Home>Bearing knowledge> Detailed analysis: Judging ntn "angular touch ball bearing" fault damage adjustment pre-tightening method

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Detailed analysis: to determine the ntn "angular touch ball bearing" fault damage adjustment pre-tightening method

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From the shedding, indentation, rust, crack, wear, etc., it will be reflected in the bearing measurement of the bearing; the ntn bearing oscillation is very sensitive to the bearing damage; therefore; the angular touch ball bearing has been selected by a special bearing oscillation measuring device ( The frequency profiler, etc.) can measure the large oscillations. ü De Shi Zhi 豢 豢 鲆 鲆 鲆 5 5 5 5 5 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为 因为Analyze and compare the measured values ​​of each machine to determine the discriminant specification.
The installation of ntn bearings is the fundamental operation in the installation and repair work of the fitter; the adjustment and pre-tightening of the clearance is an important part of the installation of the rolling bearing. The concept of the clearance adjustment and pre-tightening is precisely grasped; and it is correct in the installation work. This method is used to ensure the quality of the bearing installation work.
The clearance of the ntn bearing refers to the maximum amount of movement of the other ferrule in the radial or axial direction when the ferrule is fixed; therefore, the clearance is divided into radial clearance and axial clearance. When the angular contact ball bearing is installed; the clearance should not be too large; it should not be too small. The clearance is too large; the number of rolling bodies that will receive the load will be reduced; the load of the single rolling body will increase; then the rotation accuracy of the bearing will be reduced; Use the number of life, the clearance is too. 崾 Σ Σ υ龃螅徊 υ龃螅徊 攘吭黾 攘吭黾 患 患 患 患 患 患 患 患 患 患 患 因而 因而 因而 因而 因而 因而 因而 因而 因而 因而 因而 因而 因而 因而 因而 因而 因而Gap.
Pre-tightening is when the bearing is installed; an axial force is applied to the inner ring or the outer ring; to eliminate the bearing clearance; and the initial deformation of the rolling body and the inner and outer rings are touched. The pre-tightening can improve the bearing under the working condition. Stiffness and rotation accuracy; bearings with large receiving loads; high requirements for rotational accuracy; most of them operate without clearance or even a small amount of interference; in this case, it is required to tighten the bearings during installation.
The adjustment and pre-tightening of the clearance are generally completed by the appropriate axial displacement of the inner ring to the outer ring. It is not difficult to see from the above technical concept; after the adjustment of the diagonal touch ball bearing clearance; The bearing capacity and rotation accuracy of the bearing; the service life of the bearing is improved. But together, the ntn bearing conflict will be aggravated; the heat generation will increase; so it is necessary to ensure excellent smoothness and heat dissipation when adjusting the clearance or pre-tightening. Or poor smoothness; it will in turn make the bearing wear more weight; the life is reduced. Correctly adjust and preload the bearing clearance; also pay attention to the following problems.

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