Research on the load-bearing capacity change law of spherical roller bearings under different eccentric angles

One, Introduction

Spherical roller bearings are a type of bearing that can withstand radial and axial loads and has a self-aligning function, which can automatically adjust the concentricity with the shaft, reducing vibration and noise. The load-bearing capacity of spherical roller bearings is affected by many factors, among which the eccentric angle is one of the important factors. In practical applications, due to errors in installation or manufacturing processes, the bearing may appear eccentric phenomena. Therefore, studying the load-bearing capacity change law of spherical roller bearings under different eccentric angles is of great significance for improving the bearing's performance and reducing the failure of the bearing.

　　Two, Theoretical basis of the load-bearing capacity of spherical roller bearings

The load-bearing capacity of spherical roller bearings is related to the radial and axial loads, inner diameter, outer diameter, width, and material properties of the bearing. The load-bearing capacity of spherical roller bearings is also related to the eccentric angle. The eccentric angle refers to the radial eccentricity of the inner race relative to the outer race. When the bearing is subjected to load, if the inner race and the outer race of the bearing are eccentric, additional axial force will be generated, thereby affecting the bearing's load-bearing capacity.

Three, The load-bearing capacity change law of spherical roller bearings under different eccentric angles

Under the condition of small eccentric angle, the load-bearing capacity of spherical roller bearings is basically unaffected, because at this time, the eccentric moment of the bearing is small, which has little effect on the bearing's load-bearing capacity.

As the eccentric angle gradually increases, the bearing's load-bearing capacity will gradually decrease. This is because with the increase of the eccentric angle, the eccentric moment of the bearing increases, causing uneven stress distribution inside the bearing, thereby affecting the bearing's load-bearing capacity.

When the eccentric angle reaches a certain value, the bearing's load-bearing capacity will drop sharply, which is because at this time, the stress distribution inside the bearing has become seriously uneven, even exceeding the bearing's load-bearing capacity limit, leading to bearing failure.

Four, Conclusion

The load-bearing capacity of spherical roller bearings shows a clear regularity under different eccentric angles, that is, under the condition of small eccentric angle, the bearing's load-bearing capacity is basically unaffected; as the eccentric angle increases, the bearing's load-bearing capacity gradually decreases, and when the eccentric angle reaches a certain value, the bearing's load-bearing capacity will drop sharply. Therefore, when designing and using spherical roller bearings, it is necessary to avoid the eccentric phenomenon of the bearing as much as possible to improve the bearing's performance and reduce the failure of the bearing.