Bearing load and impact load over t

Bearing load and impact load over the life of the bearing: movement and change, or when the bearing is fixed, machine vibration and other factors will cause the contact point to form pits. External hard disk into the bearing, and the formation of indentation on the surface, after exceeding a certain limit, linear permanent deformation, will hinder smooth movement, vibration and vibration caused by noise, will further weaken the surrounding material, causing a vicious circle, concave surface expansion, permanent deformation limited to provide basic static load ratings. The static load capacity is equal to 1/10000 of the diameter of the steel ball. The permanent deformation of the contact point between the two rings is called the basic static load rating C0. The impact of using bearings is difficult to measure. The common static load is to select the appropriate safety system to ensure that the static load of the bearing does not exceed the rated static load. FS/C0 and shockproof bearing P0. FS 1 FS 2 ~ 7 1.5, the place subjected to vibration and impact.Because the bearing works at a certain depth below the surface under repeated loads, the weak part of the crack will be formed, and then the metal plate will be used to peel the surface contact, which is called fatigue spalling. In the process of installation, lubrication and sealing under normal circumstances, bearing failure is the fatigue failure of the vast majority of people. The life is generally in the bearing, which refers to the fatigue life of the bearing. The linear bearing has a rated life of 50,000 m, which is guaranteed by defining the basic rated dynamic load. Because the life of the bearing is scattered, the conditions of using the same material, the same process and the same bearing are different, the basic dynamic rated load of the bearing C is defined as the dynamic bearing capacity of a group of the same bearing. Running 50000 meters under the same conditions, no fatigue spalling phenomenonAccording to the load weight of 2000N, we choose two guide rods and nuts, so that the load on the sliding bearing is evenly distributed. The upper and lower six sliding bearings are respectively connected with the bottom plate and the upper fixing plate. The two sides of the bearing seats are fixed, and the middle six bearings can slide up and down through nuts. Six guide bars plus nuts, so the load on the sliding bearing of each guide bar is 166N. The sliding bearings chosen in this design are flanged in shape.