One of the keys to keeping your vacuum pump in good working order is ensuring that it is operated properly and that the lubricating oil or fluid used in its operation meets the full requirements of the pump. Beyond reducing friction, your vacuum pump oil assists in cooling, controlling contamination, protection from corrosion, and creating fluid seals in the pump. Depending on your application, an oil’s volatility, vapour pressure and viscosity all play a part in achieving peak performance.
An oil with high volatility is more likely to turn from a liquid to a vapour as the temperature increases. Vapour pressure is the pressure with which the oil molecules try to escape the oil as vapour, since there is a tendency for liquids to evaporate. What this means is that a lower vapour pressure is preferred because less evaporation means less variance in the overall pressure and the pump performs more efficiently.
Viscosity is often the primary consideration when selecting vacuum pump oil. The viscosity of a fluid is a measure of its resistance to flow – so low viscosity is thin and runny while high viscosity is thick and sticky. This is determined by the size of the molecules in the fluid. The essential consideration is that as temperatures rise, the viscosity of the fluid decreases and that can impact the flow of the oil as well as the seal between components. This is why it is so important to know what your pump requirements and applications are so you can choose the right oil to keep things running smoothly.
Additives in a motor oil differ from what might be found in a vacuum pump oil because they serve distinctly different functions. For example, motor oil may contain rust inhibitors that would separate from the base fluid and deposit on interior services as a gummy residue. Vacuum pump oil, however, is refined for use in a vacuum pump and may contain additives for corrosion resistance, anti-oxidation and anti-foaming. It is critical to understand the performance requirements of your vacuum pump as oils will react differently under high temperature and pressure conditions and the wrong oil can damage the vacuum pump while the right oil can promote long and healthy equipment life.
The choice of vacuum pump oils and fluids can seem difficult. We know that making the right fluid choice can mean the difference between a smooth running operation and frustrating down time. To help make your selection, check out this handy Leybonol lubricant guide before you buy. Still not sure? Give us a call at 800-959-5517 so we can help. And remember…our online store is open 24/7!
Leybold is the first vacuum pump manufacturer to test the diverse application possibilities of Augme...
Changing your rotary vane vacuum pump oil is essential, but when should you do it? We discuss some g...
Your vacuum pump is a significant investment and one we are confident you will enjoy for years to co...
This is one question we get asked a lot at Intlvac. The short answer is ‘it depends’ meaning that ...
Your vacuum pump isn’t working. Or maybe it’s making a strange noise that you haven’t heard befor...
The requirements for modern analytical instruments and systems are changing: users in laboratories a...
Visit our vacuum pump blog and news page to reinforce your understanding of vacuum service and how to choose the right vacuum for you.
247 Armstrong Avenue, Unit 6, Halton Hills, Ontario L7G 4X6
(905) 873-0166 (800) 959-5517 email@example.com
Click here to visit Intlvac Thin Film Systems website
Subscribe to receive the latest vacuum pump promotions and discounts exclusive to subscribers.