Bearing product material characteristics
To be honest, there is not a lot of black technology about bearings in high-speed rail, but I think it is very important to be able to make a product to the extreme. Bearings this small thing, indeed many people can not see, but it is precisely this small part, can make the aircraft fly not high, the machine tool is not stable enough, the car is not fast. Both of these are typical artisan countries, advocating the pursuit of industry to the extreme. And technically, it has also accompanied the development of other industries.
If you dig deeper into how bearings work, you will find that bearings are really a very clever mechanical element, although simple, but very cleverly using the characteristics of the material.
Look - the group marks the fixed V of Zhongguan Qian Bearing Xu Tian contact with the city force.
Each bearing is allowed to use contact stress is more than 4000MPa, learned machinery are clear, the general tensile strength of the material, are only a few hundred megapascals, and then high is more than 1000 MPa, the bearing withstands more than 4000 MPa contact stress will not fail, which is much higher than the tensile strength of the material. This is to analyze the force of each part of the bearing.
Have you found that every part of the bearing is subjected to pressure load, yes, this is the subtlety of this component of the bearing, take the simple deep groove ball bearing as an example, between the inner ring raceway and the steel ball, between the steel ball and the outer ring raceway are the pressure load applied to each other. The material's ability to withstand compressive stress must be much higher, so the bearing raceway or steel ball can withstand high compressive stress.
