Pyroshield® Syn Open Gear Grease

Pyroshield Syn Open Gear Grease is 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 327ºC (620ºF) and above.

A product of advanced lubricant technology providing boundary lubrication, unmatched performance and versatility, Pyroshield Syn Open Gear Grease is formulated with high-viscosity 100 percent synthetic base oil, a non-melting thickening system 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.

Beneficial Qualities 

  • Increases uptime
  • Lengthens equipment life
  • Lowers lubricant consumption
  • Reduces maintenance

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
  • Reduces noise in large open gears

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)
  • 5180 remains pumpable at low temperatures


  • Works for open gears and heavily loaded sliding applications
  • Comes in grades 0 and 2 to meet the needs of manual and automatic systems
  • Also available in aerosol

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Product Codes: LE5180, LE5182, LE5100

Typical Applications

  • Various applications in the mining and mineral processing industry
  • Open gears and slides
  • Ball mill open gears
  • Kiln open gears
  • Bar screens
  • Dipper sticks
  • Circle rails

Proprietary Additive

LE’s proprietary additives are used exclusively in LE lubricants. Pyroshield Syn Open Gear Grease contains Almasol.

Almasol® solid wear-reducing additive is able to withstand extremely heavy loads, chemical attack and temperatures up to 1,900ºF (1,038ºC). 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.