AeroShell Grease 14
Enhance helicopter lubrication with a calcium soap-thickened mineral grease effective from -54掳C to +75掳C, enabling long-lasting protection.
Features and benefits
Specialised helicopter grease
Formulated specifically for helicopter applications, ensuring reliable performance in demanding rotor conditions.
Reliable anti-fretting properties
Provides robust protection against fretting, reducing wear and extending component life.
Effective moisture resistance
Designed to combat moisture-induced corrosion, safeguarding critical rotor and airframe components.
Corrosion and oxidation inhibition
Inhibited against corrosion and oxidation, offering long-term protection and durability in harsh environments.
High stability in extreme conditions
Maintains performance across a wide temperature range, from -54掳C to +75掳C, ideal for varying operational climates.
Approved by leading helicopter manufacturers
Meets the specifications of major helicopter OEMs, making it a trusted choice for main and tail rotor bearings.
Specifications & approvals
| Country / OEM | Specification |
|---|---|
| United States | MIL-G-25537C |
| British | DEF STAN 91-51 |
| NATO Code | G-366 |
| Joint Service Designation | XG-284 |
| Rolls-Royce | OMat433 |
The TDS and MSDS are in English, but you can find these documents for other countries in the .
Applications
AeroShell Grease 14 is the leading helicopter multi-purpose grease and is approved by all helicopter manufacturers.
Owing to its anti-fret properties, AeroShell Grease 14 is particularly suitable for the lubrication of helicopter main and tail rotor bearings, splines, etc.
Health, Safety and Environment
Health and Safety
- This product is unlikely to present any significant health or safety hazard when properly used in the recommended application and good standards of personal hygiene are maintained.
- Avoid contact with skin. Use impervious gloves with used oil. After skin contact, wash immediately with soap and water.
- Guidance on Health and Safety is available on the appropriate Safety Data Sheet, which can be obtained from .
Protect the Environment
- Take used lubricant to an authorised collection point. Do not discharge into drains, soil or water.
Additional information
Advice
- Advice on applications not covered here may be obtained from your Shell representative.
Technical Talk
Greases
Get to grips with the basics of aircraft greases by reading this handy article, discussing how greases are created and their best applications for aviation engines.
Typical Physical Characteristics
| Properties | Method | MIL-G-25537C | Typical |
|---|---|---|---|
| Oil type | - | - | Mineral |
| Thickener type | - | - | Calcium soap |
| Colour | Appearance | - | Tan |
| Base Oil Viscosity @40掳C mm虏/s | ASTM D445 | - | 13.7 |
| Base Oil Viscosity @100掳C mm虏/s | ASTM D445 | - | 3.1 |
| Useful operating temperature range 掳C | - | - | 鈥�54 to +75 |
| Drop point 掳C | ASTM D2265 | 140 min | 148 |
| Worked penetration @25掳C | ASTM D217 | 265 to 305 | 284 |
| Penetration unworked @25掳C | ASTM D217 | 200 min | 277 |
| Oxidation Stability 100h @ 99掳C, kPa | ASTM D942 | 34.5 max | 20 |
| Oxidation Stability 400h @ 99掳C, kPa | ASTM D942 | 137.8 max | 93 |
| Oil separation 30 hrs @100掳C %m | ASTM D6184 | 5.0 max | 4 |
| Water stability Penetration delta worked 100,000 strokes + 10% water 0.1mm | FED-STD-791-313 | 70 max | 44 |
| Evaporation Loss 22h @ 100掳C, %m | ASTM D972 | 9.5 max | 6.6 |
| Low Temperature Torque - @-55掳C Nm Start | ASTM D1478 | 1.47 max | 0.53 |
| Low Temperature Torque - @-55掳C Nm Run | ASTM D1478 | 0.196 max | 0.03 |
| Copper Corrosion 24h @ 100掳C | ASTM D4048 | Must pass | Passes |
| Particle Count part/ml | FED-STD-791 M.3005 | Must pass | Passes |
These characteristics are typical of current production. Whilst future production will conform to Shell's specification, variations in these characteristics may occur.
