On order
AeroShell Grease 14
Multi-purpose helicopter grease, anti-fretting, −54 to +93 °C
NATO Code G-366
Specifications
- Brand
- Shell
- Category
- Aviation greases
- Manufacturer code
- 001A0903
- Availability
- On order
Approved for
Typical characteristics
| Property | Typical value | Limit |
|---|---|---|
| Oil type | Hidrocarburi sintetice / Ester | Hidrocarburi sintetice / Ester |
| Tip de ingrosator | Complex de litiu | Complex de litiu |
| Viscozitate Base oil @-40°Cmm2/s | 1840 | |
| Viscozitate Base oil @40°C | 14.2 | |
| Viscozitate Base oil @100°Cmm2/s | 3.4 | |
| Intervalul temperaturilor de functionare°C | -73 la +121 | -73 la +121 |
| Dropping point°C | 216 | |
| Worked penetration @25°C | 297 | 265 la 315 |
| Penetration nelucrata @25°C | 290 | |
| Oxidation stability prin Bomb method - caderea de presiune de la 758 kPa, 100 hours @99°C | 3.5 (0.5) | 70 (10) max |
| Oxidation stability prin Bomb method - caderea de presiune de la 758 kPa, 500 hours @99°C | 34 (5) | 105 (15) max |
| Oil separation 30 hours @100°C%m | 2 | |
| Rezistenta la apa @79°C | <6 | 7.5 max |
| Pierderi prin Evaporation 500 hours @121°C%m | < 10 | 10 max |
| Performanta antifrecare rulment @121°C | 1200+ | |
| Sarcina Hertz | 60 | |
| Copper corrosion 24 hours @100°C | trece | trebuie sa treaca |
| Protectie rulment 2 days @52°C | trece | trebuie sa treaca |
| Colour | verde | verde-albastrui |
Complete documentation
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Manufacturer's description
AeroShell Grease 33 is a universal synthetic airframe grease composed of a lithium complex thickener and synthetic base oils, with oxidation and corrosion inhibitor and load carrying additives. For use in the temperature range –73 0C to +121 0C.
Applications
- For many years, aircraft operators have sought to rationalise the greases used on board aircraft and to reduce the number of different greases in their inventories. Recently, Boeing began researching a new multi-purpose, anti-corrosion grease. The aim was for a clay-free grease that would give longer life to components and mechanisms and that would have improved wear and corrosion resistance. This led to the introduction of a new Boeing specification, BMS 3-33B.
- Given the wide range of operating temperatures, loads and other environmental conditions required for different aircraft components, many different types of grease, with different properties, are used in the routine lubrication of aircraft components. In developing their BMS 3-33B specification, Boeing considered the properties of the various grease types used for aircraft and wrote a specification for a grease that would deliver improved performance and could be used across the widest possible range of grease applications.
- AeroShell Grease 33 is approved to BMS 3-33B and delivers the improved performance characteristics required by that specification.
- AeroShell Grease 33 can be used for routine lubrication on Boeing aircraft where MIL-PRF-23827C or BMS 3-24 is specified. AeroShell Grease 33 can also be used in certain applications on Boeing aircraft that require the use of MIL-G-21164. Other applications on Boeing aircraft requiring the use of MIL-G-21164 and other greases are under review, and in due course Boeing will issue details of the full range of applications. For the current status, consult the latest issue of the Boeing Service Letter "BMS 3-33B General Purpose Aircraft Grease".
- AeroShell Grease 33 can be used for routine lubrication in applications where MIL-PRF-23827C is specified on aircraft produced by McDonnell Douglas, Airbus, BAe Regional Aircraft, Canadair, Lockheed, Embraer, Fokker and Gulfstream (except for bearings, applications above 121 0 C and sliding applications requiring molybdenum disulphide).
- Other aircraft manufacturers are evaluating AeroShell Grease 33 with a view to using the approvals for their aircraft. Operators should check regularly with these manufacturers for the latest status.
- The use of AeroShell Grease 33 can provide operators with the following benefits:
- Reduced inventories; reduced maintenance and labour costs; fewer opportunities for misapplication of the product.
Performance & benefits
- AeroShell Grease 33 contains a synthetic oil and should not be used with incompatible seal materials
Standards & approvals
MIL-PRF-23827C
MIL-PRF-23827C — aviation grease
The US military specification for a general-purpose aircraft grease; Type II covers a specific base-oil/thickener variant.