How to choose the right industrial hydraulic oil

Choosing a hydraulic oil starts with the viscosity recommended by the equipment manufacturer, usually expressed as an ISO VG grade (32, 46 or 68 are the most common). Using a viscosity below the specified value reduces the lubricating film and accelerates pump wear. Using one above it increases pressure drop, raises temperature and impairs system response.

The second criterion is the additive package. Modern systems with vane or piston pumps operating above 100 bar require oils with anti-wear (AW) additives, which form a protective layer on surfaces under contact. For systems with water present or large temperature swings, properties such as demulsibility and a high viscosity index make a real difference in fluid life.

Finally, assess the operating conditions: ambient temperature, duty cycle, contamination by dust and moisture. Agricultural equipment working in the field under sun and dust has different demands from a press in a climate-controlled factory.

When in doubt, send your equipment specification to the JEFLUB technical team. The Fluid AW and Fluid HO lines cover the main demands of industrial and mobile hydraulic systems, and we help you confirm the right choice before purchase.

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