The primary purpose of a hydraulic oil filter is to remove contaminants from the hydraulic fluid, ensuring the system operates efficiently and reliably. Common types of filter elements include hydraulic oil filters, Hedeck filters, Pall filters, and dust filters. In this article, we will explore how a jade hydraulic oil filter works and why it's essential for maintaining system performance.
A jade hydraulic oil filter plays a crucial role in filtering the hydraulic fluid. During operation, various impurities can enter or be generated within the hydraulic system. These impurities may come from several sources: residual mechanical particles such as rust, casting sand, welding slag, metal shavings, paint, cotton threads, and more, which remain after system cleaning; external contaminants that enter through the fuel filler cap or dust seals; and debris produced during operation, like seal wear particles, metal powders from moving parts, and substances such as colloids, asphaltene, and carbon residue. When these contaminants mix with the hydraulic oil, they circulate throughout the system, causing damage in multiple areas. This can lead to blockages in small gaps or orifices, disrupt the lubricating oil film, cause surface scratches, increase internal leakage, reduce efficiency, raise operating temperatures, and accelerate oil degradation. According to industry data, over 75% of hydraulic system failures are caused by contamination in the hydraulic oil. Therefore, keeping the oil clean and preventing contamination is critical for the longevity and performance of the system.
Jade filter elements are available in four main types: paper, mesh, wire gap, and chemical fiber. Among these, chemical fiber filters offer superior filtration performance and higher precision compared to paper filters. However, both paper and chemical fiber filters are difficult to clean once clogged, so they must be replaced rather than cleaned. Oil return filters are often equipped with a differential pressure signaling device. When the pressure difference between the inlet and outlet reaches 0.35 MPa due to clogging, the device sends an alert, indicating that the filter element needs cleaning or replacement. Modern jade filters use advanced chemical fiber materials, offering high filtration accuracy, large oil flow capacity, low initial pressure drop, and high dirt-holding capacity. These filters are calibrated using absolute filtration ratings, with filtration ratios of P3, P5, P10, P20 > 100 and filtration efficiency of at least 99%, meeting ISO standards.
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