ABSTRACT
The hydraulic fluid is a very critical component of any hydraulic system since it is utilized to transmit pressure, which provides the power to perform work. In addition to transmitting power, the hydraulic fluid provides lubricity, corrosion protection, and cooling. Hydraulic systems convert mechanical power into hydraulic pressure via the fluid. Hydraulic systems can be classified into positive displacement and non-positive displacement. The hydraulic fluid is often the highest volume lubricant in off-highway equipment. An excellent summary of specifications for conventional hydraulic fluids is presented in a ready reference guide published by an additive supplier. The Japan Eco Mark is once again driven by open systems and closed systems of lubrication, the latter including hydraulics with the possibility of its leakage, specifically from construction machinery. Environmentally friendly hydraulic fluids can be challenging to formulate. Vegetable oils are the basis of HETG environmentally friendly hydraulic fluids.
