Hydrostatic Balance in Hydraulic Component Design

摘要

Hydraulic components are unique in that it is often possible to offset or balance hydrostatic forces to reduce loads on lubricated surfaces. By reducing surface loading, the maintenance of full-film lubrication is improved and boundary lubrication conditions are less likely to occur. Hydrostatic force is the product of pressure and area. Expressed mathematically, the equation is F = P × a. The balancing or offsetting of hydrostatic force is achieved by exposing opposing areas to the same pressure. The double-acting cylinder in Figure 1 illustrates this concept.