Product Description
Mobilith SHC PM greases are supreme performance products designed specifically
for severe paper machine applications, including extreme temperature
environments and exposure to different qualities of water. Mobilith SHC PM
greases combine the unique features of a synthetic base fluid with those of a
high quality lithium complex thickener. The wax-free nature of the synthetic
base fluid provides excellent low temperature pumpability and low starting and
running torque compared to non-synthetic oil products of the same viscosity.
The high viscosity index of the synthetic base fluid ensures excellent film
protection at high temperatures. The lithium complex thickener contributes
excellent adhesion, structural stability and resistance to water. These
properties are complemented by a special additive system to provide rust and
corrosion resistance, wear protection, thermal/oxidative resistance and to
enhance water resistance properties. Mobilith SHC PM 220 and Mobilith SHC PM
460 are both NLGI grade 1.5 with base fluids of ISO VG 220 and 460,
respectively.
Mobilith SHC PM greases are designed for use in the most critical rolling
element bearing applications in paper machines. They provide outstanding
protection against rust and typical acid and alkali water corrosion, making
them ideal for the wet end of the paper machine. The low volatility and
excellent oxidation stability of the PAO base stock ensures excellent service
at high temperatures typical of dry end conditions.
The Mobilith SHC PM series has become the technology of choice for many paper
mill operators, worldwide. Their reputation is based on exceptional quality,
reliability and the proven performance benefits they deliver.
Features and Benefits
The Mobil SHC brand of oils and greases are recognized and appreciated around
the world for their innovation and outstanding performance. The Mobilith SHC
series symbolizes ExxonMobil's continued commitment to using advanced
technology to provide outstanding products. A key factor in the development of
Mobilith SHC PM greases was the close contacts between our scientists and
application specialists with key paper machine designers to ensure that our
product offerings would provide exceptional performance in this continually
evolving, and increasingly severe, equipment area.
Our work with equipment builders has helped confirm the results from our own
laboratory tests showing the exceptional performance of the Mobilith SHC PM
greases. These benefits include excellent resistance to acidic and alkaline
water, enhanced bearing protection and bearing life, wide temperature range of
application, and longer grease life.
To combat high thermal exposure our product formulation scientists chose
proprietary synthetic base oils for Mobilith SHC PM grease because of their
exceptional thermal and oxidative resistance. Our scientists developed a
state-of-the-art lithium complex thickener technology and used specific
additives to enhance Mobilith SHC PM greases to meet the needs of modern and
future paper machines. Mobilith SHC PM greases offer the following features
and benefits:
Features
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Advantages and Potential Benefits
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Outstanding high temperature and low temperature performance
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Wide application temperature range, from -40ºC to 180ºC with excellent
protection at high temperatures and low torque, easy start-up at low
temperatures
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Excellent protection against wear, rust and corrosion, including acidic water
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Reduced downtime and maintenance costs because of reduced wear, rust and
corrosion even in acidic and alkaline water environments
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Excellent structural stability and oxidation resistance
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Extended service life with longer intervals between relubrication and improved
bearing life
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Excellent wear protection under heavy loads, slow speeds, and high temperatures
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Outstanding protection of slow speed, heavily loaded bearings, with extended
bearing life
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Outstanding structural stability in the presence of water
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Retains excellent grease performance in hostile aqueous environments
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Low volatility
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Helps resist viscosity increase at high temperatures to maximize relubrication
intervals and bearing life
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Applications
Application Considerations: While Mobilith SHC PM greases are compatible with
most mineral oil based products, admixture may detract from their performance.
Consequently it is recommended that before changing a system to one of the
Mobilith SHC PM greases, it should be thoroughly cleaned out to achieve the
maximum performance benefits. If dismantling the system for cleaning before
changeover isn't feasible, then thorough purging and increased relubrication
intervals are strongly recommended. Contact your local ExxonMobil Lube
Engineer for consultation on this approach.
Mobilith SHC PM greases are recommended for critical rolling element bearing
applications in paper machines. Included among these are:
- Wet end paper machine bearings.
- Highly loaded press section bearings.
- High-temperature felt roll and calendar stack bearings.
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Typical Properties

Mobilith SHC
| 
PM 220
| 
PM 460
|
| NLGI Grade | 1.5 | 1.5 |
| Thickener Type | Lithium Complex | Lithium Complex |
| Color, Visual | Off-White | Off-White |
| Penetration, Worked, 25 C, ASTM D 217 | 305 | 305 |
| Dropping Point. C, ASTM D 2265 | 275 | 275 |
| Viscosity of Oil, ASTM D 445, cSt @ 40 C | 220 | 460 |
| 4-Ball Wear, ASTMD 2266, Scar, mm | 0.5 | 0.5 |
| 4-Ball Weld Load, ASTM D 2596, kg | 250 | 250 |
| Timken OK Load, ASTM D 2509, lbs | 65 | 65 |
| Roll Stability, ASTM D 1831, % Change | -5 to +5 | -5 to +5 |
| Water Washout, ASTM D 1264, 79 C, % Loss | 2 | 3 |
| Rust Test, ASTM D 1743, Rating | PASS | PASS |
| Copper Corrosion, ASTM D 4048, Rating | 1A | 1A |
| EMCOR Rust Test, ASTM D 6138, Distilled Water, Rating | 0/0 | 0/0 |
| EMCOR Rust Test, ASTMD 6138, Acid Water pH 4.5, Rating | 0/0 | 0/0 |
| EMCOR Rust Test, ASTM D 6138, Alkaline Water pH 12.0, Rating | 0/0 | 0/0 |
| Oil Separation, ASTM D 1742, 0.25 psi, 24 hours @ 25 C, % Wt. Loss | 3 | 3 |
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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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