Features:

High speed (up to 50 m/s);

High frequency (up to 1000HZ);

Long life (more than 5 years);

Low friction (less than 0.01MPA).

Sealing of high-end servo hydraulic cylinders:

1. The hydrostatic bearing is equipped with a hydrostatic piston rod guide, and the rod guide and the seal are in one component. The piston rod floats on a layer of oil film and can withstand large transverse shear forces. The pressure supply of the hydrostatic bearing is achieved through the internal structure of the cylinder, which can withstand large lateral forces. Since the contact seal and the dust ring do not bear pressure, the residual friction force in the entire pressure range is very small, thus To ensure the high dynamics and long life characteristics of the servo hydraulic cylinder.

2. The annular gap seal is a non-contact seal. Due to the pressure difference, the oil passes through the smaller orifice to form a thin film of oil, which replaces ordinary seals to achieve the sealing effect. The maximum lateral force to withstand is limited. Since the contacting seal and dust ring do not bear pressure, the guide element of the piston rod is optimized for friction, so the starting friction is very small in the entire pressure range, thus ensuring the high dynamics of the servo hydraulic cylinder And long life characteristics.

Application fields: all kinds of tensile and compression testing machines, multi-degree-of-freedom swing tables, dynamic simulation of airplanes and automobiles and their parts, high-speed and long-life requirements machine tools, injection molding machines and stamping machines.