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

Applications

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
ABSC (Meggitt)                              X
Dunlop (Meggitt)                              X
Goodrich                              X
Honeywell (formerly AlliedSignal)                              X
Messier-Bugatti                              X
Parker-Cleveland                              X

Typical Properties

  Test Method Mobil Aviation Grease SHC 100 (1) Spec Limit
NLGI Grade   2  
Soap Type   Lithium Complex  
Structure Visual Smooth; Slight Tack  
Color Visual Red  
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

Remark

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.