Hydraulic Oil Precision Filter Tester

1. Applications
The hydraulic oil filtration unit is designed to purify and maintain the cleanliness of hydraulic and lubrication systems across various industrial applications. It is suitable for:
Refueling filtration during oil filling operations.
Bypass filtration of hydraulic and lubrication systems during operation.
Circulating filtration prior to system commissioning or after maintenance.
Removing contaminants when the original equipment pump cannot effectively filter the oil.
Note: This machine is not suitable for flammable or explosive media such as gasoline or fuel oils.
These application scenarios ensure extended equipment life, reduced system wear, improved operational reliability, and lower maintenance costs.
2. Standards
The system complies with commonly recognized hydraulic oil cleanliness and contamination codes:
GJB 420
NAS 1638
ISO 4406
Cleanliness Level: 18/16/13
Compliance with these standards ensures the filtration unit delivers industry-grade precision and reliable oil purification performance.
3. Components
3.1 Gear Pump Assembly
Low-noise gear pump with strong self-priming capability.
Ensures smooth and stable operation even under varying load conditions.
3.2 Protection & Safety System
High-pressure pipeline equipped with an overflow protection valve, safeguarding the hydraulic circuit from overpressure damage.
3.3 Multi-stage Filtration System
Coarse Filter (Suction Side):
Protects the pump from large contaminants, extending the life of the main filter.
Fine Filter:
Available in multiple filtration accuracies to meet diverse user requirements.
Differential Pressure Transmitters:
Installed on both pre-filter and fine filter for real-time monitoring of element clogging.
3.4 Monitoring Panel
Equipped with a pressure gauge providing continuous indication of system operating pressure and filter contamination level.
3.5 Cleaning & Replacement Design
Suction filter element can be removed and cleaned directly with gasoline.
Pre-filter and fine filter designed for quick disassembly and replacement through top-cover access.
3.6 Piping & Connections
Clean internal piping layout to prevent contamination accumulation.
Ensures stable flow and minimizes pressure losses.
4. Technical Parameters
| Item | Specification |
|---|---|
| Working Pressure | 0.6 MPa |
| Differential Pressure Alarm | 0.2 MPa |
| Flow Rate | 50 ± 5 L/min |
| Applicable Medium Viscosity | ≤160 mm²/s (at 20°C) |
| Filtration Accuracy | 5 μm |
| Rated Power | 2.2 kW |
| Power Supply | 3-phase 380 V |
| Frequency | 50 Hz |
| Operating Temperature | 20°C – 70°C |
5. Advantages
High-performance filtration: Multi-stage filtration ensures the removal of particles and contaminants, significantly improving hydraulic oil cleanliness.
Reliable operation: Low-noise, stable gear pump with strong self-priming capability ensures dependable performance in long-term use.
System protection: Pressure overflow device effectively protects the hydraulic system from overpressure damage.
Easy maintenance: Suction filter is fully washable; pre-filter and fine filter cartridges can be replaced quickly and safely.
Real-time monitoring: Integrated pressure gauge and differential pressure sensors allow instant visibility of system performance and filter blockage conditions.
Extended equipment life: Ensures optimal lubrication quality, protects key hydraulic components, and reduces system failures.
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