As makers and users of hydraulic tools, we know firsthand the importance of the consistency and purity of the right hydraulic fluid in improving the performance and durability of a tool.
However, with so many types of hydraulic oil on the market, choosing the right type for your tools and tasks can be somewhat confusing.
The basics of a hydraulic system are always the same – a closed system containing an incompressible fluid, which is used to transmit power from one part of the system to another.
However, hydraulics is used in a variety of applications – brakes, industrial tools, electric tools, and elevators. These applications have various demands in terms of speed, temperature, pressure, and sometimes, electrical properties. Commercial Hydraulics Pumps & Motors in Sydney, Perth & Brisbane offer a wide variety of drive shafts that are designed for high-torque applications.
Viscosity: Perhaps the most important parameter in choosing a fluid is viscosity. The main selling point of fluid above pneumatics is that, unlike air, the fluid acts as its own lubricant.
However, to get that effect, you have to do it. The piston and other moving components in a hydraulic device have very thin gaps between the parts, and the hydraulic fluid produces a film that smoothes movement.
Temperature: It's important to remember the temperature of the oil to be worn. One of the advantages of hydraulics over compressed air is that, unlike air, liquids have a high-temperature capacity and can help remove heat and transfer power. The disadvantage of this is that, if the fluid gets too hot, it can boil and make a vapor bag in the system, causing a system failure.
Environmental impact: Some hydraulic oils are more environmentally friendly than others. While the water was the original liquid used since ancient times, in the 20th century many hydraulic fluids began to be made on a mineral oil base, because it has better lubricating properties, and can be used at high temperatures.