First, the impact of vibration on bearings

In ordinary use, vibration damage to bearings is quite sensitive, spalling, indentation, corrosion, cracks, wear and so on will be reflected in the bearing vibration measurement. Therefore, the magnitude of vibration can be measured through the use of special bearing vibration measuring instruments (frequency analysers, etc.), and the specifics of the abnormality cannot be deduced from the frequency score.

The measured values vary depending on the conditions of use of the bearing or the location of the sensor installation, etc., so it is necessary to analyse and compare the measured values of each machine beforehand to determine the criteria for judgement.

Influence of temperature on bearings

High temperatures are often used to indicate that the bearing is in an abnormal condition. High temperatures are also harmful to the bearing lubricant. Sometimes bearing overheating can be attributed to the bearing lubricant. If the bearing in more than 125 ℃ temperature for a long time will reduce the bearing life. Causes of high bearing temperatures include: insufficient or excessive lubrication, lubrication. Contained within the impurities, load is too large, bearing loss ring, clearance is insufficient, and oil seals produce high friction and so on.

In the process of using the bearing is easy to appear the phenomenon of temperature rise. When the bearing temperature rises, the first to determine whether the misoperation, such as really high, should do the following when the operation, and then put into use.

Manage:

1, check the cooling water pressure, water flow and piping system is normal. If the water pressure is low may be the filter clogging, can not be dealt with in time, can be stopped to deal with, when confirmed to be able to work 2, should check the governor oil pressure, if the oil pressure is low may lead to the cooling water hydraulic valve closure.

3、Check whether there is a noise in the bearing, and detect whether there is any abnormality in the bearing pendulum.

4, take oil samples to observe whether there is a change in oil colour, and carry out laboratory tests to see whether there is deterioration. If the deterioration is confirmed, the machine should be stopped to replace the new oil.

5, check whether the oil level is normal, if not normal, check whether the oil tank drain valve is closed. If it has been closed tightly, the oil should be replenished, if the sealing gasket oil seepage, should be shut down to deal with.

Vibration damage to bearings can be said to be quite sensitive, spalling, indentation, corrosion, cracks, wear and so on will be reflected in the bearing vibration measurement. Therefore, through the use of special bearing vibration measurement device (frequency analyser, etc.) can measure the size of the vibration, through the frequency score can not be inferred from the specific circumstances of the abnormality. The measured values vary depending on the conditions of use of the bearing or the location of the sensor installation, etc., so it is necessary to analyse and compare the measured values of each machine beforehand to determine the criteria for judgement.

Moving on to the effect of temperature on bearings, high temperatures are often used to indicate that a bearing is in an abnormal condition. High temperatures are also detrimental to the bearing lubricant. Sometimes bearing overheating can be attributed to the bearing lubricant. If the temperature exceeds 125 ℃ for a long period of continuous rotation will reduce the bearing life. Causes of high bearing temperatures include: insufficient or excessive lubrication, lubricant. The lubricant contains impurities, excessive loads, bearing loss rings, insufficient clearance, and high friction from oil seals.

Therefore, continuous monitoring of the bearing temperature is necessary, whether it is to measure the bearing itself or other important parts. If the operating conditions remain unchanged, any change in temperature may indicate a failure.

Regular measurement of bearing temperatures can be achieved with the aid of thermometers, such as digital thermometers, which can accurately measure bearing temperatures and display them in °C or Fahrenheit units. Important bearings, meaning that when they are damaged, they can cause equipment downtime, so these bearings should be fitted with temperature detectors.