Product Description
The Mobiltac Double Letter Series products are high performance, non-diluent
type, heavy-bodied products intended for the lubrication of open gears over a
wide range of environmental conditions and machine requirements. They
incorporate extreme pressure additives for the protection of gear teeth and
metal surfaces subject to extremely heavy loads. They form a cohesive and
adhesive lubricating film that resists wear, water wash and excessive "throw
off". They lubricate properly under boundary conditions. They resist peeling
or flaking at sub-zero temperatures.
Mobiltac Double Letter
Series lubricants are recommended for all-purpose applications in open gears.
The two lighter grades meet many builder requirements for heavily loaded
splash-type enclosed gearing.
Features and Benefits
The Mobiltac Double letter Series of products are important members of the
Mobiltac brand of products that have been used with great success over several
decades a wide variety of applications. They offer the following features and
potential benefits:
- Reduced maintenance costs because of longer gear life resulting from reduced wear and excellent protection against corrosion
- Reduced lubricant consumption due to excellent adhesive qualities and resistance to "throw off" and water wash-out
- Good low temperature properties with resistance to peeling
Applications
Mobiltac Double Letter Series lubricants are recommended for all-purpose
applications in open gears. The two lighter grades are used in heavily loaded
splash-type enclosed gearing. Applications include:
- Machinery components as hoist gears, swing gears, large press gears
- Equipment in forge shops, pit or strip mining
- Large earthmoving equipment and cement kilns
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Typical Properties

Mobiltac Double Letter Series
| 
Mobiltac LL
| 
Mobiltac MM
| 
Mobiltac QQ
|
| Viscosity, ASTM D 445 | | | |
| cSt @ 40º C | 1209 | 3900 | 9526 |
| cSt @ 100º C | - | - | 217 |
| Flash Point, ºC, ASTM D 92 | 182 | 182 | 190 |
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Health and Safety
Based on available information, this product is not expected to produce
adverse effects on health when used for the intended application and the
recommendations provided in the Material Safety Data Sheet (MSDS) are
followed. MSDS's are available upon request through your sales contract
office, or via the Internet. This product should not be used for purposes
other than its intended use. If disposing of used product, take care to
protect the environment.
The Mobil logotype, the Pegasus design are trademarks of Exxon Mobil Corporation, or one of its subsidiaries.
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