Oils / Greases / Lubricants Oil Grea

Diffusion Pump OilsPump fluids for oil diffusion pumpsmust exhibit a low vapor pressure atroom temperature and must be able toresist thermal decomposition and oxidization to a large extent. Surface tension of the pump fluids must be high toreduce creep of oil films. They must bechemically inert, exhibit a high flashpoint and evaporation heat must below. Moreover, the pump fluids shouldpermit high pumping speeds over awide range of pressures and be costeffective.One type of pump fluid alone cannotmeet these comprehensive requirements.It is therefore required to select a pumpfluid according to the operating pressure and the requirements of the application in each case.Mineral oils(LEYBONOL LVO 500 andLVO 510)Mineral oils for diffusion pumps areclosely toleranced fractions of a highquality base product distilled with particular care.These pump fluids are especially suitedfor work in a high vacuum.(LEYBONOL LVO 540)is a hydrocarbon compoundLVO 540 has been developed for utilisation in oil vapour jet pumps.It is thermally and chemically highlyresistant and excels through a highdegree of oxidation resistance.It delivers the essential high pumpingspeed of the vapour jet pumps in themedium vacuum range.Silicone oil(LEYBONOL LVO 520)Silicone oils are composed of preciselydefined chemical compounds and arehighly resistant. Owing to their extremely low vapor pressure, silicone oilsare particularly well suited as a workingfluid. Even after numerous air inrushes,silicone oils suffer neither ageing normass spectrometrically apparent alterations.Strong mineral acids, alkalis and strongoxidants are capable of decomposingsilicone oils.Safety data sheets are available to professional users from:e-mail “documentation.vacuum@leybold.com” or Internet “www.leybold.com”.8Leybold Full Line Catalog (Edition 02/2019) - Oils / Greases / Lubricantsleybold

Special Lubricants(LEYBONOL LVO 7XX)For example, LEYBONOL LVO 700 isa H1 registered, extremely stable special lubricant for vacuum pumps.This special lubricant has been devel-oped for special applications wherereactions with chemically active substances cannot be avoided.Greases are solid to semi-solid substances which consist of the principalcomponents base oil and thickener.formance of the grease in specificareas depending on the specific application.The base oil provides most of the lubrication and will in most cases define theservice temperature. The thickenerbinds the oil and can increase the lubricity or the thermal stability of the grease.As base oils, frequently mineral oils,synthetic oils on the basis of ester oils,PAOs, silicone oils or also PFPE (perfluoropolyethers) are used.Greases will reduce friction and wear,ensure moveability of components, willseal off against contaminants or areused as anti-rust and anticorrosionagents.All special lubricants are summarisedunder the name of LEYBONOLLVO 7xx which are used in connectionwith special applications.Greases(LEYBONOL LVO 8XX)Added to these two constituencies areadditives which may improve the per-Thickeners are roughly categorised insoap thickeners like lithium, for example and non-soap thickeners like polyurea or PTFE.Through the selection of correspondingbase oil types, thickeners and additives, greases can be optimised for different applications.Oils / Greases /LubricantsSafety data sheets are available to professional users from:e-mail “documentation.vacuum@leybold.com” or Internet “www.leybold.com”.leyboldLeybold Full Line Catalog (Edition 02/2019) - Oils / Greases / Lubricants9

General Information and Recommendationsfor OilsLubricant FunctionsCoolingSealingThe term “Lubricant” actually describesonly one of the five important functionsof the oil:The oil conducts the heat produced byfriction and gas compression away sothat the pump will always be operatedat its optimum operating temperature.The oil here functions as a coolant.As a sealing agent oil improves theattainable ultimate pressure and theattainable pumping speed. This is theprincipal function of vacuum pump oil.Oil sealed pumps are capable of attaining a much improved ultimate pressure compared to oil-free rotary vanepumps of similar construction.LubricationOil is used as a lubricant helping toreduce friction and provide a protectivefilm against mechanical wear.For example, the vanes of a vacuumpump are forced by the centrifugalforce against the pump ring at a forceof several Newtons. The oil protects thevanes against friction since they slidealong on the oil film. When viewing arunning pump from the inside usingstroboscopic light it is apparent how anoil wave builds up in front of the vanes,pressing the vanes away from thepump ring. The vanes never touch thepump ring or the bearing coversallowing the pump to operate for10,000s of hours.10Means of transport (dispersing properties of oils)As a means of transport the oilabsorbs process substances or otherparticles keeping them suspended (dispersed). In this way pump sections areprotected against suffering damage.Sludge deposits and oil thickening shallbe avoided.Corrosion ProtectionIn oil sealed pumps an oil film is created on the guiding components as wellas on the tips and sides of the vanes.The oil seals the intermediate spacesaround the edges and tips of the vanesthereby preventing gas molecules fromflowing back through leaks.This improves the attainable ultimatepressure and the attainable pumpingspeed within all pressure ranges.The oil shall protect the inner pumpsurfaces against corrosion. Corrosioncan occur when the pump is used topump water vapor or other chemicalvapours which condense. The oil wetsand protects the inner pump surfaceshelping to keep condensate away fromthese. The oil acts as a corrosion inhibitor.Applies only to a lesser extent to PFPE(LVO 4XX).Leybold Full Line Catalog (Edition 02/2019) - Oils / Greases / Lubricantsleybold

Oil LifetimeOil CheckOil lifetime is dependent on a numberof parameters.An important influencing factor is thatof the temperature. Mineral oils arecommonly specified for a maximumtemperature limit of 80 C (176 F).Above this temperature, to put it simply, it can be said that a temperatureincrease by 10 C (50 F) will cut oil lifetime in half. This results in thickening ofthe oil.Synthetic oils may depending on thetype be operated constantly at 100 to160 C (320 F). PFPE oils can be operated constantly at a temperature of250 C (482 F) max., however, lowermaximum temperatures need to betaken into account depending on theprocess medium.PFPE oils are not subject to any typicaloil ageing since they are almost inert(for this see also the chapter “VacuumPump Oils”, paragraph Perfluoropolyethers PFPE).When operating a pump under conditions which are too cold, then watervapor or other vapours may condense.The condensed liquid may then causea loss of the lubricating properties orcause corrosion within the pump.The following parameters amongothers have a direct influence on the oiltemperature:- Ambient temperature- Operating pressure- Operating frequency 50 or 60 Hz- Temperature of the pumped gases- Gas ballast type and flow- Water or air cooling- Cooling water temperature and condition of the cooling water circuit- Oil volumeA further important factor regarding oillifetime is the avoidance of influenceswhich have a modifying effect on the oillike the ingress of reactive or ag-gressive substances, water vapor, dust orcontaminants in general.For dispersion of process media andcleaning of the oil by oil filters, we offera number of different standard approaches.Please contact us.Our experts shall be pleased to assistyou in the selection process for suitableaccessories (for this refer also to paragraph “Oil Cleaning”).The condition of the oil can be determined by way of an oil analysis.Assessing the colour of the oil alonedoes not indicate the condition of thelubricant in a conclusive way. Colourchanges and a turbid appearance ofthe oil can be indicative of contamination with foreign substances or oxidation. A turbid appearance may be indicative of water, for example. Dependingon the type of oil a dark discolourationof the oil can occur already after a fewoperating hours, but without any negative effects on the application as in thecase of LVO 210, for example.For this reason only a comparison between the fresh oil and the used oilthrough an analysis will help (see chapter “Services”). For the purpose ofdetecting a necessary oil change, viscosity and the neutralisation number(TAN - total acid number) are analysedin comparison with fresh oil.Changes in viscosity exceeding 20%necessitate an oil change. If the neutralisation number (TAN) in the case ofmineral oils and PAOs increases to alevel of 2 mg KOH/g then an oil changeshould be done. Above this valueageing of a mineral oil or PAO will increase exponentially.Oils / Greases /LubricantsIn the case of ester oils, a higher neutralisation number can be acceptedsince here oil ageing will not be exponential. However, this requires thattrend analyses confirm a low increaseand that the other oil data be inconspicuous.leyboldLeybold Full Line Catalog (Edition 02/2019) - Oils / Greases / Lubricants11

Oil CleaningOxygen ApplicationsLeybold offers a number of differentstandard oil filter devices.In applications in which pure oxygen oroxygen concentrations exceeding thatin the atmosphere (over 21% by volume) occur, suitable operating meansmust be used.These include:- Mechanical oil filters for depositingdust, crystalline decomposition products and sludge- Chemical oil filters for separatingsubstances dissolved in the oil byway of adsorption to activated aluminium oxide- Various separators for the intakeside for avoiding the ingress of process media into the pumpPlease contact us.Our experts shall be pleased to assistyou in the selection process for suitableaccessories.Details on the respective pump accessories and additional information canalso be found in the correspondingCatalog Part.Oxygen reacts with hydrocarbons. Inconnection with mineral oil based lubricants and most synthetic oils thereexists an ignition risk. Oxygen cancause a self-ignition of oils and greases.Even a slight oxygen enrichment mayhave the following effects:- Increase in the rate of combustion- Combustion temperature increase- Decreased ignition temperatureFor this reason any oxygen concentration above that of the atmosphere needsto be considered as hazardous.In such cases a perfluoropolyether(PFPE) will be suitable as the operatingagent.Leybold has in its product range special vacuum pumps specified for PFPEoperation which are free of hydrocarbons.Information for SmoothOperation- Reactive or aggressive substancesin the pumped flow can inadmissibility stress the operating oil or modifyit and may even be incompatiblewith the materials of the pump- Even small quantities of dust or particles can result in failures- Pumping of liquids is not permissible- Corrosion, deposits and severe oilcracking can cause a pump failure- Avoid standstill corrosion of thepumps for all processes which involve condensable vapours- Small quantities of water may beejected safely by operating thepumps with their gas ballast- Avoidance of oil modifying influencesor increased number of oilchange intervals adapted to the specific application- Selection of the optimum lubricanttype and optimum viscosity- Regular checks on the oil conditionand the filters- Pump maintenance in regular intervals- Keep thermal stresses low- Oil cleaning by oil filters and separation of process mediaMoreover, all safety regulations regarding explosion protection need to beobserved.12Leybold Full Line Catalog (Edition 02/2019) - Oils / Greases / Lubricantsleybold

Storage of LEYBONOL Oils and GreasesLEYBONOL OilsLEYBONOL Greases- Storage temperature 10 to 30 C( 50 to 86 F)When stored properly in sealed originalcontainers, the following durability periods apply:- The containers should be protectedagainst direct sunlightThe product LEYBONOL LVO 240exhibits a durability of two years.Durability of the LEYBONOL greasesdiffers widely depending on their type.For this reason no general statementcan be made.Important recommendations for properstoring all LEYBONOL lubricants are:- Drums should be stored horizontally- Storage in enclosed indoor rooms- The storage rooms should be cleanand dryFor the PFPE products LEYBONOLLVO 4XX a durability of 20 yearsapplies.For the other LEYBONOL oils durabilityis at least 3 years.Upon request we shall be pleased tosend to you precise durability information on the individual LEYBONOL lubricants.RestrictionsFor sealed original containers: if theproduct is not stored properly, durabilityis reduced.Oils / Greases /LubricantsAfter the containers have been opened:Adequate precautions against theingress of dust, dirt, water etc. need tobe introduced and the contents mustbe used up speedily. After having opened the containers once, durability ofthe product is reduced.leyboldLeybold Full Line Catalog (Edition 02/2019) - Oils / Greases / Lubricants13

ProductsLEYBONOL Mineral OilsApplication DataLVO 100LVO 120LVO 130Type of oilMineral oil, free of additivesMineral oil with additivesMineral oil with additivesPropertiesLow vapor pressure,,low inclination to foaming,very good water separationStandard oil for low ultimatepressures.Extended oil change intervals,low inclination to foaming, verygood water separationStandard oil for smallSOGEVAC pumps 2)Extended oil change intervals,low inclination to foaming, verygood water separationStandard oil for largeSOGEVAC pumps 2)Pumping of air,chemically inert gases andwater vaporPumping of air,chemically inert gases andwater vaporPumping of air,chemically inert gases andwater vaporSuitedConditionally suitedUnsuitableSuitedConditionally suitedUnsuitableSuitedConditionally suitedUnsuitableTRIVAC, E DK, RUVACSOGEVAC A-series( SV 65) and B-series( SV 25, SV 120 BI (FC))Application examplesElastomer compatibilityFKM (FPM, Viton)NBR (Perbunan) 1)EPDMUsed in the pumps of seriesSOGEVAC A-series( SV 100) and B-series( SV 40 B)Technical DataLVO 100LVO 120LVO 130ISO viscosity gradeISO VG 100ISO VG 32ISO VG 68Viscosityat 040 C (104 F)at 100 C (212 F)mm2/smm2/s9510.5325.5689Flash point C ( F) 255 ( 491)244 (471)248 (478)kg/m3880875885 C ( F) -9 ( 16)-27 (-17)-21 (-6)LVO 100LVO 120LVO 130Part No.Part No.Part No.00.5 liters–L 120 00–001 litersL 100 01L 120 01L 130 01002 liters–L 120 02L 130 02005 litersL 100 05L 120 05L 130 05020 litersL 100 20L 120 20L 130 20208 litersL 100 99–L 130 99Density at 15 C (59 F)Pour pointOrdering InformationPlease note that the technical data stated are typical characteristics only. Slight variations from batch to batch must be expected.The technical data stated here do not entail any warranted characteristics1)Resistance is dependent on the level of the acrylonitrile content in the NBR1)LVO 120 is suited for the SOGEVAC SV 25 B and smaller pumps where the lower viscosity assists the starting process.LVO 130 is suited for the SOGEVAC SV 40 B and larger pumps where the higher viscosity assists attaining of lower pressures.However, all SOGEVAC pumps can be operated with both types of oil and moreover, LVO 120 and LVO 130 can be mixed with each other.14Leybold Full Line Catalog (Edition 02/2019) - Oils / Greases / Lubricantsleybold

Application DataLVO 140LVO 150LVO 170Type of oilMineral oil with additivesMineral oil with additivesMineral oil with detergent additivesPropertiesSuitable for use in the food &packaging industrySuitable for use in the food &packaging industryRecommended for applicationsin the food industryRecommended for applicationsin the food industryHigh detergency,high thermal stability,low inclination of foamingHeat treatment, low pressurecarburizing process and otherprocesses creating tar or sootSuitedConditionally suitedUnsuitableSuitedConditionally suitedUnsuitableSuitedConditionally suitedUnsuitableSOGEVAC A-series( SV 65) and B-series( SV 25 B)SOGEVAC A-series( SV 100) and B-series( SV 40 B)SOGEVAC A-series( SV 100) and B-series( SV 40 B)Technical DataLVO 140LVO 150LVO 170ISO viscosity gradeISO VG 32ISO VG 68ISO VG 100Application examplesElastomer compatibilityFKM (FPM, Viton)NBR (Perbunan) 1)EPDMUsed in the pumps of seriesViscosityat 040 C (104 F)at 100 C (212 F)mm2/smm2/s30563895.611Flash point C ( F)225 (437)253 (487) 110 (230)kg/m38608700.889 C ( F)-18 (-0.4)-18 (-0.4)-24 (-11.2)LVO 140LVO 150LVO 170Part No.Part No.Part No.001 literL 140 01L 150 01–020 liters–L 150 20L 170 20Density at 15 C (59 F)Pour pointOrdering InformationPlease note that the technical data stated are typical characteristics only. Slight variations from batch to batch must be expected.The technical data stated here do not entail any warranted characteristicsResistance is dependent on the level of the acrylonitrile content in the NBROils / Greases /Lubricants1)leyboldLeybold Full Line Catalog (Edition 02/2019) - Oils / Greases / Lubricants15

LEYBONOL Ester OilsApplication DataLVO 200LVO 210Type of oilSynthetic oil (ester oil with additives)Synthetic oil (ester oil with additives)PropertiesVery high thermal, oxidativeand chemical stability,good deterging/dispersion characteristics,excellent wear protectionVery high thermal, oxidativeand chemical stability,good deterging/dispersion characteristics,excellent wear protectionApplication at increased temperaturesApplication at increased temperaturesStarting of the pump between 0 and 12 C(32 and 64 F)Pumping of air, inert gases,carbon dioxide (dry), carbon monoxide,organic solvent vapours,resin vapoursApplication examplesPumping of air, inert gases,carbon dioxide (dry), carbon monoxide,organic solvent vapours,resin

LEYBONOL LVO 2XX Ester Oils 16 LEYBONOL LVO 3XX PAO Oils 19 . Example for LVO 100 L 100 01 001 liter L 100 05 005 liters L 100 20 020 liters L 100 99 208 liters (d