INA bearings are often used, oil can reduce the service life of bearings, then how do we remove the oil on the INA bearings? The following teaches you how to easily remove the oil stain on the INA bearing.
Bearings hardened by soft dry oil or rust-proof paste should be immersed in hot oil of 100 ° C ~ 200 ° C, clamp the bearing with pliers, and brush the oil on the bearing with a brush. The soft dry oil or anti-rust paste is melted when heated to 100 ° C ~ 200 ° C, and is easily washed out from the gap of the bearing. Sometimes the bearing is shaken several times in the oil. Oil will also flow away from the gap.
When cleaning the radial spherical bearing of the INA bearing, the ball, the bead frame and the inner ring should be laterally turned out from the outer ring and then immersed in the hot oil. When the short cylindrical roller bearing is cleaned, the roller and the bead frame should also be cleaned. The inner ring and the outer ring are disengaged.
When hot oil is cleaned, the temperature of the oil should not exceed 20 °C.
The temperature of the INA bearing is generally estimated by the temperature outside the bearing. If the oil hole can directly measure the temperature of the outer ring of the INA bearing, it is more suitable.
Usually, the temperature of the INA bearing rises slowly as the bearing starts to run, and reaches a steady 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 lubrication and installation parts are suitable, the bearing temperature will rise sharply and abnormal temperature will occur. At this time, it is necessary to stop the operation and take necessary precautions.
The thermal sensor can be used to monitor the operating temperature of the INA bearing at any time, and automatically alarm or stop the occurrence of a burning shaft accident when the temperature exceeds the specified value.
The high temperature often indicates that the INA bearing is in an abnormal condition. High temperatures are also harmful to the lubricant of the bearing. Sometimes bearing overheating can be attributed to the lubricant of the bearing. Long-term continuous rotation of INA bearings at temperatures above 125 °C will reduce bearing life. Causes of high temperature INA bearings include: insufficient lubrication or excessive lubrication, lubricants. Contains impurities, excessive load, bearing damage, insufficient clearance, and high friction caused by oil seals.
Therefore, it is necessary to continuously monitor the INA bearing temperature. The INA bearing measures the bearing itself or other important parts. If the operating conditions are the same, any temperature change can indicate that a fault has occurred.
The INA bearing temperature can be measured periodically by means of a thermometer, such as a digital thermometer, which accurately measures the bearing temperature and displays it in °C or Fahrenheit. The importance of the bearing means that when it is damaged, it will cause the equipment to stop. Therefore, it is better to install a temperature detector for this type of bearing. Under normal conditions, the INA bearing will naturally rise in temperature after lubrication or relubrication for one to two days.
Generally, a bearing that is used at a working temperature of 150° or more is called a high-temperature bearing. Since the chrome-bearing steel is used at a temperature exceeding 150°, the hardness thereof is drastically lowered and the size is unstable, so that the bearing cannot operate normally. Therefore, for INA bearings operating at 150° to 350°, if the ferrule and rolling element are still made of ordinary high carbon chromium bearing steel, special tempering treatment must be applied to the INA bearing parts, which should generally be higher than Tempering is carried out at a working temperature of 50 °. The bearing steel that has been tempered according to the above requirements can be used normally at the working temperature. However, due to the decrease in hardness after tempering, the life of INA bearings has decreased.
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