In fact, when it comes to self-aligning roller bearings, people may have a feeling that is both unfamiliar and familiar, because we all know what self-aligning roller bearings are, but few people have seen the true face of self-aligning roller bearings. But there are many places in our lives that require self-aligning roller bearings, such as wheels. From high-end toy cars to bicycles, motorcycles, and cars, self-aligning roller bearings can be used. Electric fans, exhaust fans, range hoods, and air conditioners are also included. There are many examples to mention, so if there are problems with self-aligning roller bearings in these household appliances, how should we choose the appropriate self-aligning roller bearings? Today, the editor of Noboxuan will introduce to you the correct selection method for self-aligning roller bearings~

1、 Selection of cooperation

The inner and outer diameter dimensions of self-aligning roller bearings are manufactured according to standard tolerances. The degree of fit between the inner ring and shaft, and the outer ring and seat hole of the self-aligning roller bearing can only be achieved by controlling the tolerances of the shaft neck and seat hole. The fit between the inner ring and the shaft of the self-aligning roller bearing adopts a base hole system, while the fit between the outer ring and the seat hole of the self-aligning roller bearing adopts a base shaft system.

Choosing the right fit requires knowing the actual load conditions, operating temperature, and other requirements of the self-aligning roller bearing, which is actually very difficult. Therefore, in most cases, the selection of cooperation is based on the use of precision research.

2、 Load size

The amount of overlap between the ring and the shaft or shell depends on the size of the load. For heavier loads, a larger overlap is used, while for lighter loads, a smaller overlap is used.