Structural characteristics of rolling bearings imported from FAG
German FAG bearings (especially rolling bearings) are divided into two kinds of structure with cage and without cage. Among them, large-scale FAG bearings are generally required to withstand larger loads, often without a cage, but filled with rolling elements between the inner and outer raceways. And most of the small and medium rolling bearings are with cages.
In the processing process of FAG bearings, how are the outer ring, inner ring, rolling element and cage of the bearing assembled together? To put it simply, first put the inner and outer rings of the imported FAG bearing, put the inner ring aside, then put the rolling elements (set aside), then adjust the position of the rolling elements, and finally, put the cage. Now everyone knows that the cage is also involved in the processing of FAG bearings. So what is the main function of the FAG bearing cage?
The role of the cage is:
1. Guide and drive the rolling elements to roll on the correct raceway;
2. The cage separates the rolling elements at equal distances, and the FAG bearings are evenly distributed on the circumference of the raceway to prevent collision and friction between the rolling elements during work;
3. In the separated FAG imported bearings, the rolling elements and a ferrule are combined to prevent the rolling elements from falling off.
The bearing is called a window, which is used to isolate and guide the rolling elements. The pocket gap allows the cage to have a certain amount of movement in the radial and axial directions. The total amount of movement in the radial direction is called the cage clearance. The roller cage has a variety of structural types and complex shapes. There are many equidistant pockets on the cage. The pockets have spherical, circular, elliptical, rectangular and toothed shapes. The size is larger than the size of the rolling element. The difference between the two is the pocket gap. Sometimes it is maintained for German FAG bearings. The connecting part between the frame windows is called the lintel, which plays the role of connecting and increasing the strength of the cage.