Aeroshell Grease 33 is a synthetic universal air frame grease composed of a lithium complex thickened synthetic base oil with corrosion and oxidation inhibitors and load carrying additives.
AeroShell Grease 33 is approved to BMS 3-33B and offers the improved performance properties required by this specification and the other specifications mentioned above. AeroShell Grease 33 can be used for routine lubrication on Boeing aircraft where MILPRF-23827C or BMS 3-24 is specified. AeroShell Grease 33 can also be used in some applications on Boeing aircraft which require use of MIL-G-21164. Other applications on Boeing aircraft which require use of MIL-G-21164 and other greases are being reviewed and in due course Boeing will issue details of the full range of applications. For the current status, refer to the latest issue of Boeing Service Letter “BMS 3-33 General Purpose Aircraft Grease”. AeroShell Grease 33 can be used for routine lubrication in applications where MIL-PRF-23827C is specified on aircraft manufactured by McDonnell Douglas, Airbus, BAe Regional Aircraft, Canadair, Lockheed, Embraer, Fokker and Gulfstream (except for wheel bearings, applications above 121°C and sliding applications requiring molybdenum disulphide).
- Load: 160kg; Speed: 1770 rpm
- Duration: 10 seconds, or until weld occurs, whichever comes first
- Test cup rotates on test block under load while being continuously fed with fresh grease
- Load: 40lbs; Speed: 800rpm
- Duration: 10 minutes, or until noise and vibration indicate failure, whichever comes first.
- Wear scar measured on completion of test
- Bearings: Timken cone and roller assembly
- Procedure: bearings packed with test grease and rotated under light load for 60 seconds, then submerged in 3% salt solution for one minute and then stored at 52ºC and 100% humidity for 12 hrs. Bearings disassembled and bearing races examined for rust.
AeroShell Grease 33 - taking airframe lubrication into the next millennium.