Every modern movement necessarily contains various rotational elements. Since parts of the mechanism are subject to constant friction during prolonged rotation, it is imperative to use bearings to prevent damage to the structure and ensure smoother operation. Bearings of various sizes and shapes, such as those presented here - http://impod.ru/kupit-podshipniki-skf/ , can be used both in household appliances and on large production mechanisms.
What are the types of bearings
Bearings are distinguished by the type of material from which they are made, by the peculiarities of the internal structure, as well as by the peculiarities of their functioning in the mechanism. Most modern bearings are manufactured from different types of hardened steel. Bearings used in electrical engineering are manufactured from ceramic materials. Depending on the structure and internal features, a distinction is made between plain and rolling bearings. When using a bearing of the first type, contact between the surfaces is ensured by sliding them (hence the name). A rolling bearing works by rolling elements, which can be in the form of rollers or balls.
What characteristics are important when choosing a bearing
Plain and rolling bearings have different physical properties due to the peculiarities of their structure. Plain bearings can be used in mechanisms with a high rotation speed, but they have a loss of efficiency due to constant friction of both contacting surfaces. Rolling bearings are cheaper, but have a narrower range of applications due to their instability to high loads and speeds.