The "VG" stands for Viscosity Grade, which measures the fluid's resistance to flow at a standard temperature of 40°C. Using a fluid with incorrect additive chemistry can cause seal degradation, leading to leaks and system contamination over time.
Stopping ISO 68 Hydraulic Oil Moisture Ingress and Contamination
Choosing the correct viscosity is paramount; a fluid that is too thin can lead to increased internal leakage and wear, while one that is too thick creates excessive friction, heat generation, and reduced pump efficiency, potentially leading to system failure. An ISO 68 fluid has a kinematic viscosity of 46 centistokes (cSt), with a permissible tolerance band of ±10%.
Selection and Compatibility When selecting an ISO 68 hydraulic fluid, it is essential to consult the equipment manufacturer's specifications. Regularly monitoring fluid levels and conducting periodic oil analysis are critical steps.
How to Prevent Moisture Ingress in ISO 68 Hydraulic Oil
**Oxidation stability:** Resisting the chemical breakdown caused by heat and oxygen, which can lead to sludge, varnish, and reduced service life. Furthermore, compatibility with system seals and hoses must be verified.
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