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On the correct installation and adjustment of low noise deep groove ball bearing

2021-08-26

Deep groove ball bearing is a widely used rolling bearing. It is characterized by low frictional resistance and high speed. It can be used on parts that bear radial load or a combined load that acts on both radial and axial directions. It can also be used on parts that bear axial load, such as low-power motors, Automobile and tractor gearboxes, machine tool gearboxes, general machines, tools, etc. And bearing noise is inevitable, so many choose low-noise deep groove ball bearings when selecting bearings. Are the installation and adjustment of low-noise deep groove ball bearings the same as the bearings used in normal times? Today, I will share with you about the correct installation and adjustment methods of low-noise deep groove ball bearings.

1. The installation and adjustment of low-noise deep groove ball bearings can also imitate the grouping method of long-life deep groove ball bearings, so that the fit interference is more consistent, and the clearance of deep groove ball bearings is also more consistent. It is possible to take a smaller value within the possible range to ensure that the deformation of the deep groove ball bearing raceway is small, so that the noise caused by the passing of the rolling elements is reduced. Our company also sells various types of TBI rail sliders.

2. If there is an unpleasant screaming noise during operation, it means that the preload of the deep groove ball bearing is too large, and the preload of the deep groove ball bearing is too large, so the preload should be slightly relaxed. If the clearance is too large, the two deep groove ball bearing rings can be slightly offset relative to each other in the axial direction: the clearance is reduced, the axial rigidity is increased, and the noise of the deep groove ball bearing can be reduced.

3. The clearance has a great relationship with noise. The ideal state is that when the imported deep groove ball bearing is in a high temperature state in operation, the clearance value is just zero. The method of judging the excessive clearance is: the static state causes the axial displacement, the reciprocating amplitude is relatively large, and it emits large and heavy noise during operation.

4. Sometimes due to the large working temperature range of the main engine, or the large dispersion of the size of the shaft and the seat hole, it is impossible to obtain a more appropriate clearance in one adjustment. In this case, the outer ring of the deep groove ball bearing can be adjusted. Adopt elastic constant pressure pre-tightening method.

5. The rolling elements will slip or move left and right when they enter the no-load zone, which will increase the noise and cause wear. The small clearance and large axial rigidity can eliminate this phenomenon. However, the clearance cannot be too small to avoid excessive temperature and shortened life.

When we use deep groove ball bearings, we must pay attention to the fact that the bearing load is too small during operation, which will cause sliding between the ball and the raceway, which will become the cause of scratches. Especially large deep groove ball bearings with heavy balls and cages have this tendency. In many cases, bearing corrosion will occur. There are many reasons for bearing corrosion. The following factors are common in our daily life:

1) Due to poor sealing device, moisture, dirt, etc. invade;

2) The bearing has not been used for a long time, the anti-rust period has passed, and the maintenance is lacking.

3) The roughness of the metal surface is relatively large;

4) Contact with corrosive chemical media, the bearing is not cleaned, the surface is stained with dirt, or the bearing is touched with sweaty hands. After the bearing is cleaned, it is not packaged or installed in time, exposed to the air for a long time, and is attacked by air moisture. Contaminate

5) Ambient temperature and humidity and contact with various environmental media; the rust inhibitor fails or the quality does not meet the requirements.