
BLYJ Series Portable Oil Filter Cart for Hydraulic Oil Filtration
Introduction:The BLYJ series portable oil filter cart is a compact, lightweight mobile oil purification device built for filling and offline filtration of hydraulic and lubricating oil. Its small footprint and wheeled or portable frame allow operators to perform oil maintenance on-site, removing solid particles to protect hydraulic components, reduce equipment downtime and extend the service life of industrial lubricants.
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Product Introduction
The BLYJ series portable oil filter cart is a lightweight oil purifier independently developed for convenient oil filling and oil purification tasks. This hydraulic filter is designed for easy transportation, enabling field filtration and oil refilling for all types of hydraulic lubrication equipment. The built-in pre-filter on the suction side safeguards the oil pump and prolongs the service life of the main filter element. Users can freely select filter elements with different filtration precision to meet diverse cleanliness requirements of hydraulic oil systems. It supports bypass filtration while hydraulic lubrication systems are running, making it a practical solution for routine maintenance of hydraulic stations and industrial machinery.
Working Principle

When the BLYJ portable filter cart starts working, the built-in pump draws contaminated hydraulic oil through the suction hose. The oil first passes through the primary pre-filter at the pump inlet, which captures larger solid impurities to prevent pump damage. Next, the oil flows into the secondary fine filter after the pump, where tiny particulate contaminants are trapped by the fine filter cartridge. After purification, the clean oil is delivered out through the outlet port. This machine can work in two modes: oil refilling for hydraulic systems, or bypass online filtration during equipment operation. Continuous circulation filtration gradually lowers particle contamination concentration inside the oil tank, minimizing abrasive wear on valves, cylinders and hydraulic pumps.
Technical Specifications
| Item | BLYJ-6-*/** | BLYJ-25-*/** |
|---|---|---|
| Model | BLYJ-6-*/** | BLYJ-25-*/** |
| Rated Flow | 6 L/min | 25 L/min |
| Operating Temperature | 6 ~ 80 ℃ | 6 ~ 80 ℃ |
| Recommended Viscosity | 10 ~ 160 CSt | 10 ~ 160 CSt |
| Rated Pressure | 0.4 MPa | 0.4 MPa |
| Initial Pressure Loss | ≤0.02 MPa | ≤0.02 MPa |
| 1st Stage Pre-filtration Precision (before pump) | 40 μm | 40 μm |
| 2nd Stage Fine Filtration Precision (after pump) | 3, 5, 10, 20, 40 μm | 3, 5, 10, 20, 40 μm |
| Voltage | AC380V 3-phase, AC220V single phase | AC380V 3-phase, AC220V single phase |
| Motor Power | 0.25 kw | 0.35 kw |
| Weight | 16 kg | 25 kg |
| Overall Dimension | 400×200×510 mm | 640×500×900 mm |
Core Advantages
Ultra-portable lightweight structure:
Compact size and low weight. Two structural styles available: portable frame and wheeled trolley design, easy to carry to outdoor sites and narrow workshop spaces.
Two-stage graded filtration:
Pump inlet pre-filter protects the oil pump from large debris, the secondary fine filter removes fine solid particles, achieving reliable purification results.
Customizable filtration precision:
Optional fine filter elements of 3μm,5μm,10μm,20μm,40μm to match different ISO oil cleanliness standards.
Dual working modes:
Supports hydraulic system oil refilling, and online bypass filtration when the host equipment keeps running. No need to shut down machinery for oil maintenance.
Wide oil adaptability:
Handles lubricating oil and hydraulic oil with viscosity between 10 ~160 CSt, applicable for multiple industrial oil types.
Low energy consumption:
Small-power motor design, low operation cost, simple structure and easy daily maintenance. Filter element replacement can be finished quickly.
Application Scenarios
Routine refilling and periodic maintenance for hydraulic lubrication systems
Bypass filtration while hydraulic lubrication systems keep operating
Field oil purification for construction machinery, injection molding machines and metallurgical equipment
Small hydraulic station oil cleaning and oil transfer
Equipment service workshops for hydraulic component overhaul and oil replacement
FAQ
Q1: What are the two available structural versions of BLYJ filter cart?
A1: We supply two types: small portable bracket type and wheeled trolley type, customers can choose according to site space and moving demands.
Q2: Can this filter cart run while the host hydraulic machine is working?
A2: Yes, it can be used for bypass filtration during system operation, to continuously clean oil without shutting down the main equipment.
Q3: What filtration grades are available for the secondary filter element?
A3: Optional precision includes 3μm,5μm,10μm,20μm and 40μm for different cleanliness targets.
Q4: What is the weight of BLYJ-6 model?
A4: BLYJ-6-*/** weighs only 16 kg, easy for one person to carry and operate.
Q5: What temperature range is suitable for oil filtration?
A5: Operating temperature range: 6 ~ 80℃. Do not filter oil exceeding this temperature range.
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