Mobilgrease HT

Grease

Mobilgrease HTR, HTM, HTS and HTF are high performance Extreme Pressure greases with exceptional resistance to the water contamination conditions typical of steel mill, surface mining, and off-highway conditions. Additionally, Mobilgrease HTR, HTM, HTS, and HTF are formulated with superior corrosion resistance. Mobilgrease HTM and HTR provide good water and corrosion resistance along with formulations more capable of providing good dispensing characteristics in central systems. The combination of the lithium complex soap with an advanced additive system provide high temperature performance properties. Mobilgrease HTF provides fire retardancy for castor and hot strip mill operations.

 

Mobilgrease HTR, HTM, HTS and HTF greases are primarily recommended for the lubrication of bearings, gears, and cams where the elastohydrodynamic lubrication (EHL) requirements dictate significant viscometric contribution. The greases shed mill water, continue to lubricate and aid in forming a strong seal to resist water intrusion. When free water enters a bearing, the greases maintain consistency. Their EP properties and high oil viscosity help reduce wear, making them especially applicable for heavy shock loads. With less wear, maintenance costs for replacing failed bearings will be lower. They can also be used in central grease dispensing systems consistent with apparent viscosity calculations.

 

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Features and Benefits

Mobilgrease HTR, HTM, HTS and HTF greases are leading members of the Mobilgrease brand of products, which has gained a worldwide reputation for innovation and performance excellence. Mobilgrease HTR, HTM, HTS and HTF grease products are designed by ExxonMobil formulation technologists and backed by our worldwide technical support staff.

Mobilgrease HT products were designed specifically to meet the requirements of customers for heavy-duty products with excellent: resistance to water, high temperature and with cohesive and adhesive properties. These greases offer the following features and potential benefits:

 

Features

Advantages and Potential Benefits

High EHL viscometrics and selected additives for excellent resistance to wear for heavily loaded components

Less unexpected downtime and reduced equipment replacement costs

Excellent ability to seal bearings against water intrusion, and to maintain consistency in the presence of water

Fewer bearing failures caused by water contamination with reduced maintenance and replacement costs

Exceptional corrosion resistance

Very good bearing protection for reduced maintenance and operating costs

Excellent grease cohesion, adhesion and tackiness at high temperatures and in presence of water spray

Better stay-put properties in tough environments and extended re-lubrication potential

Good pumpability at low to moderate temperatures

Can be used in centralised grease distribution systems

 

Applications

Mobilgrease HTR is primarily intended to address low temperature pumpability challenges. Mobilgrease HTM provides good pumpability with additional protection against water intrusion. Where an NLGI Grade 2 grease can be used, Mobilgrease HTS provides maximum bearing lubrication performance. Mobilgrease HTF provides fire retardancy for castor and hot strip mill operations.

 

Mobilgrease HTR, HTM, HTS and HTF greases are designed primarily for the lubrication of bearings, gears, and cams, which require high viscosity base oil. Such heavy-duty applications include:

     •  Steel mill bearings,

     •  Off-highway rolling stock

     •  Surface mining drag lines, excavators, drills and haul trucks

 

Properties and Specifications

Property

MOBILGREASE HTS

MOBILGREASE HTR

MOBILGREASE HTM

Grade

NLGI 2

NLGI 0.5

NLGI 1.5

Thickener Type

Lithium Complex

Lithium Complex

Lithium Complex

Base Oil Viscosity of Greases @ 100 C, mm2/s, AMS 1700

37

24

24

Base Oil Viscosity of Greases @ 40 C, mm2/s, AMS 1697

680

320

320

Color, Visual

Black

Black

Black

Dropping Point, °C, ASTM D2265

295

280

280

Four-Ball Extreme Pressure Test, Weld Load, kgf, ASTM D2596

315

315

315

Four-Ball Wear Test, Scar Diameter, 40 kg, 1200 rpm, 1 h, 75 C, mm, ASTM D2266

0.5

0.5

0.5

Penetration, 60X, 0.1 mm, ASTM D217

280

340

295

Roll Stability, 0.1 mm, ASTM D1831

-1

-1

Roll Stability, for ILGU Blending, 0.1 mm, ASTM D1831

-1

Water Washout, Loss @ 79 C, wt%, ASTM D1264

5.5

5.5

 

Health and Safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @ http://www.msds.exxonmobil.com/psims/psims.aspx

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