and properly kept out debris and moisture, the oil seal should not be worn. However, it is best to check the bearings when the bearing housing is opened and check the oil seal periodically. Check the oil seal near the ball screw bearing To ensure that they are sufficient to prevent hot liquid or corrosive liquid or gas from penetrating into the bearing along the shaft, the oil seal should be replaced as soon as possible if it is worn.

High temperature often indicates that the bearing has been in an abnormal condition. High temperature is also harmful to the lubricant in the bearing. Sometimes the overheating of the bearing can be attributed to the lubricant of the bearing. If the INA bearing is operated at a temperature exceeding 125 degrees Celsius for a long time, it will reduce the bearing life.

Bearing vibration is very sensitive to bearing damage, such as peeling, indentation, rust, cracks, wear, etc., will be reflected in the bearing vibration measurement, so the vibration can be measured by using a special bearing vibration measuring device (frequency analyzer, etc.) The size of the abnormality cannot be inferred from the frequency. The measured value differs depending on the service conditions of the bearing or the installation position of the sensor, etc., so it is necessary to analyze and compare the measured value of each machine in advance to determine the judgment standard.

The temperature of the bearing can generally be inferred from the temperature outside the bearing chamber. If the temperature of the outer ring of the bearing can be directly measured through the oil hole, it is more appropriate.

Usually, the temperature of the ball screw bearing starts to rise slowly with the operation of the WXING bearing, and reaches a stable state after 1-2 hours. The normal temperature of the bearing varies with the heat capacity, heat dissipation, speed and load of the machine. If the lubricating and mounting parts are suitable, the bearing temperature will rise sharply and abnormally high temperature will appear. At this time, the operation must be stopped and necessary preventive measures must be taken.

The thermal sensor can be used to monitor the working temperature of the bearing at any time, and when the temperature exceeds the specified value, it can automatically alarm or stop to prevent the combustion shaft accident.

High temperature often indicates that WXING bearings are in abnormal conditions. High temperatures are also detrimental to the lubricant of the ball screw bearings. Sometimes bearing overheating can be attributed to the lubricant of the bearing. If the bearing is continuously rotated at a temperature exceeding 125°C for a long time, the life of the bearing will be reduced. Causes of high temperature bearings include: insufficient lubrication or excessive lubrication, lubricant. Contains impurities, excessive load, bearing ring damage, insufficient clearance, high friction caused by oil seal, etc.

The causes of WXING bearings include: insufficient lubrication or excessive lubrication, magazines in the lubricant, excessive load, bearing damage, insufficient clearance, and high temperature friction caused by oil seals, etc.

Bearing rolling elements and inner and outer ring raceway surfaces are subjected to periodic pulsating loads, resulting in periodic contact stress. When the number of stress cycles reaches a certain value, the rolling elements or inner and outer ring raceway working surfaces Fatigue spalling will occur. If the load of the bearing is too large, the fatigue will be aggravated. In addition, if the bearing is installed incorrectly and the shaft is bent, the phenomenon of raceway spalling will also occur. The fatigue spalling of the bearing raceway will reduce the running accuracy of the shaft and cause the mechanism to vibrate. and noise

Burned bearings have tempered burns on the raceways and rolling elements. The causes of burns are generally insufficient lubrication, the quality of lubricating oil does not meet the requirements or deteriorates, and the bearing assembly is too tight, etc.

There are uneven pits on the contact surface between the raceway and the roller of the WXING bearing, indicating that the ball screw bearing produces plastic deformation. The reason is that the local stress on the working surface of the bearing exceeds that of the material under a large static load or impact load. Yield limit, which generally occurs on low-speed rotating bearings

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