Pyroshield - Open Gear Lubricants

Open Gear Lubricants

Grinding, pulverizing, breaking - open gears can take a beating

Large open gears take a severe beating on a daily basis. Challenging conditions include outdoor environment, extended service operation, dust, silica, water, extreme heat and extreme pressures. Open gear lubricants must be specially formulated to keep equipment operating at maximum efficiency. Whether you operate a ball mill, rod mill, breaker mill, or kiln, Lubrication Engineers Pyroshield® line of heavy-duty synthetic open gear lubricants can help protect your valuable equipment and keep it running harder and lasting longer. If you are interested in making your large open gears last longer, lowering the amount of lubricant you use, and reducing overall maintenance expenditures, then we have the solutions for you.

Pyroshield open gear lubricants are heavy-metal-free

LE Open Gear Lubricants Chart
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LE Open Gear Lubricants

After several years of proving the superiority of Pyroshield open gear lubricants, LE improved the formula, making it even better! The improved Pyroshield formula no longer contains any heavy metals or lead. LE also increased the film strength of the lubricants, making them easier to pump - particularly for automatic lubrication systems. Finally, LE raised the viscosity index, removing temperature-based fluctuations that would be seen during actual use.

Pyroshield meets or exceeds all relevant manufacturer specifications for open gear applications. It is providing reliable lubrication in coal power generation facilities, cement kilns, and metal and mineral mining operations all over the world. Pyroshield's ability to protect open gears from extreme pressures, heavy loads and high temperatures is virtually unequaled.


No shutdown required when converting open gears to Pyroshield

Pyroshield Family

Pyroshield does not require the equipment to be shut down during the conversion process. Even better, LE's certified independent consultants can be there to assist you during the conversion process. Pyroshield can be applied manually or through automatic spay systems and clings tenaciously to the gear. Pyroshield appears translucent in use, allowing for the visual inspection of the open gear.


Pyroshield contains Almasol

Almasol Powder

Almasol® is LE's proprietary solid film additive adding extreme heat stability, anti-wear protection and extreme pressure properties to Pyroshield products. Originally developed for use in the late 1950s, this soft, tan powder has been incorporated into many of LE's industrial lubricating oils and greases. Unlike molybdenum disulfide and other solids used in lubricants, Almasol will not build up on itself and adversely affect machine operation with close tolerances or create hard deposits that lead to housekeeping issues.

Learn more about Almasol


Unshrouded Open Gear Grease

Pyroshield Syn Open Gear Grease

Pyroshield Lubricant

Pyroshield Syn Open Gear Grease (5100, 5180 & 5182) is formulated with high-viscosity 100 percent synthetic base oil, a non-melting thickening system a heavy-duty synthetic lubricant developed for large unshrouded open gears in the mining, mineral processing and cement industries, and for other severe service applications that require a lubricant with superior wear protection, exceptional load-carrying ability, outstanding tackiness and ease of application at various temperatures. It also works well for applications in which gears experience high point-of-contact temperatures of 327°C (620°F) and above.

A product of advanced lubricant technology providing boundary lubrication, unmatched performance and versatility, Pyroshield Syn Open Gear Grease and LE's proprietary heat stable additives. It contains a synergistic mix of Almasol, LE's exclusive wear-reducing additive, and a unique combination of extreme pressure additives.

Superior Performance

  • Outperforms similar products in wear protection and load-carrying ability
  • Carries 90-lb Timken OK load
  • Resists shock loading
  • Provides excellent oxidation resistance and rust protection

Outstanding Tackiness

  • Clings tenaciously to surfaces
  • Resists removal by water, heat and other severe conditions

Wide Temperature Range

  • Does not thin or run at high temperatures
  • Has no dropping point (will not melt)

Shrouded Open Gear Heavy Viscosity Oil

Pyroshield Syn Hvy & XHvy Open Gear Lubricants

Pyroshield Syn Hvy & XHvy Open Gear Lubricants (9000 & 9011) 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 solid additive, and a unique combination of extreme pressure additives.

LE Pyroshield on Gearset
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LE Pyroshield on Gearset

Superior Gear Protection

  • Exhibits exceptionally high film strength, helpful for withstanding high-load, heavy-shock applications
  • Clings tenaciously to metal surfaces, without accumulating
  • Carries 95-lb Timken OK load
  • Achieves 14th stage pass in FZG gear test
  • Reduces gear temperatures by 5-15%

Environmentally Friendly

  • Contains no lead or heavy metals
  • Can be disposed of like any other nonhazardous petroleum oil
LE Pyroshield on Gearset
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LE Pyroshield on Gearset

Easy To Use

  • Appears translucent in use, facilitating visual inspection of open gears
  • Can be applied manually or through automatic spray
  • Eliminates cleanup-related downtime

Cost Effective

  • Performs better and lasts longer than competitive lubricants
  • Ensures trouble-free operation, fewer failures and less downtime
  • Reduces maintenance costs for repairs, part and labor
  • Reduces lubricant consumption by up to 80%
  • Reduces energy consumption

Automatic lubrication systems for open gear applications

LE Pyroshield on Gearset
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LE Pyroshield through auto lube system

Pyroshield lubricants can be used in automatic lubrication systems, which apply the lubricant to the bull or ring gear teeth at set intervals in metered amounts. Pyroshield lubricants will not clog the lube system and there are no solids to block or abrade measuring valves. It also will not accumulate on nozzles, clog or otherwise interfere with the spraying process.

We can help you design and set up your automatic lubrication systems. As an authorized distributor of well-known automatic lubrication brands, LE is very familiar with the equipment and technology needed to put together a total solution that meets your needs.


To learn more about our gear oils and related lubricant reliability products and services, please contact us today.

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