Full complement cylindrical roller bearings should not be over-lubricated

Full complement bearing.com/cylindrical-roller-bearings.html' target='_blank'>cylindrical roller bearings should not be lubricated excessively. Grease has good adhesion, wear resistance, temperature resistance, rust resistance and lubricity, can improve high temperature oxidation resistance, delay aging, can dissolve carbon deposits, prevent The agglomeration of metal wear debris and oil pollution improves the wear resistance, pressure resistance and erosion resistance of the machine. However, after knowing the motion history of grease in full complement cylindrical roller bearings, we naturally come to a conclusion: the grease in full complement cylindrical roller bearings should not be excessive. Too much grease is not only extravagant, but also useless. The higher the rotational speed of the full complement cylindrical roller bearing, the greater the danger. The greater the amount of grease added, the greater the friction torque. With the same filling amount, the friction torque of the sealed full complement cylindrical roller bearing is greater than that of the open full complement cylindrical roller bearing. The amount of grease replenished is equivalent to 60% of the space volume in the full complement cylindrical roller bearing. After that, the friction torque does not increase significantly. This is because a large part of the grease in the open full complement cylindrical roller bearing has been squeezed out, and the grease in the sealed full complement cylindrical roller bearing has also been lost. With the increase of the grease replenishment amount, the temperature rise of the full complement cylindrical roller bearing increases linearly, and the temperature rise of the sealed full complement cylindrical roller bearing is higher than that of the open full complement cylindrical roller bearing with the same amount of addition. It is generally believed that the amount of grease replenished for sealed rotating full complement cylindrical roller bearings should not exceed about 50% of the inner space. After the expert's test evaluation, the ball full complement cylindrical roller bearing is very suitable at 20% to 30%. Of course, in order to determine a very suitable amount of grease to be added, other factors are sometimes considered. For example, for some open full complement cylindrical roller bearings that work in the case of packing dust or very wet or even exposed to steam, a little more grease can also be added to have a better sealing condition, so that the full complement Cylindrical roller bearings are protected from dust or moisture.

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