Mechanical parts: thrust bearing
Under axial thrust and limit the axial movement of the sliding bearing shaft. Two completely separated by a fluid film bearing friction surface is divided into fluid dynamic pressure thrust bearing, and hydrostatic thrust bearing? Suitable for high running at a moderate speed. Two friction surface cannot be completely separated by a fluid membrane of thrust bearing work under boundary lubrication (see lubrication)? Applies only to a lower speed.
Table fluid dynamic pressure thrust bearing type as several kinds of main types of fluid dynamic pressure thrust bearing.
Plane groove thrust bearing. Structure is the most simple? Two sliding surface parallel to each other? In order to improve the lubrication? Open with radial oil groove on the surface of the tile. This kind of bearing oil density changes caused by friction heat? The oil film? Some pressure to bear load. But the capacity of axial load is low? Thus only applies to the? Small size of the light load conditions? For positioning or seal.
Inclined plane thrust bearing. Consists of several cant have peace segment below. Cant and thrust ring oil wedge? Running in the whole formation pressure of oil film on the surface of tiles. Slope area reaches 80% of the tile surface area and the inlet oil film thickness at the exit of 2.2 ~ 3 times? The bearing capacity of the bearing is the largest. This kind of bearing has simple structure? Reliable work? But cant Angle is small? Not easy to processing? Installation of high precision and requirements? Is used as a speed relatively stable? Small size of the thrust bearing.
Ladder thrust bearing. Consists of several has a segment in the plane of the ladder. Stepped surface embossing method or acid etching method available? Into? Processing convenience? More for small bearings.
Tilting pad thrust bearing. By several independent? Can change with working conditions? Of uniform pivot swing automatically segment (see tilting pad bearing). The capacity of axial load big? Able to work in a wider speed range of normal? The most general form is a large bearing? But there have also been used in the thrust under the condition of small small-sized bearing. Many ways of bearing segment? Large bearing supporting structure are complicated?? This is higher.
