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The history of the world bearings.

wallpapers Industry 2020-05-07

The history of the world bearings.

As for the origin of bearings, this one goes back to ancient Egypt. Early linear motion bearings consisted of a row of wooden poles placed under a pry plate. The technique may date back to the construction of the great pyramid of giza, though there is no clear evidence. Modern linear bearings use a working principle, but sometimes balls are used instead of rollers.

Initial stage

From heavy-duty car axles and machine tool spindles to precision clock parts, rotary bearings are needed in many situations. The simplest rotary bearing is the bush bearing, which is simply a bushing between the wheel and the axle. This design was then replaced by rolling bearings, in which the original bushing was replaced by a number of cylindrical rollers, each of which acted like a separate wheel. The first practical rolling bearing with a cage was invented in 1760 by clock-maker John Harrison for the H3 chronograph.
In the 17th century, Galileo gave the earliest description of ball bearings that were "fixed" or "caged". However, the installation of bearings on the machine was not realized for a long time. The first patent about ball track is 1794, wales card mason called Philip Vaughn iron manufacturing business as wagon axle bearing, ball bearing from then on it was not until the 19th century 50 s and 60 s, people will ball bearing is widely used in the children's play merry-go-round, propeller shaft, machine gun turret on ships, armchairs and bicycle equipment such as axis. In 1883, FAG founder Friedrich Fischer proposed the use of suitable production machines to grind steel balls of the same size and precise roundness. This laid the foundation for the creation of an independent bearing industry.

Growth Stage

World war II stimulated the development of military industry, bearing the status of military industry increasingly significant, along with the rapid development of science and technology, brief stability after the first world war and world war ii in the arms, rapid growth prompted the world bearing industry, bearing varieties increased, widely used in automotive, aircraft, tanks, armored vehicles, machine tools, instruments, meters, bicycles, sewing machines, and many other fields.
During the second world war, with the modernization of the means of war, people's understanding and attention to bearings sublimated to an unprecedented height, each country is in urgent need of bearings, eager to establish the bearing industry, as a result, a large number of bearing plants have appeared in various countries. It can be seen from the location of the allied war against Nazi Germany. Massive mass bombing, destroying morale and the economy at one blow, was a classic tactic of world war ii. On reaching targets on German soil, the Allies believed that, in order to weaken the enemy's fighting capacity, it was necessary to carry out heavy bombing raids on German submarine manufacturers and bases, aircraft manufacturers, bearing plants, oil refineries, synthetic rubber factories and vehicles. The small town of Schweinfurt, where the German bearing works were concentrated, was heavily bombed in August and October 1943. The bombing mission was carried out by America's ace air force eight. Albert Schuber, Nazi Germany's munitions minister, admitted that the August bombing had reduced German bearing production by 38 per cent, while the October bombing had destroyed 65 per cent of the industry.

Evolution Stage

With the rapid development of high and new technologies such as aerospace, nuclear industry, electronic computers, optical and electromagnetic instruments, precision machinery, etc., the world bearing industry, which reflects the level of contemporary science and technology, has entered a new historical period of comprehensive innovation in manufacturing technology, rapid development of varieties, and great efforts to improve the performance and accuracy.
This period bearing varieties, USES everything now bearing tens of thousands of varieties and oversize bearings to 38 meters, miniature bearing small to zero a few millimeters, namely the traditional single row, double row and column ball bearings, roller bearings, needle roller bearings, tapered bearings, more presence of lubrication bearings, self-lubricating bearings, angular contact bearings, bearing, universal joint bearings, ultra thin wall bearing, wheel hub unit bearing, air bearings, linear bearings, superconducting bearing, magnetic bearing and so on.
Bearing industry has become a big climate, as parts of the small bearing has had an exclusive, considerable scale, not negligible party market, bearing trade ushered in the heyday.

you might need more relevant topics as follow:

The Introduction of Roller Bearings

How do cylindrical roller bearings vibrate?

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