Causes & Effects of Hydraulic Oil Contamination

Causes & Effects of Hydraulic Oil Contamination

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Aug 25, 2017 - 19:51 Updated: May 21, 2025 - 19:52
Causes & Effects of Hydraulic Oil Contamination

Causes & Effects of Hydraulic Oil Contamination
The main cause of operating faults in hydraulic systems is heavily contaminated fluid.

Contamination enters the fluid through filler caps and seals.

Internal contamination results from parts moving within the hydraulic system.

Operational contamination refers to dirt particles that appear in hydraulic fluid during operation. This contamination may:

Leak in from the outside onto the piston rod through weak seals, breathers, or insufficient wiping.

Be caused by internal abrasion (e.g., abrasion of seals, metal filings).

Result from aging of the hydraulic fluid, leading to sludge formation.