Industrial

Selecting the Right Hydraulic Oil: AW Grades and Viscosity

Hydraulic systems are sensitive to oil selection. The wrong viscosity or additive package can lead to system failure and costly downtime.

IndustrialSeptember 5, 20244 min read

Hydraulic systems power everything from construction equipment to manufacturing machinery. Selecting the right hydraulic oil is critical for system efficiency and longevity.

What AW Means

AW stands for Anti-Wear. AW hydraulic oils contain zinc-based additives that form a protective film on metal surfaces, reducing wear under high-pressure conditions.

Viscosity Grades

Hydraulic oils are available in different ISO viscosity grades, most commonly: - ISO 32: For high-speed systems and cold climates - ISO 46: The most common grade for general industrial use - ISO 68: For heavy-duty systems and warm climates

Key Selection Criteria

1. System pressure: Higher pressure requires better AW protection 2. Operating temperature: Affects viscosity selection 3. Pump type: Gear, vane, and piston pumps have different requirements 4. Environmental conditions: Temperature range affects viscosity grade

MB Lubricants' HYDROGUARD AW is formulated for demanding industrial and mobile hydraulic systems, providing excellent anti-wear protection, oxidation stability, and rust prevention.