Technical Data Sheet AeroShell Grease 33 - Sign In

1 Technical data SheetAeroShell Grease 33 AeroShell 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.

2 This led to the introduction of the newBoeing Specification BMS 3-33B. 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. Boeing, in developingtheir BMS 3-33B specification, took account of theproperties of the different Grease types used on aircraft andwrote a specification for a Grease which would provideimproved performance and which could be used in thewidest possible range of Grease applications.

3 AeroShell Grease 33 is approved to BMS 3-33B 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 3-33B GeneralPurpose Aircraft Grease ".

4 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 & : Approved MIL-PRF-23827C (Type I ) Boeing : Approved BMS 3-33B Airbus: Approved AIMS 09-06-002 COMAC Approved to QPL-CMS-OL-302 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.

5 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. PropertiesBMS 3-33 BTypicalOil typeSyntheticHydrocarbon / EsterSynthetic Hydrocarbon / EsterThickener typeLithium ComplexLithium ComplexBase Oil viscosity@-400 Cmm2/s-1840 Base Oil Oil operating temperature range0C-73 to +121-73 to +121 Drop point0C-216 Worked penetration@250C265 to 315297 Unworked penetration@250C-290 Bomb Oxidation pressure drop from758 kPa (110 psi) 100 hrs@990 CkPa (psi)70 (10) ( )Bomb Oxidation pressure drop from758 kPa (110 psi) 500 hrs@990 CkPa (psi)105 (15) max34 (5)

6 Oil separation 30 hrs@1000C% m-2 Water resistance test loss@790C% max< 6 Evaporation loss 500 hrs@1210C% m10 max< 10 Anti-friction bearing performance@1210 Chrs-1200+Mean Hertz Load-60 Copper corrosion 24 hrs@1000 CMust passPassesBearing protection 2 days@520 CMust passPassesColourBlue-greenGreenHealth, Safety & EnvironmentHealth and Safety Guidance on Health and Safety is available on the appropriate Material Safety data Sheet , which can be obtained 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