NSK bearing life cycle extension method

      In order to make NSK bearing life longer, we will share with you the NSK bearing life cycle extension method, I hope to help everyone.

      1, NSK bearing installation
      (For the installation method of imported bearings, please refer to the article "How to install NSK imported bearings".)

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

      (1) cleaning the bearing and bearing related components;
      (2) Check the size and finishing of the connected components;
      (3) installation;
      (4) Inspection after installing the bearing;
      (5) Supply lubricant.

      2, alignment, straightening

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

      3. Basic condition monitoring

      During use, the basic external conditions of the bearing operation are often monitored, such as temperature, vibration and noise measurements. These regular inspections will identify potential problems early and will prevent unexpected machine stops, enabling production plans, increased plant productivity and efficiency.

      4, relubrication

      During operation, NSK bearings require proper relubrication to perfect its performance. The method of bearing lubrication is divided into grease lubrication and oil lubrication. In order to make the bearing function well, first, choose a 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 has the advantage of simplifying the structure around the bearing.

      5, remove

      When the NSK bearing will reach its end of life, it should be replaced. Although the bearing can no longer be used, correctly removing the original bearing and replacing the new bearing in time can promote the service life of the new bearing. First, the use of a suitable removal tool will help prevent damage to other machine components. Second, improperly removed technology can be hazardous to the operator.

For more information and purchase please visit: https://www.supplyforever.com

The essence of NSK bearing noise

      For the use of bearings, it is very common to generate noise. Even the low-noise bearings in NSK bearings have the same situation. So why is there noise? Today I will introduce the essence to you.
      (1) Bearing track sound and its control method Rolling sound is a kind of slippery continuous sound that the rolling element rolls on the raceway surface when the bearing is running. It is the unique basic sound that all rolling bearings will produce. . The general NSK bearing sound is the rolling sound plus other sounds. The ball bearing's raceway sound is irregular, the frequency is above 1000Hz, its main frequency does not change with the speed, but its total sound pressure level increases with the increase of the speed. For bearings with large rolling sounds, the sound pressure level of the raceway sound decreases with the increase of viscosity; while for bearings with small raceway sound, the sound pressure level decreases when the viscosity increases to about 20 mm2/s or more. For the increase. The greater the rigidity of the bearing housing, the lower the total sound pressure level of the raceway sound. If the radial clearance is too small, the total sound pressure level and main frequency of the raceway sound will increase sharply as the radial clearance decreases. The method of controlling the rolling sound is to select a low-noise bearing, that is, a bearing with a small waviness, and carefully select the conditions of use. The raceway sound often affects the noise of the entire machine, and reducing the raceway sound can reduce the noise of the entire machine.
       (2) Impact sound of rolling element and its control method When the larger type of ball bearing or cylindrical roller bearing runs at low speed under pure radial load, the rolling element in the non-load area will be small due to the small centrifugal force of the rolling element. Noise is generated by impacting the cage or raceway. But as the speed increases, the sound will disappear. The control methods for the impact sound of the rolling element are: appropriately reducing the radial clearance, and using a bearing having a reasonable structure and a flexible material.
      (3) The rolling noise of NSK imported bearings and its control method The rolling sound is the harsh metal friction sound of cylindrical roller bearings that can occur in all occasions. Most of them occur in the larger type of grease-lubricated bearings. Greases with degraded oil properties are more likely to occur and hardly occur when oil is lubricated. In addition, it is more likely to occur in winter. When subjected to pure radial load, it is easy to occur in the case of large radial clearance, and it is easy to occur in a certain speed range depending on the size of the model, and it will occur continuously. It will appear intermittently. Special processing methods for the outer ring raceway can prevent the occurrence of rolling noise. If necessary, the bearing can be selected, or the radial clearance of the bearing can be appropriately reduced, and the grease with excellent performance and the rigidity of the bearing device can be improved.

For more information and purchase please visit: https://www.supplyforever.com