| Hydraulic Filter 398-7171 H-55440 SO97096 Parameter: | |
| Part Number | 398-7171 H-55440 SO97096 |
| Brand | Tamfiney |
| Weight | 1804g |
| Height | 405 mm |
| Outer Diameter | 110 mm |
| Inner Diameter/ Thread Size | 65 mm |
| Minimum Order | 100 PCS |
| Place of Region: | Zhejiang, China |
| Payment Terms: | T/T |
| Price Terms: | FOB |
| Lead Time: | 30 to 50 days based on order quantities |
| Market Type: | After Market |
| Current Export Market: | Southeast Asian,North America, South America, Western Europe, Eastern Europe, Africa, Oceania |
Applications:
CATERPILLAR 313 F313 F/LGC316 F318 FCAT 318 F L
Professional 398-7171 Hydraulic Return Oil Filter H-55440 SO97096
Q: What is the return line filter on hydraulic oil?
The hydraulic oil return pipe filter is a low-pressure filtration device, installed at the inlet of the hydraulic system return pipe or oil tank, used to intercept metal particles, rubber impurities and other pollutants generated by component wear. Prevent them from flowing back to the oil tank and contaminating the oil.
Core Definition and Function
- Location: Connected in series between the hydraulic actuator (cylinder/motor) and the oil tank, or directly top mounted/side mounted on the oil tank.
- Function: Filter out abrasive particles and external impurities generated inside the system, maintain oil cleanliness, protect hydraulic pumps and precision valves, and extend system life.
- Working characteristics: Able to withstand low pressure (usually ≤ 1.6MPa/16bar), requiring high dirt holding capacity and resistance to hydraulic shock, with some equipped with bypass valves to prevent filter element rupture.
Key parameters and structure
- Filtration accuracy: The mainstream range is 10-20 μm (glass fiber), and can also be customized to 3-5 μm.
- Core components: filter element, housing, differential pressure transmitter (blockage alarm), bypass valve (protection activated when pressure difference reaches 0.3~0.5MPa), check valve and magnetic rod.
- Failure protection: When the filter element is blocked and the pressure difference between the inlet and outlet exceeds the set value (such as 0.35MPa), the bypass valve automatically opens to prevent the filter element from breaking down, and the transmitter prompts maintenance.
Q: Where is the hydraulic return filter?
The hydraulic return oil filter is mainly installed at the end of the hydraulic system return oil pipeline or at the top of the oil tank , between the actuator and the oil tank, to ensure that the oil is filtered before returning.
- Pipeline type: connected in series on the return oil pipeline, usually near the inlet of the fuel tank;
- Plug in/tank cartridge type: directly installed vertically on the top cover or side wall of the fuel tank, with the filter element submerged or semi submerged in the oil;
- Integrated: Some construction machinery has it built into the return chamber inside the fuel tank, with only the shell or differential pressure transmitter interface visible externally.
The different models (such as excavators and steel mills) varies greatly, and it is necessary to confirm with the specific equipment hydraulic schematic or check the filter element components marked with "Return" and "Return Oil" near the oil tank.
