People who have received a technical education in our country probably recall with horror the subject called "Machine parts". Surely they remember course projects with gearboxes, gearboxes, belt conveyors and the like. And everyone remembers how they calculated the small but very important elements - bearings . In other words, those who have a liberal arts education have also met with bearings more than once in their lives.
As a child, when you shot steel balls from a slingshot, you probably did not even think about where they came from. And only from the words of senior comrades did they hear the incomprehensible, but for some reason the whole explanatory word - bearing.
So what is a bearing?
What is it for? Let's try to figure it out. And professional traders of bearings from the site completion.ru will help us with this. Currently, there are two main classes of bearings: rolling bearings and plain bearings.
1. Rolling bearings. Their distinctive feature is the presence of rolling elements (bodies) (the same balls released from the slingshot). Their main task is to transfer the rolling /rotation of something with the least resistance. It is these bearings that we meet most often in life. Such bearings are almost everywhere: they allow you to turn a bicycle wheel and roll a wheelbarrow with minimal effort, they stand in a tower crane block lifting a multi-ton load, and in a computer's hard disk spinning up to tens of thousands of revolutions per minute.
2. Sleeve bearings. Unlike rolling bearings, there are no rolling elements in this case, and the movement is carried out by the lubricant. They are used in conditions of high loads and when it is necessary to maintain high accuracy of the mechanism. They are widely used in engines, compressors, pumps.
The next time you go down the elevator or ride a car, roller skate or ride a train, you should know that small but irreplaceable elements in our life work around you - bearings.
