Hydraulic hardware failures are typically caused by contaminated hydraulic fluid.
Contaminants have other negative effects, such as causing wear and tear, which leads to a drop in operating efficiency.
The diagram below shows how contaminants can enter hydraulic lines.
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Controlling contamination in hydraulic hardware in the initial phase of operation is particularly important.
Contamination levels are high during assembly. Foreign particles that enter systems at this point are a major cause of secondary abrasion that can reduce the useful life of hardware, cause failures and lead to unreliable performance.
Initial contamination control checkpoints
- Ensure components are clean before system assembly
- Flush systems thoroughly after assembly; where possible, flush large-capacity lines separately for better results
- Install the right filters for the system (YAMASHIN-FILTER can provide advice)
- Change filters regularly
Solid particles
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Oxidized scale |
Welding sediment, forging scale, pipe scale |
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Metal particles |
Weld flash and burr from machining, powder generated by friction during system operation, sputter from welded joints |
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Silica sand |
Molding sand, grinding powder, airborne grit and dust |
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Chemical compounds |
Packing seal fragments and flakes of coating |
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Textiles |
Scraps of waste cloth, gloves and other materials |
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Liquid and airborne particles
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Water |
Airborne water moisture |
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Contaminant fluids |
Grease, cutting oil, anticorrosion oil, other hydraulic fluids |
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Air |
Air and other particles mixed in with the hydraulic fluid |
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Other |
Sediment caused by the deteriorating quality of hydraulic fluid |
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