What is ball rollers heavy duty?

Ball rollers heavy duty means the load that the bearing receives during use, including lateral load and longitudinal load.

The bearing supports the rotating shaft during use. The shaft may be subjected to radial or axial loads. Theseball rollers heavy duty loads will act on the bearing. For example, the helical gear shaft on the reducer will have an axial load during transmission. Occurs, the bearing at this time will be subjected to axial load.

First of all, understand the definition and difference between the axial and radial directions of the shaft. Axial refers to the direction along the axis of the shaft, and the radial direction is perpendicular to the radial direction of the shaft. Therefore, the axial ball rollers heavy duty of the bearing refers to the load generated in the axial direction of the bearing. Generally speaking, it is the force that pushes the inner ring of the bearing out of the outer ring. The bearing types in descending order of ball rollers heavy duty axial load capacity are: cylindrical roller bearing <ball bearing <tapered roller bearing <end bearing. Among them, cylindrical roller bearings do not bear axial load at all, and end bearings are specially designed to bear axial loads.

The heavy duty capacity of ball rollers when the bearing is at rest is determined by the allowable amount of plastic deformation. Plastic deformation in rolling bearings is inevitable. If the allowable plastic deformation is limited, the static ball rollers heavy duty capacity of the bearing is also very small; if the allowable plastic deformation is large, the pits generated on the raceway will increase the noise and vibration of the bearing during operation , The operation accuracy is reduced, which affects the normal operation of the bearing.

Long-term bearing experience shows that in rolling bearings, the total plastic deformation (plastic deformation of the raceway plus plastic deformation of the rolling element) at the contact point of the rolling element with the largest load and the raceway is less than one ten thousandth of the diameter of the rolling element , Has little effect on the normal operation of imported bearings. The ball rollers heavy duty static load capacity of the bearing determined under this plastic deformation condition is called the static load rating, which is generally represented by C0.

The heavy duty rating of static ball rollers is determined under the assumed load conditions. For radial bearings, the static load rating refers to the radial load. For centripetal thrust bearings (angular contact ball bearings), it means that the half-round raceway of the bearing is subjected to The radial component of the loaded load, for thrust bearings, refers to the central axial load.

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