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FEATURE SPONSOR


OILS & LUBRICANTS


There are three types of contamination which can be identified by oil analysis…


1 The first is solid particles, such as dirt and dust which can cause jamming; influence control behavior, prematurely wear components leading to failure and a reduction in machine availability.


2 The second type is liquid contamination which are in the main water and fluid mixtures. This type of contamination can cause corrosion and wear, along with impairment of viscosity and even cause a chemical reaction with the fluid which can impact lubricating properties.


3 Finally, gaseous contamination, such as air, can have a number of serious consequences. Foaming in the oil sequences; inaccurate response of valves; energy loss; damage to pumps; chemical reactions with the fluid and oxidation, can all result in a reduction in machine availability.


These failures are directly attributable to oil contamination, via components such as cylinder rods. What’s more, once in place, there is often a chain reaction of particles. One particle rubbing against another breaks off and splits into two. Two particles split to become four and four become eight. Often, the solution is simple, such as the installation of offline filter units.


TIME AND RESOURCES


The problem for many maintenance teams is time and resource. While oil analysis can be incredibly effective as part of a preventive maintenance programme, it does take valuable time which takes engineers away from more critical, problems which they encounter every day. All-too-often, no oil analysis is undertaken or the schedule falls by the wayside as more critical issues take priority.


Oil analysis, such as the Bosch Rexroth oil analysis service can identify how much particulate is potentially affecting the smooth running of a machine. What’s more a recognised industry standard is now in place, ISO 4406, which measures 100 millilitres of oil and gives a particulate reading.


PREVENTING CONTAMINATION Only regular oil analysis can prevent build-up of particulates and ensure the machine stays available 100 per cent of the time. Cleanliness of the oil is crucial and is a far superior method of identifying potential problems than component monitoring and offers the opportunity to identify appropriate levels of filtration and if necessary, upgrade.


Monitoring oil cleanliness is therefore the most important factor to prevent failures and should become a must in any modern maintenance and servicing regime.


Chris Gray


Filtration Product Manager Bosch Rexroth


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www.windenergynetwork.co.uk


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