How to extend the service life of precision angular contact ball bearings

Sep 23, 2019

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The precision angular contact ball bearing structure is reasonable and advanced, so that it will have a long angular contact ball bearing life. Bearings are manufactured through multiple processes such as forging, heat treatment, turning, grinding and assembly. The rationality, advancement and stability of each processing technology will also affect the life of the bearing.


1. Pay attention to the installation of the bearing

Whether the bearing is installed correctly affects accuracy, life and performance. Therefore, the design and assembly department should fully study the installation of bearing products. I hope to install according to the operating standards. The items of the job standard are usually as follows:

(1) Cleaning bearings and bearing related components.

(2) Check the size and finishing of the associated parts.

(3) Installation.

(4) Check after installing the bearing.

(5) Supply lubricant. Carefully do the five steps of bearing installation


2. Alignment, straightening

After the precision angular contact ball bearings have been installed, alignment may result in additional loads, friction and vibration of the bearings if not carefully aligned. These may accelerate fatigue and reduce the service life of bearing products and may damage the life of other machine parts. In addition, increased vibration and friction may greatly increase energy consumption and premature risk of loss.


3. Basic condition monitoring

During use, the basic external conditions of the bearing operation are often monitored, such as temperature, vibration and noise measurements. Wuxi Erxuan pointed out that these regular inspections will identify potential problems early and will prevent unexpected machine suspensions, enabling production plans, increased plant productivity and rates.


4. Relubrication

In operation, precision angular contact ball bearings require proper relubrication to perfect its performance. Lubrication of bearing products is divided into grease lubrication and oil lubrication. In order to make the bearing products function well, first, select the lubrication method that suits the conditions of use and the purpose of use. Lubricity of oil lubrication predominates if only lubrication is considered. However, grease lubrication can simplify the structure around the bearing.


When disassembling the lower bearing for inspection, first record the appearance of the bearing, confirm the residual amount of the lubricant, and then wash the bearing after sampling the lubricant for inspection. As a cleaning agent, gasoline and kerosene are commonly used. The cleaning of the removed bearings is divided into coarse cleaning and fine cleaning. They are placed in the container respectively, and the metal mesh bottom is placed first so that the bearing does not directly contact the container. In rough cleaning, if the bearing is rotated with dirt, it will damage the rolling surface of the tapered roller bearing and should be noted. In the rough cleaning oil, use a brush to remove the grease and the adhesive. After it is almost clean, it is transferred to the fine wash. Fine washing is to carefully rotate the bearing while rotating it in the cleaning oil. In addition, the cleaning oil should always be kept clean.


When the angular contact ball bearing equipment is regularly inspected, operated, and the bearings removed during the replacement of the peripheral parts are stopped, it is necessary to determine whether the secondary bearing parts can be reused and the operation status is better or worse. In order to clarify and check the remaining amount of the visited lubricant, the lower bearing is cleaned well after sampling.


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