How to eliminate the radial clearance of the bearing at the beginning of the sixth

Radial clearance in six-series bearings can be reduced or eliminated by applying axial forces (corrugated washers, springs).

The single row deep groove ball bearing type code is 6, and the deep groove ball bearing mainly bears radial load, but can also bear radial load and axial load at the same time. When it is only subjected to radial loads, the contact angle is zero. When the deep groove ball bearing has a large radial clearance, it has the performance of angular contact bearing, can bear a large axial load, the friction coefficient of the deep groove ball bearing is very small, and the limit speed is also very high.

The radial clearance of a rolling bearing is the amount of movement of one ring from one extreme position to another in the direction of the bearing axis, while the other ring moves from one extreme position to the other, perpendicular to the bearing axis. The correct selection of bearing clearance has a great impact on mechanical operation accuracy, bearing life, friction resistance, temperature rise, vibration and noise. If the selection of the radial bearing clearance is too small, the number of rolling elements bearing the load in the bearing clearance will increase, the contact stress will be reduced, and the operation will be more stable, but the frictional resistance will increase, and the temperature rise will also increase.

On the contrary, the contact stress increases, the vibration is large, the frictional resistance decreases, and the temperature rise is low. Therefore, it is of great significance to select the most appropriate clearance value according to the bearing use conditions. The following main factors must be fully considered when selecting the actual bearing clearance:

1) The tightness of the bearing in the fit with the shaft and housing bore will lead to a change in the clearance value of the bearing. Generally, the clearance value will be reduced after the bearing is installed;

2) During the operation of the bearing, due to the different heat dissipation conditions of the shaft and the shell, the temperature difference between the inner ring and the outer ring will occur, which will lead to the reduction of the clearance value;

3) Due to the difference in the expansion coefficient of the shaft and shell materials, the clearance value will shrink or increase.

The meaning of elimination is not very well understood.

The clearance can be told at the time of selection, such as c1, c2 ...and so on (different brands, different marks).

In addition, it can be adjusted according to the fit of the shaft and bearing housing.

1. Adopt linear bushing and optical axis with higher precision;

2. Increase the number of linear bushings or increase the distance between two linear bushings on the same optical axis;

3. The linear bushing with adjustable clearance is the kind of straight bushing with opening.

The axial clearance is the distance between the inner ring and the outer ring along the axial direction, while the radial clearance is the distance between the inner and outer rings along the radial direction. If the axial clearance is too large, the serial shaft will be sliding, and if the radial clearance is too large, the bore will be swept.

With a feeler gauge?? Single row deep groove ball, you use a feeler gauge to measure the radial swim.

Crack?? The method of measuring the axial clearance and radial clearance of the bearing is mainly to see what type of bearing, and some bearings need special measuring instruments to measure, not to say that they can be measured casually. And there are errors when measuring.

If you suspect that there is a problem with the clearance of the bearing purchased from a regular channel, find their after-sales service and let them measure it for you.

Determine the model and check the bearing catalog. Or it can be measured with a radial axial clearance meter.

The measurement method is selected according to the bearing type.

Do you mean deep groove ball or roller bearings? Or angular contact bearings?

There are many ways to do this, but they are all different.

There are different methods such as using holes or shafts to apply compression and radial gasket compression. It depends on your actual situation.

You can show ** me!

Measured by lead pressure method and feeler gauge method, the radial clearance translation is not marked in the bearing code, the clearance of the bearing is different according to the size of its inner diameter, check the table to determine, in general, the radial clearance of the rolling bearing can not be greater than three thousandths of the inner diameter of the bearing, and the radial clearance of the centripetal short cylindrical bearing cannot be greater than two thousandths of the inner diameter of the bearing.

1) Original clearance: the clearance in the free state before the bearing is installed.

2) Fitting clearance: the clearance after the bearing is installed on the shaft or in the hole, the size of which is determined by the interference, and the fitting clearance is less than the original clearance.

3) Working clearance: Some bearings, due to the characteristics of the structure, the clearance can be determined by adjusting the mutual position of the bearing rings in the process of assembly or use, such as radial thrust ball bearings.

When the motor can shake up and down the shaft, there is an axial clearance, and the shaking distance is the clearance distance. The radial gap is the left and right swaying, and the shaking distance is the gap distance.

Bearing clearance, also known as bearing clearance, the so-called bearing clearance, refers to the amount of movement when the bearing is not installed in the shaft or bearing housing, one side of the inner ring or outer ring is fixed, and then the unfixed side is moved radially or axially. According to the direction of movement, it can be divided into radial clearance and axial clearance.