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Selection of lubrication mode of SEMRI rolling bearings
[来源:天津赛美瑞轴承贸易有限公司]    [作者:管理员]    [日期:2015-10-10 14:37]    [热度:]
SEMRI rolling bearings commonly used in the lubrication of oil and grease two. When the circumferential velocity is less than 4-5m/s, or the car can not use lubricating parts, are lubricated by grease. The advantage of grease lubrication is that the structure is simple, the grease is not easy to lose, the temperature has little effect, and a grease can be used for a long time.
The advantages of the lubrication oil lubrication is small friction resistance, and can heat, mainly for high speed and working environment temperature higher bearing. Lubricating oil grades to chosen in accordance with the requirements of the car manual, and car maintenance cycle timely replacement, release into the old oil after after cleaning of the agency, together with new oil, gas should be marking shall be added to, or and gas export flush (as the vehicle specific structure, requirements), not more.
SEMRI bearing is a kind of important mechanical components, the performance of a mechanical equipment can be fully played out to depend on the lubrication of the bearing is appropriate, it can be said that lubrication is necessary to ensure the normal operation of the bearing, it plays an important role in improving the bearing capacity and service life. No matter what kind of lubrication, lubrication in the bearing can play the following role:
(1) reduce the friction between metals and slow down the wear.
(2) the formation of oil film increases the contact area and reduces the contact stress.
(3) to ensure that the bearing can be in high frequency contact stress, long time to normal operation, to extend the fatigue life,
(4) eliminating the friction heat, reducing the temperature of the bearing, and preventing the burn.
(5) dust, rust, corrosion prevention.
Therefore, the proper lubrication of the German SEMRI bearings are very important for the normal operation. Bearing lubrication design content mainly includes: the reasonable lubrication method determined, correct selection of lubricant, lubricant dosage of quantitative juice and oil change period determined.
Rolling bearing lubrication generally can be divided into three major categories, which are based on the use of lubricants, oil, grease and solid lubrication.
Oil lubrication has a wider range of temperature than other lubrication, and more suitable for high speed and high load conditions. At the same time, as a result of oil lubrication also has equipment maintenance and lubricant replacement convenient, system friction pair, such as gear can also be lubricated at the same time, so far, SEMRI bearings use oil lubrication is the most common.
Grease with sealing device is simple, low maintenance cost and grease cost low, is commonly used in the low-speed, medium speed, the temperature in the operation of the bearing. Especially in recent years, the advent of anti - wear additives, improve the grease lubrication performance, so that grease lubrication has been more widely used.
If the use of oil and grease can not meet the requirements of the bearing lubrication conditions, or can not meet the specific working conditions, you can use the solid lubricant, or try to improve the lubrication performance of the bearing.
Bearing the cause of the noise is more complex, one of the bearing inner, outer ring with surface wear. Because of this wear, damage to the bearing and shell, rolling bearing and shaft, resulting in the relationship between the axis, the axis deviates from the correct position, in the shaft at high speed when the abnormal sound. When the bearing fatigue, its surface metal peeling, also can make the bearing radial clearance increases produce abnormal sound.
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