Mobilgear 600 XP Series
Gear Oil
ng>Product Descriptionng>
The Mobilgear 600 XP Series are extra high performance gear oils having outstanding extreme pressure
characteristics and load-carrying properties, intended for use in all types of enclosed gear drives with circulation
or splash lubrication systems. Mobilgear 600 XP Series is designed to stay ahead of the changing needs of
gearbox technology. Gearbox technology design trends are towards smaller units with similar power
throughput. This increase in power density places increased demands on gear oils. Mobilgear 600 XP Series
oils are formulated to meet the stress by providing extra protection for gears, bearings and seals.
Mobilgear 600 XP Series is formulated to protect gear teeth from wear at its earliest stages. Microscopic wear,
called micropitting, can lead to significant gear tooth damage. Mobilgear 600 XP Series exceeds the industry
requirement for bearing wear protection. In fact, Mobilgear 600 XP Series provides up to 15 times the wear
protection as measured by the industry standard FAG FE 8 test. Mobilgear 600 XP Series’ balanced formulation
is able to provide maximum wear and corrosion protection while maintaining compatibility with common gearbox
seal materials. Mobilgear 600 XP helps to maintain gearbox seal integrity thereby preventing oil leaks and
keeping contamination out. By protecting the gears, bearings and seals, Mobilgear 600 XP can improve equipment
reliability and increase productivity.
Mobilgear 600 XP Series oils are recommended for industrial spur, helical and bevel enclosed gears with
circulation or splash lubrication, operating at bulk oil temperatures up to 100ºC. They are particularly suitable
for gear sets working under heavy or shock loads. Mobilgear 600 XP oils also find broad application in marine
gearing applications. They may also be used in non-gear applications include highly loaded and slow speed
plain and rolling contact bearings.
ng>Features and Benefitsng>
Mobilgear 600 XP Series products are a leading member of the Mobil brand of industrial lubricants that enjoy a
reputation for innovation and high performance capability. These mineral-based products are designed to provide
high quality industrial gear oils, meeting the latest industry standards and with high versatility to lubricate a broad
range of industrial and marine equipment.
Mobilgear 600 XP Series products offer the following features and potential benefits:
ng>Features Advantages and Potential Benefits
ng>Less gear and bearing wear resulting in less unexpected
downtime
Enhanced gear wear protection from micropitting
Up to 22% improvement in bearing life reducing bearing
replacement costs and improving productivity
Reduced debris denting from generated wear particles
Improved bearing wear protection Improved bearing life resulting in higher productivity
Reduced leakage, oil consumption and contamination
ingress helping to reduce maintenance, extend gearbox
reliability and higher productivity
Outstanding compatibility with a range of seal materials

ng>Features Advantages and Potential Benefitsng>
Helps extend lubricant life with lower lubricant and
lubrication costs and reduced scheduled downtime.
Excellent resistance to oil oxidation and thermal
degradation
High resistance to sludge and deposit formation Cleaner systems and reduced maintenance
Fewer grades of lubricant required because of wide
range of application, leading to lower purchase and
storage costs and less danger of using wrong lubricant
Wide range of applications
Excellent protection of machine parts, with reduced
maintenance and repair costs
Optimised resistance to rust and corrosion of steel and
corrosion of copper and soft metal alloys
Effective lubrication and problem free operation in the
presence of water contamination or in equipment prone
to oil foaming
Resistance to foaming and emulsion formation
ng>Applications
ng>Mobilgear 600 XP lubricants are used in a wide range of industrial and marine applications, especially spur,
helical, bevel and worm gearing. Specific applications include:
• Industrial gearing for conveyers, agitators, dryers, extruders, fans, mixers, presses, pulpers, pumps
(including oil well pumps), screens, extruders and other heavy duty applications
• Marine gearing including main propulsion, centrifuges, deck machinery such as winches, windlasses,
cranes, turning gears, pumps, elevators and rudder carriers
• Non-gear applications include shaft couplings, screws and heavily loaded plain and rolling contact bearings
operating at slow speeds.

ng>Typical Properties
ng>Mobilgear 600 XP                      68     100     150     220     320     460     680
ISO Viscosity Grade                   68     100     150     220     320     460     680
Viscosity, ASTM D 445
mm²/s @ 40ºC                            68    100     150     220     320     460     680
mm²/s @ 100ºC                         8.8   11.2     14.7    19.0    24.1    30.6    39.2
Viscosity Index, ASTM D 2270     101   97        97       97       97       96       90
Pour Point, ºC, ASTM D 97           -27    -24      -24     -24      -24      -15      -9
Flash Point, ºC, ASTM D 92          230    230     230     240    240      240    285
Density @15.6 ºC, ASTM D           0.88   0.88   0.89   0.89    0.90     0.90    0.91
4052, kg/l
FZG Micropitting, FVA 54, Fail   10 / High 10 / High 10 / High 10 / High 10 / High 10 / High
Stage / Rating
FE 8 wear test, DIN 51819-3,        2        2        2           2       2         2         2
D7,5/80-80. Roller wear, mg
Timken OK Load, ASTM D 2782,     65     65       65        65      65       65      65
lb
4-Ball EP test, ASTM D 2783,
Weld Load, kg                               200   200     250      250     250     250    250
Load Wear Index, kgf                     47     47      47         48      48        48      48
FZG Scuffing, Fail Stage
A/8.3/90                                         12+    12+    12+     12+     12+     12+    12+
A/16.6/90                                        12+    12+   12+     12+     12+     12+
Rust protection, ASTM D 665,          Pass Pass   Pass    Pass    Pass   Pass    Pass
Sea Water
Copper Strip Corrosion, ASTM          1B      1B      1B       1B       1B        1B       1B
D 130, 3 hrs @ 100ºC
Demulsibility, ASTM D 1401,             30       30       30       30      30        30       30
Time to 3ml emulsion, minutes
@ 82ºC
Foam Test, ASTM D 892,                   0/0      0/0     0/0     0/0     0/0        0/0    0/0
Tendency/Stability, ml/ml
Sequence 1
Sequence 2                                       30/0   30/0   30/0   30/0    30/0      30/0   30/0
Health and Safety
Based on available information, this product is not expected to produce adverse effects on health when used
for the intended application, following the recommendations provided in the Material Safety Data Sheet (MSDS).
MSDSs are available upon request through your sales contract office, or via the Internet on
http://www.exxonmobil.com. This product should not be used for purposes other than its intended use. If disposing
of used product, take care to protect the environment.

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