Suction Filter: Installed in the hydraulic pump's suction line or reservoir, it filters the oil entering the pump from the reservoir.

 

Return Filter: Installed at the end of the system's return line, it filters the oil before returning to the tank.

 

Suction Filter: This filter performs coarse filtration, typically with a filter resolution of 100–180 μm. It uses a woven wire mesh or notched wire material.

 

Return Filter: This filter performs fine filtration, typically with a filter resolution of less than 20 μm. It uses a pleated fiber filter structure for improved filter efficiency.

 

Suction Filter: This filter primarily intercepts large particles (such as metal shavings and dust) remaining in the reservoir, preventing pump wear and cavitation.

 

Return Filter: This filter intercepts fine contaminants (such as component wear particles and rubber debris) generated during system operation, preventing them from re-entering the circulation system.

 

Suction filter: Low operating pressure, initial differential pressure ≤ 0.003 MPa, maximum differential pressure ≤ 0.02 MPa. Avoid excessive flow resistance that could cause pump cavitation.

 

Return filter: Must withstand return line pressure fluctuations (typically <1 MPa), with a maximum differential pressure of 0.2–0.35 MPa. Consider the impact of hydraulic shock during design.