Synthetic Aviation Grease
Mobil Aviation Grease SHC 100 is a supreme performance synthetic grease which combines the unique features of a polyalphaolefin (PAO) synthetic base fluid with those of a high quality lithium complex soap thickener. The thickener system provides a high dropping point, excellent resistance to water wash, and a tenacious structural stability. The unique physical properties of the synthetic base oil, combined with selected additives, provide outstanding protection against wear, rust, corrosion, and high temperature degradation. The wax-free feature of the synthetic base oil allows for low-temperature mobility/pumpability and low starting and running torque values. Mobil Aviation Grease SHC 100 is the product of choice for aircraft wheel bearing applications.
Features and Benefits
A key factor in the development of Mobil Aviation Grease SHC 100 was the close contact between ExxonMobil product engineers and key OEMs to ensure that the lubricant would provide exceptional performance in aircraft wheel bearings. This work has helped to confirm the results from ExxonMobil laboratory tests showing the exceptional performance of Mobil Aviation Grease SHC 100 including long grease life, enhanced bearing protection and bearing life in aircraft wheels, and wide temperature range of application.
To combat high thermal exposure of the oil, ExxonMobil product formulators chose synthetic hydrocarbon base oils for Mobil Aviation Grease SHC 100 because of their exceptional thermal/oxidative resistance potential. A state-of-the-art lithium complex thickener technology was developed and used specific additives to enhance performance.
Mobil Aviation Grease SHC 100 offers the following features and benefits:
|Features||Advantages and Potential Benefits|
|High viscosity index (VI) base stock with no wax content||Wide application temperature ranges, with excellent protection at high temperatures and low torque, easy start-up at low temperatures.|
|Outstanding high temperature and low temperature performance||Thicker fluid films protecting against wear of equipment parts operating at high temperature|
|Excellent protection against wear, rust, and corrosion||Reduced downtime and maintenance costs because of reduced replacement of equipment parts|
|Excellent structural stability and oxidation resistance||Long intervals between re-lubrication and improved bearing life|
|Outstanding structural stability in the presence of water||Excellent grease retention on parts in hostile wet environments|
|Low volatility||Little loss of lubricating oil|
Mobil Aviation Grease SHC 100 is recommended for aviation applications which need a lubricant that can perform normal functions, yet go far beyond in terms of high and low temperatures and long-life performance. It is a NLGI Grade 2/ISO VG 100 grease having the cold-temperature pumping resistance of most mineral-oil NLGI Grade 0 greases. It provides outstanding protection at operating temperatures from –54 ºC (-65 ºF) to 177 ºC (350 ºF).
Mobil Aviation grease SHC 100 is recommended for high speed, heavy load applications such as wheel bearings, as well as for slower speed, high load applications such as landing gear bearings, slides, and joints.
Mobil Aviation Grease SHC 100 is approved as a wheel bearing grease by all major aircraft wheel manufacturers.
Specifications and Approvals
|Mobil Aviation Grease SHC 100||Approved as a wheel bearing grease|
|Honeywell (formerly AlliedSignal)||X|
|Test Method||Mobil Aviation Grease SHC 100 (1)||Spec Limit|
|Soap Type||Lithium Complex|
|Structure||Visual||Smooth; Slight Tack|
|Base Oil Viscosity, cSt||ASTM D 445|
|at 40 ºC||100|
|at 100 ºC||14.5|
|Penetration at 25ºC (77ºF), 60 Stroke Worked, mm/10||ASTM D 217||280||255 – 300|
|Extended Worked Stability, 100,000 strokes||FTM 313||313||350 max|
|Dropping Point, ºC (ºF)||ASTM D 2265||278 (532)||246 (475) min|
|Copper Strip Corrosion, 24 Hrs at 100ºC||ASTM D 4048||Pass||1b max|
|Four-Ball Wear, Scar dia, mm||ASTM D 2266||0.5||0.8 max|
|Four-Ball EP, Weld Load, kgf||ASTM D 2596||250|
|Four-ball EP, Load Wear Index, kgf||ASTM D 2596||40|
|Water Washout, wt %||ASTM D 1264|
|1 Hr at 79ºC (175ºF)||7|
|1 Hr at 41ºC (105ºF)||3||20 max|
|Rust Protection, 48 Hrs at 125ºF, ›1mm dia Corrosion Spots||ASTM D 1743||Pass||0 in 2 out of 3 bearings|
|Bomb Oxidation, pressure drop in psi||ASTM D 942|
|100 hr at 99ºC (210ºF)||3|
|500 hr at 99ºC (210ºF)||5|
|Oil Separation, 30 Hrs at 177ºC, wt %||ASTM D 6184||7||12 max|
|Evaporation, 30 Hrs at 177ºC, wt %||ASTM D 972||5|
|Dirt Count, Particles/mL||FTM 3005|
|25-125 Micron||Pass||1000 Max|
|Larger than 125 Micron||Pass||0|
|Low Temp. Torque @ -54ºC (-65ºF), Nm (g-cm)||ASTM D 1478|
|Starting||0.3 (3100)||2.0 (20400)|
|Running||0.1 (1020)||0.5 (5100)|
|(1) Values may vary within modest ranges|
Health and Safety
Based on available toxicological information, this product is not expected to produce adverse effects on health when used and handled properly. Information on use and handling, as well as health and safety information, can be found in the Material Safety Data Sheet (MSDS) which can be obtained from your local distributor or via the Internet on http://www.exxonmobil.com/lubes
It cannot be guaranteed that the product information given above is up to date. For the latest version of the Product Data Sheet we refer to the product library of ExxonMobil.