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Hydraulic Oils for Industrial Equipment | Presidential Oils

Hydraulic Oils

Hydraulic oils designed to handle high-pressure systems while protecting seals and components.

What Hydraulic Oil Does in High-Pressure Systems

Hydraulic oil is the lifeblood of industrial equipment. In high-pressure systems, it does more than transfer power – it also lubricates moving parts, dissipates heat, and seals clearances between components. A properly formulated industrial hydraulic oil helps protect pumps, valves, and seals from wear, corrosion, and oxidation, which are leading causes of downtime.

Whether in a manufacturing plant, construction site, or fleet operation, using the right hydraulic oil is essential for maintaining equipment efficiency and extending service life.

Different Types of Hydraulic Oils

Industrial applications call for hydraulic oils tailored to equipment design and operating conditions.

Common categories include:

• AW (Anti-Wear) Hydraulic Oils – General-purpose fluids that protect against pump and valve wear. Available in a wide range of viscosity grades for light to heavy-duty systems.
• Non-Zinc Hydraulics – Formulated with ashless chemistry, ideal for environments where zinc-based additives are restricted or not compatible with system materials.
• R&O Hydraulic Oils – Designed for oxidation and rust resistance, ensuring longer oil life and system cleanliness in turbines and circulating systems.
• Tractor Hydraulic Fluids – Specialized blends that combine transmission, gear, and hydraulic performance for agricultural and off-road equipment.

Matching Viscosity Grades to Applications

Selecting the correct viscosity grade ensures reliable operation across different temperatures and loads. Common viscosity ranges include:

• AW 22, AW 32 – Suited for light machinery and low-temperature conditions
• AW 46, AW 68 – Standard choices for industrial hydraulics such as presses, forklifts, and CNC machines
• AW 100, AW 150 – Higher-viscosity grades used in heavy-load or high-temperature applications, including excavators and large industrial presses

Choosing the right viscosity is critical for efficiency – too thin and the oil may not protect against wear; too thick and it can reduce energy efficiency.