Ball bearing in blue grease

Mobilgrease XHP™ 681 Mine

Grease

  • Safety Data Sheets (SDS)
  • Product Data Sheets (PDS)

Our Mobilgrease XHP™ 681 Mine grease is designed for the lubrication of extra-heavy-duty off-highway and mining equipment. It is specially formulated with lithium-complex technology to provide:

  • Exceptional staying power
  • Water washout and spray-off resistance
  • Extended service capabilities
  • Compatibility with conventional sealing materials

This grease adheres to surfaces, preventing rainwater and dredging operations from washing it away, and helps to ensure proper lubrication and equipment protection even in some of the most severe water-exposure mining industry conditions. 

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Data sheets

Product Data Sheets (PDS)
Safety Data Sheets (SDS)

Technical resources

Industrial grease lubricant application guide

Looking for a guide on which Mobil™ industrial grease best suits your needs? We have you covered.

Technical topics, PDF

Mobilgrease XHP™ 681 Mine helps Colombian mining company extend equipment life*

With Mobilgrease XHP™ 681 Mine grease and an effective preventive maintenance program, one mining company generated an annual savings of US $118,670. Find out more.

Success stories, PDF

All resources

Features and Benefits

Mobilgrease XHP 681 is a leading member of the Mobilgrease brand of products, which has gained a reputation world-wide for innovation and performance excellence. Mobilgrease XHP greases are state-of-the-art products designed by our formulation technologists and backed by our world-wide technical support staff.

A key factor in the excellent adhesion and cohesion properties and high drop point of Mobilgrease XHP 681 is the proprietary manufacturing technology developed at our research facilities and adopted by our modern manufacturing facilities. These products use specially selected additives to provide excellent oxidation stability, rust and corrosion control, resistance to water contamination as well as anti-wear and EP protection. Mobilgrease XHP 681 offers the following features and potential benefits:

FeaturesAdvantages and Potential Benefits
Superb resistance to water washout and spray-offHelps assure proper lubrication and protection even in the most severe water exposure conditions
Highly adhesive and cohesive structureExcellent grease tenacity helps reduce leakage and extend re-lubrication intervals for reduced maintenance requirements.
Excellent rust and corrosion resistanceHelps protect lubricated parts even in hostile aqueous environments, especially acidic water
Very good resistance to thermal, oxidative and structural degradation at high temperatureExtended grease life and enhanced bearing protection in high temperature applications helps reduce maintenance and replacement costs.
Very good anti-wear and EP performanceProvides reliable protection of lubricated equipment, even under conditions of high sliding and shock loading with potential for extended equipment life and reduced unanticipated downtime

 

Applications

Mobilgrease XHP 681 Mine is designed primarily for use in the mining industry where it is recommended by ExxonMobil for the lubrication of slow moving plain and rolling element bearings. It will provide extraordinary performance in contractor, construction, earthmoving, mobile and stationary equipment particularly where long lubrication intervals or oscillating/vibrating motion is present. 

 

Typical Properties

Mobilgrease XHP681 Mine
NLGI Grade1
Thickener TypeLi-Complex
Color, VisualGray
Molybdenum DiSulfide, wt %, calculated5%
Dropping Point, ºC, ASTM D 2265280
Viscosity of Oil, ASTM 445 cSt @ 40º C680
Penetration, Worked, 25º C, ASTM D 217325
Penetration Consistency Change, Roll Stability, ASTM D 1831, mm/10+10
Penetration 100,000 Stroke, Change From 60 Stroke, ASTM D 217, mm/10+10
Low Temperature Mobility @ 20 F, M 1390, grams/min11
4-Ball Wear Test, ASTM D 2266, scar, mm0.5
4-Ball Weld Load, ASTM D 2596, Kg620
4-Ball EP, ASTM D 2596, Load Wear Index91.5
Bomb Oxidation, ASTM D 942, Pressure drop at 100 hrs, kPa20.7
Corrosion Prevention, ASTM D 1743Pass
Oil Separation, ASTM D 1742, % Wt. Loss2
Water Resistance, DIN 51807, Rating0
Copper Strip Corrosion, ASTM D 4048, Rating1A
Water Spray Resistance, ASTM D 4049, % Spray-off38.7
Water Washout, ASTM D 1264, Wt % loss at 79º C2.5

 

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.

  • Corrosion protection
  • Enhanced wear protection
  • Extended life
  • Extreme pressure
  • High temperature
  • Lithium complex
  • Low temperature
  • Severe operating conditions
  • Water resistance
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