No mechanical mechanism can carry out its work for a long time without using a special node in the design of the energy that is released during friction of combined parts.
This indispensable detail is the bearing. Their main task is to maintain a rotating axis and shaft, perceive radial and axial loads, and maintain a given position of parts. Depending on the type of friction, they are divided into bearings rolling or sliding.
Features of rolling bearings
This species is most common and recognition. The case of the product consists of two rings, separated by the so -called a separator in which balls or rollers are located. Depending on the used friction bodies, they differ in roller or ball types.
The advantages of rolling bearings include:
- minimum losses during friction;
- Small launch efforts;
- Easy to replace when failing;
- The ability to work in the absence of lubrication.
The last moment is not a rule, but, nevertheless, when disappeared for some reason, a lubricant, a bearing can fulfill its functions for a short time, and we will be increased noise when the node is working.
The disadvantages of such bearings include sensitivity to blows, increased radial dimensions.
inside the class of this type of product, they differ in the direction of the perceived force in:
- radial;
- radial - stubborn;
- stubborn;
- stubbornly - radial.
Sliding bearings
This node is less common and is a support inserted into the guide hole of the mechanism. Between the details there is an antifriction lining and lubrication. The latter is introduced one single one before installation or is constantly done in the process of work through a special nozzle.
The dignity of sliding bearings includes reliability at high speed speeds, resistance to vibration and shock loads, small radial dimensions.
The main drawback of this type of bearings in their high demands on quality and the presence of lubrication.
