AeroShell Grease 22
AeroShell Grease 22 is a versatile advanced general purpose grease composed of a synthetic hydrocarbon oil thickened with Microgel®, with outstanding performance characteristics. Appropriate additives are included to achieve the necessary oxidation and corrosion resistance, anti-wear properties and load carrying properties.
The useful operating temperature range is –65°C to +204°C.
APPLICATIONS
AeroShell Grease 22 is especially recommended for use wherever severe operating conditions are encountered as in high bearing loads, high speeds, wide operating temperature range, and particularly where long grease retention and high resistance to water washout are required.
The wide range of applications include aircraft wheel bearings, engine accessories, control systems, actuators, screw-jacks, servo mechanisms and electric motors, helicopter rotor bearings, instruments, airframe lubrication, hinge pins, static joints, landing gears.
AeroShell Grease 22 contains a synthetic hydrocarbon oil and should not be used in contact with incompatible seal materials. Refer to the General Notes at the front of this section for further information.
SPECIFICATIONS
U.S. | Approved MIL-PRF-81322F NLGI Grade 2 Approved DOD-G-24508A |
British | Approved DEF STAN 91-52 |
French | Approved DCSEA 395/A |
Russian | Analogue of CIATIM 201 and 203, VNII NP 207, ERA (VNII NP 286M) and ST (NK-50) |
NATO Code | G-395 |
Joint Service Designation | XG-293 |
PROPERTIES | MIL-PRF-81322F NLGI Grade 2 |
TYPICAL |
Oil type | -- | Synthetic Hydrocarbon |
Thickener type | -- | Microgel |
Base oil viscosity mm²/s -40°C at 40°C at 100°C |
-- -- -- |
7500 30.5 5.7 |
Useful operating temperature range °C | -- | –65 to +204 |
Drop point °C | 232 min | 260+ |
Worked penetration at 25°C | 269 to 295 | 275 |
Unworked penetration at 25°C | -- | 271 |
Bomb oxidation pressure drop at 99°C 100 hrs MPa (psi) 500 hrs MPa (psi) |
0.083 (12) max 0.027 (4) |
0.172 (25) max 0.069 (10) |
Oil separation at 177°C, in 30 hrs % m |
2.0 to 8.0 |
4.7 |
Water resistance test loss at 41°C % m |
20 max |
0.5 |
Evaporation loss in 22 hrs at 177°C % m |
10 max |
4.3 |
Antifriction Bearing Performance at 177°C (hrs) |
400 min |
400+ |
Load carrying capacity/ Mean Hertz Load (kg) |
30 min |
45 |
Copper corrosion 24 hrs at 100°C | Must pass | Passes |
Bearing protection 2 days at 52°C | Must pass |
Passes |
Colour | -- | Amber |