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adapt flow and pressure. Electrified alternatives often use speed-controlled electric motors with constant pumps – resulting in smarter, more efficient control and less heat buildup. Therefore, electrified machines need lower-viscosity oils with flatter viscosity- temperature curves. Oil selection and viscosity are crucial. The degree of electrification depends on power demand and energy supply options, including mobile batteries or hybrid solutions.
Sustainable operation Sustainability and CO2
footprints are become even
more important. True sustainable operation goes beyond just using a “green” or bio-oil. It includes using high-quality, long lasting, energy efficient products, plus proper oil monitoring and care. These measures must be combined, not viewed in isolation. The right oil lasts longer and protects components. When using bio-oils is practical and economical, it should be pursued. Different attachments can cause oil mixing, so clear labeling, trained staff, and minimising oil types help reduce this risk, especially with both bio- and mineral oils in use.
Effective monitoring detects problems early, before failures occur. Combining online sensors with
offline lab analysis is ideal. Online sensors provide immediate alerts; lab tests reveal root causes. Proper oil care starts upon delivery, with clean storage and handling preventing contamination. For sensitive systems, filtering oil before use is recommended. If contamination occurs, bypass filtration helps prevent damage by removing particles and water immediately. This extends the lifespan of both oil and machine.
Hydraulic fluids as machine elements Hydraulic and lubricating oils should no longer be treated as mere auxiliary materials but as an asset. A hydraulic system won’t function for even a second without its fluid. Though oil costs are a small portion of machine expenses, improper handling can cause disproportionate damage. Achieving full oil service life is a realistic and worthwhile goal for both cost savings and environmental protection.
This article is based on an extensive article by Rüdiger Krethe, published first in “Schmierstoff und Schmierung”, 1/2025 (in German language).
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www.vsi-schmierstoffe.de
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