Bearings

Bearings are parts between two bodies that move relative to each other. They support moving parts and reduce movement friction and vibration. They are found in almost all mechanical devices, such as cars.

Bearings can be divided into two main groups: sliding and rolling bearings. The function of plain bearings, such as spherical plain bearings, is based on sliding friction and they withstand both static and dynamic loads. The operation of rolling bearings, such as deep groove ball bearings, is based on the rolling friction generated by balls or rollers. The friction generated in them is small, and they are well suited for high rotational speeds.

The choice of bearings depends on the purpose of use and their requirements. It is important to choose the right bearing type and material so that the bearings work efficiently and last a long time. The type of equipment the bearing is used in and the type of load it must withstand affect the choice of bearing. The size and type of the load should also be taken into account. Heavier loads require stronger and more durable bearings. In some applications, it is also important to consider the damping properties of the bearing, in order to avoid problems caused by noise or vibration, for example.

Bearings are made of various materials, such as steel, rubber, plastic or ceramic materials. Steel bearings are the most common and are suitable for most applications. Rubber bearings are good at dampening noise and vibration. Plastic bearings are light. Ceramic bearings are very durable and are particularly suitable for high temperature applications. The selection must take into account the temperature and humidity of the bearing's operating environment, as well as the durability and efficiency required from the bearing.

Bearing maintenance is an important factor in the efficient and durable operation of the device. A properly maintained bearing can improve the performance of the device and extend its life considerably. Bearing lubrication is usually necessary for rolling bearings in order for them to function without friction.