The reason of crack on the needle roller bearings

The reason of crack on the needle roller bearings of the source: this website the author: the administrator to release time: 2017 - 06 - 08 08:56:28 views: 0 as the reason of crack on the needle roller bearings bearing industrial equipment in common equipment, connection on the realization of the function of equipment, is a relatively prominent contribution. But in bearing in the design of equipment, a key position, is the operation of the pressure is very big, and the use of industrial equipment, is a long-term, and is also very frequent, so for the bearing pressure is slightly larger, so the operation personnel in the factory, also can often find bearing can often appear crack, then cause the needle roller bearings what are the causes of crack? Next we will together for this aspect knowledge. 1, on the surface, the spherical roller bearing in the process of rolling contact, because of the work in the plastic deformation and strain hardening on the surface of the contact stress on the surface of the cyclical changes caused by the effect of external load, and finally on the inner surface of the small crack from the development, the formation of surface crack between the two, because Xie into the lubricant on the surface of the work, the power of the open, crack down on the wall, crack force to move forward; 2, from the surface, again and again under the pressure of the surface contact, the early crack depth specified in the exposed surface of cracks, and along the surface direction Angle, to the specified depth, since on the surface of contact area, and more than the surface, and finally formed the corrosion, leaving a horse pit. Due to the bearing play a role of cohesion, the source of the operation pressure, mainly is divided into two categories, and a very different stress points, crack forms are also different. Needle roller bearings in order to meet the requirements of equipment operation, also has a curve roller bearings and other types of design, so on the reason of the crack, more or less will there is a difference.