Question

state the characteristics of angular contact ​

Answer 1

Answer:

Characteristics of the Angle of Contact:

The angle of contact is constant for a given liquid-solid pair.

When the angle of contact between the liquid and a solid surface is small (acute), the liquid is said to wet the surface. ...

If the angle of contact is large the surface is not wetted.

Answer 2

Explanation:

The bearing stiffness model is established based on the Hertz contact theory and the hydrodynamic lubrication theory of rolling bearing in this paper, the dynamic characteristics of the angular contact ball bearing and the relationship between the bearing preload, the speed and the stiffness of the angular contact ball bearing is analyzed, as well as the influence of the oil film stiffness on the bearing total stiffness. The results from taking 71924ACD/P4A bearing as an example shows that the preload and the speed have important effect on the stiffness of bearing. By the contrast of two kinds of situations, a conclusion can be drawn that when considering the oil film stiffness,the total stiffness reduces 0-40% than not considering the oil film stiffness.