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ROTAIRLUBRICANTS FOR OIL-INJECTED SCREW COMPRESSORSSECURING OPTIMAL PERFORMANCE

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Why lubricants matterTHE RIGHT LUBRICANTLubricants are essential for the operation of air compressors. For the perfect functioning of your machines you should choose the rightlubricant. ROTAIR line lubricants will ensure optimized performance of your compressors with minimized wear and tear, because ourlubricants have a unique formula designed to realize a compressor’s full potential, maximize its lifetime and keep operational costs to aminimum.Keeping it coolOptimized runningThe lubricant works to cool downthe compression block to protecta compressor from overheatingand breakdowns.Tidying upDuring a compressor’soperation, deposits couldform along the oil path, puttingin danger the unit’s properfunctioning. The right lubricantwill avoid this and eliminate thedirt, safeguarding the integrity ofyour machine.The lubricant works to protectthe machine and its rotating partsfrom wear and tear by providingthe right lubrication film,resulting in proper operation atall time.EssentialSealing air insideThe lubricant providesexcellent sealing in all sectionsof the compression blockto ensure optimum energyefficiency.3

There is no comparisonTAILOR-MADE FOR PERFORMANCEA generic oil is no match for our lubricants. Consisting of abase oil and selected additives, our lubricants all have tailormade formulas to meet the requirements of compressors indifferent operating conditions, from mild to highly demandingenvironments. This is why only ROTAIR lubricants supportoptimal performance of your machines.Other additivesDispersantWater separatorAnti-corrosionBALANCING ACTIndividual additives influence each other’s behavior, the basefluid behavior and ultimately the effectiveness of the lubricant.Add too much of a particular additive, and one or more otheradditives may lose effect. To ensure every additive can performits task, our lubricants have a balanced recipe resulting fromextensive research and development.Anti-foamSolventEmulsifierVI improversBase fluidAnti-wearAnti-oxidant4SPECIFIC APPLICATIONSIn industries such as food & beverage, pharmaceuticals,medical and electronics, oil can cause serious damage to theend product, leading to the loss of entire production lots. Wehave designed a lubricant for these applications, safeguardingproduction even in case of incidental contact with the endproduct. ROTAIR Food Grade has several certifications includingNSF H1, halal, kosher and allergen free.

It’s in the formulaOXIDATION RESISTANCERESISTANCE TO WEARWhen exposed to oxygen, high temperatures, water or dust, theoil will oxidize, creating oxidation products, acids and depositsthat will decrease the oil life and may cause damage andundermine the compressor’s performance.In operating conditions where the lubrication film is notsufficient, moving parts could briefly make contact. Anti-wearadditives form a protective layer on such moving parts andprevent them from getting damaged.PropertiesProperties Slows the lubricant’s reaction with oxygen, water and dust Highly reactive, attaches easily to parts Improves oxidation resistance at higher operating temperatures Forms a protective layer over metal surfacesOxidationOil change is dueExtended lubricantlifetimeRunning hoursNo anti-oxidantCombination of anti-oxidantsBenefits Extends lubricant lifetime Prevents deposits like varnish or sludge Prevents acid formation and metal corrosionBenefits Prevents clogging of filters, blocking of valves, failure onbearings and gears Prevents welding of metal parts Prevents unexpected breakdowns; ensures reliability Protects the compressor element Reduces wear on rotors, bearings and gears5

It’s in the formulaREDUCED VISCOSITY FLUCTUATIONA lubricant’s viscosity (thickness) is influenced by thetemperature to which it’s exposed. When the viscosity changes,the lubricant’s abilities – such as providing the right filmthickness – are also affected.Properties Minimizes the influence of temperature Reduces fluctuations in lubricant viscosityViscosity (film thickness)lowVI ohigh VIiloil-30 C40 COil temperatureBenefits Ensures performance at low and high temperatures Keeps lubricant sufficiently fluid at lower temperatures Prevents cold start issues Prevents small lubrication channels being blocked Ensures sufficient oil film at higher temperatures6100 C

RESISTANCE TO FOAMINGSEPARATING WATERWhen a lubricant is subjected to turbulent flows or pressuredifferences it may begin to foam, weakening its lubricationproperties and increasing its oxidation rate.Depending on the relative humidity of the ambient air and thecompressor type, transit of many liters of water vapor occursduring the compressor’s operation. This increases the rate ofoxidation and reduces the oil’s lubrication properties.Properties Reduces a lubricant’s foaming tendencyProperties Improves the water separability Enhances the lubricant’s phase separationBenefits Protects the system from water and oil emulsions Maintains the lubricant’s original properties Prevents oxidation Lowers condensate concentration Enhanced intervals of the OSC systemBenefits Limits the lubrication’s rate of oxidation Prevents foam from reaching the oil separator element Reduces oil carry-over Maintains lubrication properties Increases compressor efficiency (air bubbles are not compressed twice)7

The risk of not using original lubricants(or changing genuine oils later than specified)EXAMPLES OF FAILURESPutting your trust in generic lubricants can easily become a costly affair. Initial savings realized by choosing alternative oils will ultimatelybe outweighed by the costs of compressor failure, productivity losses or increased energy consumption.Real-life examples of the potential consequences of selecting generic oils instead of original lubricants:ProblemProblemProblemSludge and depositformationMetal to metal contactbetween rotors and bearings,resulting in scratches andpremature wearHigh temperature in the compression block – risk of metal tometal contactCauseCauseCause Low oxidation resistanceproperties Low anti-wear properties Oil viscosityImpactImpactImpact Lower lubricant lifetime Replacement of the element Compressor shutdowns due to high outlet temperature Compression block break down Gear damage becauseof scuffing, requiringreplacement Lower performance in mild and demanding conditions Other parts such as oilseparators suffer fromclogging and valves beingblocked8 Not right oil film thickness

Choosing a generic oilcan significantly increaseyour maintenance costGENERIC LUBRICANTS – THE BIGGER PICTUREPurchasing a generic low-cost lubricant may seem like an effective way to achieve modest cost savings. However, if the generic lubricantcauses deposit formation, provides insufficient lubrication or inadequate resistance to wear, the risk of a breakdown increases. If theelement needs to be replaced after only a few years, the resulting overall cost reveals a different picture.Generic lubricantNew elementChange oil filters and oil separatorsMaintenanceOil change and top ups(35 l/year) 75% overall costOur lubricantMaintenanceOil change and top ups(35 l/year)Based on compressor within power range of 55 – 75 kW9

Choosing the right lubricantUse this table to guide you in selecting the right lubricant.8KROTAIRROTAIR PlusROTAIR e of operation 30 CNoNoMild 30 CYesNoMildROTAIRROTAIR PlusROTAIR Xtra 30 CNoYesMildROTAIRROTAIR PlusROTAIR Xtra 30 CYesYesModerate demandROTAIR PlusROTAIR XtraROTAIR Xtra30 C AT 40 CNoNoModerate demandROTAIR PlusROTAIR XtraROTAIR Xtra30 C AT 40 CYesNoModerate demandROTAIR PlusROTAIR XtraROTAIR Xtra30 C AT 40 CNoYesModerate demandROTAIR PlusROTAIR XtraROTAIR Xtra30 C AT 40 CYesYesHigh demandAT 40 CHigh duty demandAmbient temperature plays a major role8,0006,000ROTAIR XtraSynthetic lubricant4,000ROTAIR PlusPremium Mineral2,000ROTAIR Mineral0102KRH4KAmbient C (AT)30 C40 CROTAIR XtraROTAIR Xtra

ATDustThe average Ambient Temperature of the operation plays a big role in choosingthe right lubricant.The quality of the air depends in large part on the amount of dust. Use thefollowing indications of dust levels in production environments for guidance only;local circumstances may influence the average dustiness.RHRunning Hours per year 2K: basic compressor usage at around 2,000 hours 4K: average compressor usage at around 4,000 hours 8K: intensive compressor usage at around 8,000 hours High dust levels: mining and cement, metal, steel manufacturing and foundries Normal dust levels: food and beverage, automotive, electronics, petrochemical,gas purification, etceteraHumidityThe other important factor in ambient air quality is humidity. Obviously humidity isinfluenced by rain and other weather influences, so use the following geographicalindications for guidance only. Not humid: locations that are not humid most of the year Humid: locations that are humid most of the year- Tropical and megathermal climates- Tropical rainforest climates (Northwest Pacific, Central America, Malaysia)- Tropical monsoon climate (Jakarta, Miami, South America)11

Mastering the competitionROTAIR XTRAPremium lubricant for heavy-duty use in compressors running 8,000 hours per year or more. This top performing lubricant was createdto last under highly demanding operating conditions. ROTAIR Xtra delivers outstanding performance for compressors and contributes toa longer lifetime of parts and components.PerformanceMethodUnitValueDensity at 15 CISO 3675kg/dm30.84Viscosity at 40 CASTM D 445mm /s46Viscosity indexASTM D 2270Foam stabilityASTM D 892ml0/0/0Total acid numberASTM D 974mg KOH/g0.14Pour pointASTM D 97 C-572133Ambienttemperature range0 C to 46 CAppearancetransparentROTAIR PLUSThe perfect match for compressors running between 2,000 to 4,000 hours per year in mild to demanding conditions. Offering reliabilityand steady operation of the compressor all year round.PerformanceMethodUnitValueDensity at 15 CASTM D 1298kg/dm30.88mm /s46Viscosity at 40 CASTM D 445Viscosity indexASTM D 2270Foam stabilityASTM D 892ml/sec l/ll/lll 10/0Total acid numberASTM D 974mg KOH/g0.10Pour pointASTM D 97 C-332102Ambienttemperature range0 C to 35 CAppearancetransparent tolight brownThese characteristics are typical of current production. Variations in these characteristics may occur. Complies with ISO 6743 /3 /1A class L-DAH.12

ROTAIRExcellent choice for compressors below 30 kW with total running hours up to 2,000 hours in mild operating conditions.PerformanceMethodUnitValueDensity at 15 CASTM D 1298kg/dm30.88Viscosity at 40 CASTM D 445mm /s46Viscosity indexASTM D 2270Foam stabilityASTM D 892ml/sec l/ll/lll 20/0Total acid numberASTM D 974mg KOH/g0.95Pour pointASTM D 97 C-332Ambienttemperature range0 C to 30 C98Appearancelight brownROTAIR FoodGradeWho needs it?Safe and protectedIndustries that rely on compressed air to make products whichare not allowed to be contaminated by oil, require a food-gradelubricant. Specifically, industries that have a 0% tolerance for nonfood-grade lubricants.If incidental contact occurs between the compressed air(containing oil vapors) and the end product, it will not result inharmful product contamination.Certifications Pharmaceutics Halal Food and beverage Kosher Electronics NSF – H1PerformanceMethodUnitDensity at 15 CISO 3675kg/dm3Value0.84Viscosity class ISO VGISO 6743mm2/sISO VG46Viscosity indexASTM D 2270Water separation at 54 CASTM D 1401ml oil/water/emulsion40/40/0Foam stabilityASTM D 892ml0/0/0Total acid numberASTM D 974mg KOH/g0.3Pour pointASTM D 97 C-57134Ambienttemperature range0 C to 30 CAppearancetransparentThese characteristics are typical of current production. Variations in these characteristics may occur. Complies with ISO 6743 /3 /1A class L-DAH.13