How Are Hydraulic Systems Different from Pneumatic Ones?
There have been several confusions about how a hydraulic system is different from a pneumatic one for a long time. As power circuits, these are similar to each other in a number of ways, including the use of a substance to outlet mechanical energy, components, executions and terminology. These systems also require similar kinds of pump and valves for force as well as velocity control. Despite all these similarities, there are several differences between the two systems.
What are the significant differences?
The primary difference between the two systems lies in how they transmit power. While pneumatic systems work by using an easily-compressible gas such as pure gas or air, hydraulic systems use relatively incompressible liquids, such as ethylene glycol, mineral oil, water or fire-resistant fluids. Due to this difference, some other aspects of the systems follow similar suit. Where hydraulic systems utilize pressures ranging from 1000–5000 or even over 10,000 pounds per square inch for specific applications, pneumatic systems require pressures ranging between only 80–100 psi. In addition to this, hydraulic systems need a tank to store oil in case of shortage; however, pneumatic systems don’t require such containers as air can simply be drawn from the atmosphere, which is later purified via air filter.
Since pneumatic machines use compressed gases, there can be a little delay in the movement. On the other hand, hydraulic systems don’t see any delay in the movement as liquids are not very compressible. Some of the most popular examples of products that use pneumatics are precision drills used by dentists; pneumatic brakes used in the trucks, buses and trains; nail gun and dentist chair. Dump truck lift, hydraulic lift to lift cars and jaws of lifts are some examples of hydraulic systems.
Strengths of Pneumatic and Hydraulic Systems
Pneumatic systems can be relied upon for the simplicity of their design and low initial costs. Low machining and operational costs are a result of air-operated circuits that are operated at low pressure and components that are made from reasonably priced materials. So, air circuits could be the better choice for someone, who wishes to begin in a less expensive manner. However, costs can go up in the long run, as air motor components that are used for normal working pressure have high costs.
When it comes to hydraulic systems, a high initial cost is balanced by low operating costs due to their higher efficiency. A company using several hydraulic machines in its manufacturing plant can benefit by setting up central power units to gain benefit through its advantages. Doing this, machine noise levels can be reduced, and their uptime is increased. Some of the leading names in the industry for purchasing hydraulic supplies include Sunfab, Rexroth and Casappa.
What are the best uses of pneumatics and hydraulics?
Pneumatic systems are usually used in construction sites, factory set ups, mills, building, technology for power generated by a central source of compressed air. On the other hand, hydraulic systems have a variety of roles to play in everyday life. From a car’s brake to lifting equipment, these systems have many applications in a person’s day-to-day life. Hydraulic systems from brands like Rexroth, Sunfab and Casappa have seen worldwide appreciation from industrial experts for delivering exceptional performance in industrial uses. Thus, it is advantageous to opt for good brands to gain the best value for your invested money when purchasing these systems.