Technical Data Sheet AeroShell Grease 33

1 Technical data SheetAeroShell Grease 33 Synthetic Grease for aircraftAeroShell Grease 33 is a synthetic universal airframe Grease composed of a lithium complex thickened syntheticbase oil with corrosion and oxidation inhibitors and load carrying useful operating temperature range is 730C to + ApplicationsFor many years aircraft operators have been seeking torationalise the greases used on aircraft and to reduce thenumber of different greases in their inventories. RecentlyBoeing began research on a new, general purpose,corrosion-inhibiting Grease . The aim was for a non-claybased Grease that would provide longer life for componentsand mechanisms and possess improved wear andcorrosion resistance. This led to the introduction of the newBoeing Specification BMS 3-33. Owing to the wide range of operating temperatures, loadsand other environmental conditions required for variousaircraft components, several different types of Grease withdifferent desirable properties are used during routinelubrication of aircraft components.

2 Boeing, in developingtheir BMS 3-33 specification, took account of the propertiesof the different Grease types used on aircraft and wrote aspecification for a Grease which would provide improvedperformance and which could be used in the widestpossible range of Grease applications. AeroShell Grease 33 is approved to BMS 3-33C and offersthe improved performance properties required by thisspecification. AeroShell Grease 33 can be used for routine lubrication onBoeing aircraft where MIL-PRF-23827C or BMS 3-24 isspecified. AeroShell Grease 33 can also be used in someapplications on Boeing aircraft which require use of MIL-G-21164. Other applications on Boeing aircraft which requireuse of MIL-G-21164 and other greases are being reviewedand in due course Boeing will issue details of the full rangeof applications. For the current status, refer to the latestissue of Boeing Service Letter "BMS 3-33C GeneralPurpose Aircraft Grease ".

3 AeroShell Grease 33 can be used for routine lubrication inapplications where MIL-PRF-23827C is specified on aircraftmanufactured by McDonnell Douglas, Airbus, BAe RegionalAircraft, Canadair, Lockheed, Embraer, Fokker andGulfstream (except for wheel bearings, applications above1210C and sliding applications requiring molybdenumdisulphide). Other aircraft manufacturers are evaluating AeroShellGrease 33 with the aim of approving it for use on theiraircraft. Operators should regularly check with thesemanufacturers for the latest status. Use of AeroShell Grease 33 can provide operators with thefollowing benefits: Reduced inventories;Reduced maintenance labour costs;Less chance of product , Approvals & RecommendationsBMS 3-33C MIL-PRF-23827C (Type I) AIMS 09-06-002 COMAC QPL-CMS-OL-302 SAE AMS 3052 NATO Code G-354 For a full listing of equipment approvals andrecommendations, please consult your local Shell & MiscibilityAeroShell Grease 33 contains a synthetic oil and must notbe used with incompatible seal materials.

4 Page 1 of 2 AeroShell Grease 33, v Physical Characteristics These characteristics are typical of current production. Whilst future production will conform to Shell's specification,variations in these characteristics may occur. PropertiesMethodBMS 3-33 CTypicalOil typeSynthetic Hydrocarbon / EsterSynthetic Hydrocarbon / EsterColourBlue-greenGreenThickener typeLithium ComplexLithium ComplexBase Oil viscosity@-400 Cmm2/sASTM D4451 840 Base Oil viscosity@400 Cmm2/sASTM Oil viscosity@1000 Cmm2/sASTM operating temperaturerange0C-73 to +121-73 to +121 Dropping point0 CASTM D556205 min227 Worked penetration@250 CASTM D217265 to 315297 Bomb Oxidation pressuredrop from 758 kPa (110 psi)100 hrs@990 CkPa (psi)ASTM D94270 (10) ( )Bomb Oxidation pressuredrop from 758 kPa (110 psi)500 hrs@990 CkPa (psi)ASTM D942105 (15) max34 (5)Oil separation 30 hrs@1000C%mASTM D61848 max2 Water Washout@790C%mASTM max<6 Evaporation loss 500 hrs@1210C%mASTM D259510 max<10 Anti-friction bearingperformance@1210 ChrsASTM D33361000 min>1 200 Load Carrying Capability LWI@270 CkgASTM D259660 min>60 Copper corrosion 24 hrs@1000 CASTM D40481B maxPassesHealth, Safety & EnvironmentHealth and Safety AeroShell Grease 33 is unlikely to present any significant health or safety hazard when properly used in the recommendedapplication and good standards of personal hygiene are on Health and Safety is available on the appropriate Safety data Sheet , which can be obtained contact with skin.

5 Use impervious gloves with used oil. After skin contact, wash immediately with soap and the Environment Take used oil to an authorised collection point. Do not discharge into drains, soil or InformationAdvice Advice on applications not covered here may be obtained from your Shell 2 of 2 AeroShell Grease 33, v