Knowledge

What is the relationship between viscosity loss and the performance of hydraulic oils?

Posted by Hamid Shakouri on 3rd Sep 2024

What is the relationship between viscosity loss and the performance of hydraulic oils?
There is a connection between the degree of viscosity loss and hydraulic performance. When hydraulic oil experiences significant shear instability leading to high viscosity loss, it can be detrimental to your system. This is because the viscosity of the hydraulic oil may fall outside the specified range for its viscosity grade. Increasing shear reduces the high-temperature properties of the fluid. …
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What is the meaning of the thermal conductivity of oils?

Posted by Hamid Shakouri on 3rd Sep 2024

Thermal conductivity refers to a material's capability to conduct heat and is typically represented by the symbol "k" with units in W/mK (Watts per meter Kelvin) in the International System of Units (SI). This property plays a crucial role in gauging conductive heat transfer. The ability of heat transfer fluids to conduct heat is directly influenced by their thermal conductivity. A heightened ther …
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Ash and Sulfated Ash and their role in the performance of engines

Posted by Hamid Shakouri on 3rd Sep 2024

Ash and Sulfated Ash and their role in the performance of engines
Ash content refers to the metallic residues, such as zinc and calcium, left behind when engine oil enters the combustion chamber and burns alongside the fuel. Zinc is a primary element in antiwear additives, while calcium comes from detergent additives.These ashes adhere to the engine parts' surfaces. However, a significant issue arises when these oil-borne residues accumulate between the valve an …
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What are Bubble issues in the hydraulic oil system?

Posted by Hamid Shakouri on 3rd Sep 2024

What are Bubble issues in the hydraulic oil system?
Poor air release ability can damage parts of a system by Incomplete oil film coverage on the metal surfaces, Component wear resulting from reduced viscosity, Impaired performance, or failure of hydraulic systems that may manifest as issues like cavitation, erratic control operation, loss of precision control, and vibrations.Many hydraulic systems incorporate a reservoir to facilitate the settling …
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