The cage guidance method is also a very important factor in high-speed bearings

What is roller bearing skidding? When the bearing is working, the rollers should perform pure rolling motion on the inner and outer ring raceways. For a typical hollow roller, the ratio of the outer diameter to the inner diameter is 2, and the maximum hole bending stress should be less than 25,000 pounds/inch; the concentricity of the inner and outer diameters should be kept at 0. Compared with the running speed difference of the inner ring (or outer ring), it is slipping. It is relatively simple to adopt this measure, and it can be achieved only by reducing its number and diameter. 

Oil supply under the ring The advantage of using under-ring oil supply is that it takes away the heating of the bearing and minimizes the additional loss caused by stirring.005 mm. Many engines have adopted this measure, for example, the main bearing of Spey engine is of this type, not only the rollers are obviously sparse, but also the size is small. When the roller drag force is not enough to overcome the resistance, at this time, in addition to rolling, it will be accompanied by some sliding. The cage guidance method is also a very important factor in high-speed bearings. Therefore, increasing the drag force helps prevent the roller and cage from slipping. 

To Figure 1 Diagram of bearing slipping and scratching Compared with the fatigue peeling, the scratching of the bearing is shallower and has a band shape; compared with the normal working surface, it is rougher and uneven. Do you know what roller bearing skidding is? Why does the roller bearing slip? What measures can be taken to prevent roller bearings from slipping? These series of questions, (referred to as:)  Mechanical roller bearing factory based on the understanding of bearing knowledge, to share relevant content.  In addition, some parts of the working surface are scratched, and some parts are not scratched, which is closely related to the alternating load and the degree of damage to the sleeve. In this way, the viscous resistance becomes the force that drags the cage to rotate. 

To Figure 5 Load distribution of hollow roller preload bearing 5. What are the factors that cause roller bearings to slip and scratch? Roller bearing skidding is a necessary condition for bearing scratches, but slipping does not necessarily cause surface scratches. Because of the outer guidance, the relative movement between the cage and the guide surface of the bearing, the oil film forms a viscous resistance, while the inner guide is the opposite, and the viscous force of the oil film between the cage and the guide surface becomes a drag force .

 It can apply preload to all rollers so that all areas have no slip. Even under a very low external load, an excessive preload will still cause premature failure of the roller. Some materials are 'stained away' to form pits; while the more stained parts protrude above the original surface. What measures can be taken to prevent roller bearings from slipping? That is anti-slip measures 1. The common form of failure is bending fatigue.