Pressurised fluid transmits large forces.
Pressurised oil (up to 350 bar) transmits large forces with fine control: pumps, valves, cylinders, motors, accumulators, filters. Advantages: power density, stiffness, overload protection; disadvantages: leaks, heat, contamination. Used in excavators, presses, aircraft actuators.
A 100 mm bore cylinder at 200 bar produces about 157 kN.
Hydraulic systems transmit large forces with compact components, which suits heavy machinery, presses and construction equipment.
Pressurised fluid transmits large forces.
Hydraulic systems transmit large forces with compact components, which suits heavy machinery, presses and construction equipment.
Pressure applied to a confined fluid is transmitted equally in all directions, so a small piston can lift a large load on a larger piston.
High-pressure leaks can cause injuries and fires, and oil contamination can damage valves and pumps, so maintenance and filtration are essential.
Typical applications include lifting a heavy load with a hydraulic cylinder on an excavator, pressing metal parts with a large hydraulic press and steering a vehicle with power-assisted hydraulics.
Study "Pneumatics" first (topic 48 of 102 in Manufacturing, Robotics & Systems). It covers the groundwork this topic builds on.
Pascal's law. Flow Q=A×v. Proportional and servo valves.
A 100 mm bore cylinder at 200 bar produces about 157 kN.
The next topic is "Sensors in automation", which builds directly on this one.
It is classed as Intermediate in Manufacturing, Robotics & Systems (topic 49 of 102). It is an intermediate topic. Work through the beginner topics in Manufacturing, Robotics & Systems first.
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