Product Information

Pyroshield® Syn Hvy & XHvyOpen Gear Lubricants (9000 & 9011)

Heavy-Metal-Free Synthetic Oil Provides Extreme Protection

Pyroshield Syn Hvy & XHvy Open Gear Lubricants are heavy-duty synthetic fluids designed to provide outstanding protection for high-load, heavy-shock applications, such as large shrouded open gears used in the mining, mineral processing and cement industries. Pyroshield Syn Open Gear Lubricants are non-asphaltic and environmentally friendly, containing no heavy metals. Each lubricant features a synergistic mix of Almasol®, LE’s exclusive wear-reducing additive, and a unique combination of extreme pressure additives.

The Lubrication Reliability Source™

Beneficial QualitiesIncreases uptimeLengthens gear lifeLowers lubricant consumptionReduces maintenance

Superior Gear Protection

Exhibits exceptionally high film strength, helpful for withstanding high-load, heavy-shock applicationsCarries Timken OK load of 95-lbAchieves 14th stage pass in FZG gear testCreates a film on metal surfaces, preventing destructive metal-to-metal contactReduces gear temperatures by 5-15%Clings tenaciously to metal surfaces, without accumulating

Environmentally FriendlyContains no lead or heavy metalsCan be disposed of like any other nonhazardous petroleum oil

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Easy To UseAppears translucent in use, facilitating visual inspection of open gearsDoes not require equipment to be shut down during conversion from old lubricant to newCan be applied manually or through automatic spray systemsEliminates cleanup-related downtime

Cost EffectivePerforms better and lasts longer than competitive lubricantsEnsures trouble-free operation, fewer failures and less downtimeReduces maintenance costs for repairs, parts and laborReduces lubricant consumption by up to 80%Reduces energy consumption

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Proprietary Additive

LE’s proprietary additives are used exclusively in LE lubricants. Pyroshield Syn Hvy & XHvy Open Gear Lubricants contain Almasol.

Almasol® solid wear-reducing additive is able to withstand extremely heavy loads, chemical attack and temperatures up to 1,900°F (1,038°C). It is attracted to metal surfaces, forming a microscopic layer but not building on itself or affecting clearances. Almasol minimizes metal-to-metal contact and the resulting friction, heat and wear.

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LE Offers Pyroshield’s Advanced Technologyas Solution for Large Shrouded Open Gears

Lubrication Engineers developed Pyroshield Syn Hvy and XHvy Open Gear Lubricants to meet the specific requirements for the lubrication of large shrouded open gears, and to address the main problems associated with traditional lubricants for these gears.

These traditional open gear lubricant problems, along with the accompanying Pyroshield solution, include:

Wear / DowntimeSome lubricants commonly used for open gear systems are identified only as “cushioning compounds,” thus providing poor lubrication, which could result in excessive wear, frequent downtime for repairs, malfunctioning and high operating temperatures.

Pyroshield SolutionPyroshield Open Gear Lubricants contain a synergistic mix of Almasol®, LE’s exclusive wear-reducing additive, and a unique combination of extreme pressure additives. They exhibit exceptionally high film strength that helps them to withstand heavy loads and cushion shock loading in applications where commercial grade lubricants would fail. They also prevent the metal-to-metal contact that can lead to high operating temperatures and destructive wear.

Run-off / Housekeeping / Consumption / CostBecause many lubricants for open gear systems are not sufficiently tacky, they have to be applied in excessive amounts to provide a thick coating. It is not uncommon for the amount of lubricant applied to far exceed the amount recommended by the American Gear Manufacturers Association. In fact, some operators routinely use two to three times more than the recommended amount. Much of these lubricants will

then run off, requiring extensive cleanup and waste disposal. Because of product run-off and the need for a thick layer, many traditional lubricants have to be purchased, used and disposed of in excessive amounts.

Pyroshield SolutionPyroshield Syn Open Gear Lubricants are extremely tacky. LE’s proprietary formulation allows the Pyroshield to cling tenaciously to metal surfaces, without build-up. The use of Pyroshield Syn Open Gear Lubricants has been shown to reduce lubricant consumption by up to 80 percent.

Build-up / DamageSome traditional lubricants are tacky enough to adhere to the metal and not run off, but they cause another problem – they build up in the roots of the gear teeth, which can result in bearing stress and damage, as well as possible damage to foundations. In addition to possible damage, the removal of build-up can be messy and time-consuming.

Pyroshield SolutionUnlike these traditional lubricants that experience accumulation requiring periodic removal, LE’s Pyroshield Syn Hvy and XHvy Open Gear Lubricants are fluid and will not accumulate. Cleanup is not required, and the use of Pyroshield Lubricants eliminates the possibility of expensive gear damage from unchecked accumulations.

Pyroshield Syn Open Gear Lubricants provide the same outstanding wear protection and reduced consumption provided by LE’s Pyroshield 5182, 5180 and 5100 Open Gear Grease, but they have the added ability to flow freely in use. This eliminates the tendency to accumulate on shroud and pinion areas.

Open gears lubricated with a commercial grade open gear lubricant. The gears are difficult to inspect underneath an accumulation of thick, dark lubricant.

The same gears after conversion to Pyroshield Syn Open Gear Lubricant. The gears appear shiny and clean, with a thin layer of clear lubricant allowing easy inspection.

Spray pattern using commercial grade lubricant. Traditional asphaltic lubricants cause spray nozzles to clog, leading to poor application of the lubricant and the creation of damaging hot spots on gears.

Spray pattern after converting to Pyroshield Syn Open Gear Lubricant. The spray nozzles do not clog with the Pyroshield fluid lubricant, allowing a more protective, uniform film of lubricant to be applied to the gears.

Pyroshield® Syn Hvy & XHvyOpen Gear Lubricants

9011 XHvy 9000 Hvy

Color Purple Purple

Gravity °API, ASTM D1298 25.8 23.3

Viscosity @ 100°C (212°F), cSt, ASTM D445 1,104 w/o diluent 880.0

Viscosity @ 40°C (104°F), cSt, ASTM D445 36,070 w/o diluent 28,980

Viscosity @ 40°C (104°F), cSt, min., ASTM D445 6,000 w/ diluent –

Viscosity @ 99°C (210°F), SUS, calculated 5,149 w/o diluent 4,104

Viscosity Index min., ASTM D2270 190 w/o diluent 190

Diluent Yes No

Flash Point °C (°F), (COC), ASTM D92 112 (235) w/ diluent196 (385) w/o diluent

196 (385)

Pour Point °C (°F), ASTM D97 0 (32) 12 (54)

Rust Test 4 hrs @ 60°C (140°F), DI H20, ASTM D665A Pass Pass

Rust Test 4 hrs @ 60°C (140°F), Sea H20, ASTM D665B Pass Pass

Copper Corrosion 3 hrs @ 100°C (212°F), ASTM D130 1b 1b

Timken OK Load lbs, ASTM D2782 95 95

Four-Ball EP Weld Point kgf, ASTM D2783 400 400

Four-Ball EP Load Wear Index kgf, ASTM D2783 95 95

SRV-EP @ 50°C (122°F), 1 mm stroke, 50 Hz frequency, ball on disc, max load w/o seizure, N, ASTM D5706

1,200 1,200

FZG Fail Stage 14+ 14+

300 Bailey Avenue Fort Worth, TX 76107 Fax: 800-228-1142 LE products manufactured under an ISO 9001:2000 Certified Quality System

LI30053 4-10

Technical Data

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Performance Requirements Met or ExceededAGMA 9005-EO2Falk CorporationFFE MineralsFoster WheelerFuller TraylorMetsoWalchandnagar Industries Ltd, India

Typical ApplicationsIndustries where large open gears are in service, including:

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Pyroshield® and Almasol® are registered trademarks of Lubrication Engineers, Inc.

Coal-fired power generationMining (iron, copper and other minerals)Sugar beet processing

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Cement CeramicsPaintGlass and sand

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Techni-Tips 108A Publication of the Lubrication Engineers Technical Department

LE’s Pyroshield® Products Provide Extreme Protection for Open Gears

IntroductionMany electric generating, mineral mining and manufacturing facilities require materials to be ground or pulverized prior to fueling generator sets or prior to being used in final product processing. Much of this material is ground in ball, pebble, rod or breaker mills. Many of these mills have large open gearsets (bull or ring-and-pinion) as drive mechanisms. Large kilns, some as long as a football field, are also rotated by using open gearsets.

Lubricating these large open gears presents a unique challenge due to the heavy loads and harsh environmental conditions. Grinding or pulverizing mills are exposed to cement dust, silica or mineral dusts like limestone and coal dust. These conditions magnify the need for superior lubricating products. Empty grinding mills can weigh in excess of 400,000 pounds. Add product and a charge of grinding medium, and the gear system can be moving more than half a million pounds or more. Open gear systems on kilns face the additional difficulty of high operating temperatures.

HistoryTraditionally, operators of open gear systems have relied upon asphaltic compounds to provide a cushioning effect. However, asphaltic lubricants create a major problem with housekeeping due to the large amount of product that must be used to provide a continuous coating to the gears. In addition, wherever asphaltic lubricants have been in use for an extended period, the eventual result is a buildup of hardened lubricant in the roots of the gears. This is difficult to eliminate and causes mechanical interference that can result in gear misalignment or stress on the pedestal mountings.

Many large open gear systems are lubricated using automatic spray systems manufactured by Farval, Trabon, Lincoln and others. These systems function by providing the lubricants to the gear teeth at set intervals in metered amounts. The solids in many of these asphaltic compounds have caused abrasion or erosion of the closely machined parts in the

metering blocks. They also tend to plug the spray nozzles. The result is uneven or inadequate lubrication of the gearset. The remedy is periodic maintenance and cleanup. Whether scheduled or unscheduled, this can result in lost production – a very costly problem.

In the past, operators had no choice but to use asphaltic compounds. However, Lubrication Engineers, Inc. has designed and developed a product line that addresses the demanding needs of open gear lubrication. LE’s Pyroshield

The Lubrication Reliability Source™ www.LElubricants.com800-537-7683

Above: A ball mill pinion gear is coated with a thick accumulation of asphaltic open gear lubricant. Below: After conversion to LE’s Pyroshield synthetic lubricant, the pinion is clean.

300 Bailey Avenue Fort Worth, TX 76107 Fax: 800-228-1142 LE operates under an ISO 9001 Certified Quality System.

LI2010809-12

www.LElubricants.com800-537-7683

Techni-Tips

lubricants provide superior lubrication for this application and solve the many lubrication problems that confront operators of large open gear driven equipment.

Product Line Pyroshield® Syn Open Gear Grease (5182, 5180 & 5100) Pyroshield® Syn Hvy & XHvy Open Gear Lubricants

(9000 & 9011)

Pyroshield Benefits Improved Cleanliness

The housekeeping costs associated with the use of asphaltic-based products are difficult to estimate. Operators have reported labor requirements in excess of four man-days to clean some units. Due to the volume of product used, buildup around the shrouds and the local area can be sticky, messy and dangerously slippery. With Pyroshield lubricants, less volume is required to provide far superior gear protection while maintaining system cleanliness.

Elimination of Hazardous Waste Disposal CostsLE’s Pyroshield products can be treated as ordinary used lubricants and can often be added to the fuel or coal burned in the normal operation of many plants. The asphaltic compounds can contain polycyclic aromatic hydrocarbons (PAH) that require disposal as a hazardous waste. Costs for disposal of hazardous waste range from $0.50 per pound to more than $2 per pound in some areas, not to mention the cost and bother of recordkeeping for these products. In these times of environmental protection, the choice of using a safe, nonhazardous lubricant like LE’s Pyroshield is surely the wise choice.

Improved Gear ProtectionAsphaltic-based compounds typically have Timken load ratings of 20 to 25 Ibs and rely on excessive volume for adequate protection. The Timken ratings for LE’s Pyroshield lubricants exceed 70 Ibs for Pyroshield 9000 series oil and exceed 90 Ibs for Pyroshield 5100 series grease. This added protection reduces gear wear and extends the life of the gear system. Pinion gears can cost

from $10,000 to $35,000 to replace. Extending the life of your gear train adds profit to the bottom line.

Lower Lubrication CostsAlthough Pyroshield lubricants may cost more per pound to purchase, reduced consumption often results in an overall reduction in lubrication cost. Many asphaltic compounds leave a 5- to 8-inch layer of product in the bottom of the drum that cannot be used. Hardening of LE’s Pyroshield products does not occur, meaning none of the lubricant goes to waste.

Unique Conversion ProcessConverting to Pyroshield lubricants is accomplished by using a proven, effective and safe procedure that provides no interruption in production or operation. Protection of your gear system is provided throughout the process. Engineering support is provided by the local LE consultant, who in turn is supported by LE’s Technical Services Department.

Reduced Electrical ConsumptionBecause of the superior lubricating qualities of the Pyroshield open gear lubricants, many operators have experienced up to a 2 to 2.5 percent reduction in electrical costs. Reduced friction resulting from superior lubrication can be reflected in reduced energy consumption. LE has documented substantial temperature drops, some exceeding 30°F., during the conversion process and continuing during normal operation. The source of heat is friction in an open gearset. Lower friction means less energy required to overcome that friction, thereby reducing electrical consumption.

Consider the advantages of converting to LE’s Pyroshield open gear lubricants. The choice should be clear. Your local LE lubrication consultant can provide the assistance to set up your conversion and determine which Pyroshield lubricant best fits your particular open gear setup.

Pyroshield lubricants 5180, 5100 & 9011 contain a nonchlorinated solvent as a diluent.

A Publication of the Lubrication Engineers Technical Department LEADERS IN LUBRICANTS NUMBER 102

LUBRICATING GRINDING/PULVERIZING MILLS WITH LE LUBRICANTS INTRODUCTION

In many mining, electric utility and industrial plants, metallic and non-metallic minerals are pulverized or ground so they can be used as solid fuels or ingredients in products. For example, coal as a solid fuel requires a certain amount of processing before its latent energy can be fully exploited. For this to happen, the coal is pulverized in a mill. This coal is then fed into the boiler and used as fuel to heat water and generate steam to drive the turbine. Likewise, limestone must be ground to a fine size so it may be used to manufacture various types of cement or in scrubbers at power plants.

One of the methods employed to "grind" these materials is the use of various types of mills. Most of these are driven by large pinion and bull open gears. This heavy duty, expensive equipment operates under varying loads and temperatures. Frequently, these mills are critical to a plant's operation and cannot afford to be down except for scheduled maintenance. Therefore, lubrication of these gears with the most advanced lubricant available, such as LE's 9000/9001 PYROSHIELD®, 9010/9011 PYROSHIELD® XH and 5180 PYROSHIELD®, plays an important role in assuring continuous operation of these mills and also protects the expensive gears.

TYPES OF MILLS

Although a variety of manufacturers supply mills, the design and principle of operation are very similar. While the units are similar, different manufacturers tend to concentrate or specialize in certain industries or minerals. The major ones are listed below:

Mill Manufacturer Industry/Mineral Foster Wheeler Coal-Fired Power Plants Riley Stoker (KVS) (Now Metso) Coal-Fired Power Plants F.L. Smidth Cement Allis Chalmers (Now Metso) Cement, Glass Sand, Metallic & Non-Metallic Minerals Denver Metallic and Non-Metallic Minerals MPSI (Koppers) (Now Metso) Metallic Minerals Fuller-Taylor Cement, Non-Metallic Minerals

These mills are called by different names, depending on either the industry or the type of medium used to crush/pulverize the mineral. They are known as Ball, Rod, Tube, Pebble or Grinding Mills. The principle of operation is the same in all cases.

A large horizontal cylinder rotates, which is filled with the material to be ground or pulverized and a crushing medium. In the case of a ball mill (Figure A), as the cylinder rotates, steel balls tumble and crush the mineral. Rod mills have the same principle of operation; however, steel rods rather than balls are used as a crushing medium (Figure B). Other crushing mediums can be used, such as rocks in pebble mills.

These types of mills can be found in practically every industry where there is a requirement to crush or grind a mineral. Particular industry types are:

Industry Mineral Coal-Fired Power Plants Coal, Limestone Cement Industry Limestone Refractories Fireclay Glass Sand Producers Quartz Sugar Sugar Beets Ore Processing Copper, Uranium, Iron, Gold, Molybdenum, Zinc Battery Manufacturers Lead Non-Metallic Minerals Phosphate, Perlite, Mica, Talc, etc Paint (Small Mills) Pigments

In most units, rotation of the large cylinder is affected by a large open gear train (Figure C) which consists of spur, single helical or herringbone gears. The size of the bull gear will usually range from six to forty feet in diameter. The pinion gear normally varies from 1-1/2 to 2-1/2 feet in diameter. And, although various drive configurations exist, the pinion is usually driven by an electric motor through a gear reducer. Generally pinion speeds range from 15 to 250 rpm and bull gear speeds are approximately 20 rpm, to a maximum of 30 rpm.

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Throughout the conversions which have been conducted, pinion operating temperatures have been recorded. On the larger mills with external heat sources, such as in coal pulverizers where hot (up to 700°F [371 °C]) primary air circulates through the mill, pinion temperatures with asphaltic lubricants in service reach 210°F to 220°F (99°C-104°C). Pinion temperatures with LE's 9000/9001 PYROSHIELD® 9010/9011 PYROSHIELD® XH or LE's 5180 PYROSHIELD® in service typically run 15°F to 25°F cooler. Depending on load, mills without external sources of heat generally have pinion temperature of 105°F to 180°F (41 °C-82°C) with asphaltics in service. Pinion temperatures will typically decrease with LE's 9000/9001 PYROSHIELD, 9010/9011 PYROSHIELD XH or 5180 PYROSHIELD 5°F to 10°F.

MILL GEAR LUBRICATION

With proper installation, careful maintenance and proper lubrication, users can expect long, trouble-free life of their mill gears.

Because of the tremendous loads in the cylinder which must be rotated, tooth loading is tremendous. Gear protection is important. Replacement costs for pinions range from $11,000 to $50,000. The cost of bull gears are as high as $500,000 and can require up to one year lead time for replacement. In most cases, these mills operate continuously, and the loss of their production time is even more expensive.

Historically, asphaltic products have been used in this application and have serviced more as "cushioning com-pounds", than lubricants. Many have relied on lead for extreme-pressure capabilities and now are classified as hazardous materials. Even some unleaded asphaltics are considered cancer-causing because they contain polycyclic aromatic hydrocarbons (PAHs) which are considered a potent carcinogen by the International Association for Research on Cancer (IARC). Asphaltic products remaining in the bottom of the drums and in the drip pans pose possible health hazards and must be disposed of at an approved hazardous waste disposal site. Normally, 25% of the amount of product purchased remains to be disposed of at a cost of $.50 to $2.00/lb. depending on the proximity of the disposal site. This is both inconvenient and costly.

In addition to health and disposal concerns, users of these products have been plagued with housekeeping problems with these black, sticky products. The asphaltic product also builds up in the gear tooth roots. Because of this, many plants experience worn pinions due to misalignment, pinion bearing failure and, sometimes, break-age of pinion pedestal bolts and disintegration of the pedestal concrete foundation.

Mill gearing may be either closely shrouded, loosely shrouded or unshrouded. In closely shrouded gear systems on ball mills, LE recommends 9000/9001 PYROSHIELD or 9010/9011 PYROSHIELD XH to enable the small amount of used lubricant to "flow" out of the shroud and be collected in a suitable container. Where gear shrouding is very loose and product build-up is not a concern, then the non-melt 5180 PYROSHIELD can be recommended.

THE LUBRICATING SYSTEM

In open gear lubrication, it is critical to get the right quantity of the right lubricant at the right time to the right spot. An automatic spray type lubrication system is used for lubricating the gear train and does just that. Farval and Trabon are the most commonly used.

In these systems, air is used to pump and carry the lubricant to the gears. Although there are variations of these systems, the basic design and principles are the same.

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Designed for automatic operation, the system uses an air-operated pumping unit which feeds the system directly from the drum of lubricant. These systems are.designed to operate with plus or minus 80psi air and it is critical that they do so to insure adequate lubrication to the mill gears. An electrically driven time clock or electronic timer controls the frequency of spraying and is fully adjustable for various lubricating cycles. They usually contain a warning device to indicate when the equipment is malfunctioning, such as during an air supply failure, and/or lack of lubricant.

The amount of lubricant supplied to the mill gears by the system as a whole is determined by the timing, as well as by the measuring valve size and adjustment. A typical automatic system is shown in Figure D.

Depending on the type of plant and mill location, some are exposed to cold temperatures during the winter months. During the winter, it is important that the lubricant can be pumped and sprayed at these temperatures. While both LE's 9000/9001 PYROSHIELD, 9010/9011 PYROSHIELD XH and LE's 5180 PYROSHIELD provide the lubrication protection required by these mill gears, the correct lubricant must be used at lower temperatures if drum heaters are not part of the lubrication system. Should the temperature to which the lubricant and lubrication system is exposed be less than 55°F (13°C), LE's 9001 PYROSHIELD or 9011 PYROSHIELD XH is the lubricant to use. Above this temperature either LE's 9000 PYROSHIELD, 9010 PYROSHIELD XH or LE's 5180 PYROSHIELD may be used. Farval, a major lubrication systems manufacturer, reports that the asphaltic type products can harden in the lube lines and valves. This can cause lubricant starvation. If this situation is not detected before damage occurs, catastrophic failure can result.

We have observed that the close tolerance internal components of these lubricant systems, in particular the pistons in the reversing valve, are subject to abrasive wear due to the asphaltic compounds. Also, these components must handle 4 to 7 times more volume of the asphaltic compounds than either LE's 9000/9001 PYROSHIELD, 9010/9011 PYROSHIELD or LE's 5180 PYROSHIELD. Thus wear related failures occur drastically sooner with asphaltic use

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Because lubrication system malfunction is widespread with the use of asphaltic compounds, and an inevitable occurrence even with LE's 9000/9001 PYROSHIELD, 9010/9011 PYROSHIELD XH or LE's 5180 PYROSHIELD, the margin of safety provided by the lubricant is very important to operators. Operators have reported to us that when lube system malfunction occurs with asphaltic in service, temperatures begin to rise dramatically within an hour and in some cases they have had fires break out. LE's 9000/9001 PYROSHIELD, 9010/9011 PYROSHIELD XH and LE's 5180 PYROSHIELD have been tested to determine the margin of safety they provide. These results have shown LE's 9000/9001 PYROSHIELD, 9010/9011 PYROSHIELD XH and LE's 5180 PYROSHIELD provide up to two eight hour shift margins of safety before pinion temperatures rise.

THE LUBRICANTS

Most users of asphaltic materials have remained so because of no knowledge of alternatives. Many molybde-num based lubricants have offered some improvement as far as protection and consumption reduction; however, no product has proved to have the capabilities which approach those of LE's PYROSHIELD products.

The lubricant cannot overcome weak foundations, poor gear alignment, undetected vibrations, poor maintenance and an inadequate lubrication system. Any, or a combination of these adds extra loads of unknown magnitude on top of the designed gear load. Superior lubricants are not only desired but absolutely necessary to protect these gears from damage and excessive wear, and to provide long gear life and the lubrication margin of safety that is required. The advanced technology of LE's 9000/9001 PYROSHIELD, 9010/9011 PYROSHIELD XH and 5180 PYROSHIELD as "lubricants" versus conventional asphaltic cushioning compounds does just that. LE's PYROSHIELD products are the latest technological breakthrough in high performance lubrication. These superior lubricants were specifically developed for applications subjected to high load, heavy shock and the high contact point temperatures experienced during boundary lubrication conditions. LE's proprietary wear-reducing additive ALMASOL®, is used with a unique combination of EP additives, which are synergistic with LE's ALMA-SOL, to provide outstanding load-carrying ability. Asphaltics have a Timken OK load of only 20 to 25 pounds as compared with 70 pounds for LE's 9000/9001 PYROSHIELD or LE's 5180 PYROSHIELD and 90 pounds for LE's 9010/9011 PYROSHIELD XH. Plants with mills lubricated with LE's 9000/9001 PYROSHIELD, 9010/9011 PYROSHIELD XH or 5180 PYROSHIELD have eliminated the problems with their previous gear lubricant and obtained additional benefits.

The Problem: Health, safety and disposal problems with asphaltic products and disposal costs and inconvenience.

The Benefit of LE: There are no disposal problems using the LE PYROSHIELD Products. The H1 diluent evaporates within minutes of application, and poses no environmental problems.

The Problem: Messy, black products-drip pans, equipment, housekeeping problems, unhappy workers and extra labor to keep clean.

The Benefit of LE: With the clean purple lubricants, 25% of previous product is used due to the superior lubricating ability of LE's PYROSHIELD products.

The Problem: Build up in tooth roots. Alignment and bearing problems.

The Benefit of LE: There is no buildup. Should pulverized material buildup occur on the gear teeth, LE's 609 ALMASOL® Vari-Purpose Gear Lubricant can be used to clean the gears.

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The Problem: Gear wear, with low or no margin of safety.

There are 10°F to 30°F lower pinion temperatures which means better lubrication, less friction and wear, which in turn gives longer gear life and a greater lubrication margin of safety to protect gears. "Healing" of moderate gear damage has also been observed.

The Benefit of LE:

Lubrication system malfunctioning because of black, sticky products. The Problem:

There are no malfunctions caused by the lubricant. In fact, a lubrication system was purposely shut off for two eight hour shifts with no gear temperature rise. This confirms the extra protection of LE's 9000/9001 PYROSHIELD, 9010/9011 PYROSHIELD XH and 5180 PYROSHIELD even when the lubrication system has mechanical problems:

The Benefit of LE:

These benefits have been experienced with all types of mills operating in various industries. Previous products used among others have been:

Whitmore Surtac Petron Gearshield Molub-Alloy 907B and 957 Mobiltac Exxon Surret Texaco Crater

SUMMARY

Mill open gears are subjected to high shock loads and require lubricants that will provide the protection necessary to give the long gear life that users expect while eliminating health hazards, disposal problems, housekeeping problems and minimizing lubrication system malfunctions. All this has been proven to be accomplished through the use of LE's 9000/9001 PYROSHIELD, 9010/9011 PYROSHIELD XH or LE's 5180 PYROSHIELD high performance lubricants from Lubrication Engineers,® Inc.

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300 Bailey Ave, Fort Worth, TX 76107 | 817-834-6321 | 800-537-7683fax 817-834-2341 | http://www.le-inc.com LI 20108

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