10 Ways to Ensure Effective Oil Analysis

Unplanned downtime disrupts business operations; effective oil analysis plays a vital role in looking after your machinery…

With 70 to 80 percent of all hydraulic failures being down to fluid contamination, it’s not exactly rocket science to say that ensuring regular, effective oil analysis should always be high on the agenda.

System DesignHydraulic component contamination is categorised in three ways: gaseous, liquid or solid. Gaseous contamination can damage a hydraulic system’s lubricating properties, creating wear and increasing the chances of other types of contamination. Liquid contamination not only alters the capabilities of the lubricating properties, but also causes rust. Solid contamination can cause valve blockages, substantial pump damage and blown seals and gaskets. All of these causes are completely avoidable.

Effective oil analysis – ten ways to keep your oil clean:

1. Monitor – Hydraulic fluid should be monitored routinely and sampled on a quarterly basis.

2. Identify – Identify what sort of contaminant may be present (solid, liquid or gas) to ensure that the right kind of analysis in undertaken.

3. Find the source – By identifying the source of the contamination, preventative action can be taken. This may include contamination as a consequence of the equipment manufacturing process, air borne contamination or contamination produced as a result of the equipment in operation.

4. Neutralise – Offset the causes, and minimise the consequences of contamination either through: oil transfusion, installing extra air filters and replacing worn or damaged components.

5. Benchmark – All oil analysis codes are based off a code: ISO 4406. The relevant benchmark depends on the application in question.

6. Filter – Using hydraulic filters and filtration equipment can, in many cases, stop oil contamination. Determining flow rates, viscosity and pressure are necessary to finding the right filtering system. As a leading hydraulic filter supplier we have widespread, competitive access to both leading and niche hydraulic filter manufacturers from around the world. Some of the hydraulic filter manufacturers and brands that we can supply include: Argo HytosDonaldsonEaton Vickers, Hydac, Ikron, MP Filtri and Parker hydraulic filters. Our technical team will be able to determine which filtration equipment is most suitable for your application.


Hydraulic Filters - Effective Oil Analysis


7. Analyse – In order for oil analysis to be reliable, an in-depth inspection will need to be carried out. This may be in a laboratory environment through microscopic particle count and gravimetric testing, or through a mobile particle counter installed on the machine.

8. Predict – Recording results will allow you to spot trends and identify possible future risks. This is hugely important to lessen unexpected machinery downtime and schedule future inspections in good time.

9. Prevent – To help prevent contamination:

  • Always make sure oil is filtered;
  • Change oil filters every 12 weeks;
  • Take oil samples every 12 weeks to check cleanliness level;
  • Install air breathers to reduce contamination.

10. Invest – There is, of course a cost involved in ensuring effective oil analysis, but it is  nothing compared to the cost of a replacement pump or even a complete system, lost production and goodwill.

And don’t forget…

Hydraulics Online have a wealth of experience in hydraulic system design and components. If you’d like to make an enquiry or you’d just like more information, you can call or send and email to one of our friendly technical team. If you’d like to see another blog on hydraulic systems design, click here.

Danfoss Hydraulics

Previously known as “Sauer Danfoss”, Danfoss officially changed their name to “Danfoss Power Solutions” in 2013 but they are still often referred to as Danfoss hydraulics. Starting as a individual enterprise in the United States in 1933, Danfoss is now a huge organisation working all over the world. They also operate under an umbrella of five other brands: Turolla, Comatrol, Schwarzmüller-Inverter, Valmova and Hydro-gear.

The Danfoss hydraulics product range delivers consistent quality and reliability…

It includes:

  • Danfoss T seriesO series and V series orbital motors – the biggest variety of orbital motors on the market. Known for their solid reliability, durability and high efficiency, Danfoss hydraulics orbital motors are ideal for agricultural, road building, construction, forestry, public utility and lawn and garden equipment:

Danfoss hydraulics orbital motors

  • Danfoss PVG proportional valves (types: PVG, PVG 16, PVG 32, PVG 100 and PVG 120) – delivering flexible, modular  electrohydraulic valves that ensure smooth machine control from simple-load sensing to CAN bus solutions:

Danfoss hydraulics proportional valves

Danfoss hydraulics piston pumps and motors

Danfoss hydraulics steering

So, why choose Hydraulics Online for your Danfoss hydraulics and other hydraulic equipment supplies?

Whether or not your requirements are straight forward, whether you have time on your side or needed something “yesterday”, you can rest assured knowing that, with over 75 years’ technical experience and our ISO 9001:2008 accreditation under our belt, you’ll be in safe hands.

DanfossOur technical team regularly supply Sauer Danfoss hydraulics and components to occasional, incidental users, like the UK golf course looking for a Danfoss OMT 315 FH motor for their grass cutting machinery, through to overseas original equipment manufacturers looking for regular, scheduled and dependable supplies. (Pictured: Danfoss closed loop transmission pump and 15 motors.)

Danfoss pump motors setsMany of the Sauer Danfoss hydraulics and components we supply can often be offered as a direct equivalent for other branded products. A customer asked the team to quote for 8 Bosch Rexroth pump-motor sets, which, of course we did… But knowing the lengthy lead time we also provided a quote for an equivalent – Danfoss Series 90, 75 kw pump-motor sets with half the lead time. End result: a happy customer!

We love working with Original Equipment Manufactures, helping them to increase the value of their brand and product range; Sauer Danfoss pumps are regularly called for by OEMs all ove the world. Pictured on the left is a rather handsome Sauer Danfoss hydraulics Series 45 variable displacement piston pump – shipped to a customer in the very remote, but beautiful Shetland Islands.

If we’ve not quite convinced you to try us for your Danfoss hydraulics, then there are plenty more cases studies and testimonials for you to browse. We hope to hear from you soon.

There’s plenty more Danfoss Power Solutions where that came from! We’re asked for Danfoss components on a regular basis, so if you’d like to see another product, click here.

Sauer DanfossDanfoss Power Solutions

“Can you let the boys know that they are providing us with great service, parts and information in all our locations. Your service is prompt and reliable; you’re our “go to” guys when it comes to hydraulics.”

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