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Hydraulic oil is a specially designed fluid used to transmit power within hydraulic systems. It consists of a base oil and various additives. The base oil can be either mineral or synthetic, or a combination of both. Mineral oil, derived from crude oil, is cost-effective, whereas synthetic oil is engineered to provide superior performance under extreme conditions. Additives are included to enhance specific properties of the oil, such as viscosity, anti-wear characteristics, and oxidation resistance.

At its core, a hydraulic filter is a device designed to remove contaminants from hydraulic fluid, ensuring that the fluid remains clean and free from debris. This is essential for maintaining the performance and longevity of hydraulic systems. Hydraulic filters work by trapping contaminants such as dirt, metal particles, and other impurities as the fluid passes through the filter media.

How does a Hydraulic Power Unit Work? By utilising fluid to transmit power from one location to another, hydraulic power packs can generate large amounts of power, which in turn can be used to drive hydraulic machinery.

Hydraulic systems are the lifeblood of many industrial applications, providing the power needed to move heavy machinery, operate equipment, and perform a myriad of tasks efficiently. However, to ensure the longevity and optimal performance of hydraulic systems, proactive maintenance is essential. In this comprehensive blog, we'll explore the top 10 maintenance tips that can help keep your hydraulic system running smoothly, prevent downtime, and extend the lifespan of critical components.

Neilson Hydraulics is a highly technical and innovative hydraulic company that offers a range of hydraulic products and components, built on over 30 years of expertise. We have a strong technical team that specialises in the design, build, manufacture, service, installation and commissioning of hydraulic systems and hydraulic power packs, from concept to completion. We have strong technical abilities in CAD, SolidWorks, system controls and hydraulic circuit design.

What is a Hydraulic Accumulator? A hydraulic accumulator is a device that stores pressurized fluid under the action of an external force. It consists of a pressure vessel, a piston, and a fluid inlet and outlet. When hydraulic fluid is pumped into the accumulator, it compresses the gas inside, storing potential energy that can be released when required.

In hydraulic systems, fluid cleanliness is not just a maintenance concern—it’s a critical performance factor. Contaminated fluid is the leading cause of system failure, accounting for up to 80% of all hydraulic component wear and breakdowns. Hydraulic filters are the first line of defence in maintaining fluid integrity, and knowing when to replace them is essential to protecting both system performance and longevity.

With over 30 years of technical excellence and a strong engineering heritage, Neilson Hydraulics—based in Sheffield—partners with global industry leaders to design, build and commission hydraulic systems that drive manufacturing efficiency.

Hydraulic systems are built for performance, but they’re also sensitive pieces of equipment. Contamination is one of the leading causes of hydraulic failure, and often it comes down to a small but mighty component: the hydraulic filter. At Neilson Hydraulics, we understand just how critical filtration is to system health. That’s why we supply high-quality filters from trusted names like Eaton and Hengst.

Neilson Hydraulics stocks and supplies Eaton (formerly Internormen) Filters and Replacement Filter Elements.