Plain thrust ball bearings mainly bear axial loads in assemblies and are widely used. Although the installation process of thrust bearings is relatively simple, errors often occur during actual maintenance, such as incorrect positioning of the tight and loose rings of the bearing, which results in the bearing losing its function and the shaft collar being rapidly worn. The tight ring is installed on the face of the stationary part, which is an incorrect assembly. The inner ring of the tight ring is a sliding fit with the shaft collar. As the shaft rotates, it drives the tight ring, which then rubs against the face of the stationary part. When subjected to an axial force (Fx), the friction moment exceeds the resistance moment of the fit, causing the tight ring to force the shaft collar to rotate, thereby exacerbating the wear of the shaft collar.

Therefore, the following points should be noted when installing thrust bearings.

(1) Differentiate between the tight and loose rings of the bearing (determined by the bearing inner diameter size, with a difference of 0.1 to 0.5mm in the bore diameter).

(2) Distinguish between static components of the institution (i.e., parts that do not move, primarily referring to assemblies).

(3) Under any circumstances, the loose ring of the bearing should always rest against the end face of the stationary part.