High-Performance Synthetic Oil Provides Reliable, Long-Lasting Protection for Heavily Loaded Gearboxes

Duolec® Syn Gear Lubricant is formulated with 100 percent synthetic base fluid to ensure excellent high- and low-temperature performance. The synthetic base fluid also provides oxidation stability, which contributes to long lubricant life and a reduction in costly lubricant changeovers.

Duolec Syn Gear Lubricant provides uninterrupted operation and long service life for expensive gear applications, including heavily loaded gearboxes that are exposed to temperature extremes. With its special blend of clean gear technology additives, Duolec Syn Gear Lubricant works to prevent deposit formations in high-temperature applications and will not break down over time. The lubricant also provides exceptional low temperature flow properties, protecting gears during the coldest startups.

Featuring Duolec®, LE’s proprietary additive that reduces friction and increases oil film strength, Duolec Syn Gear Lubricant is able to withstand incredible loads and stresses from heavy-duty applications such as pulverizer gear units.

Unit of Measure

Benefits and Recommendations

Available Container Size

N/A 2,000 lb Disposable Tank

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GHS Statement

N/A For commercial and professional use only

Beneficial Qualities

N/A Provides Reliable, Long-Lasting Protection
  • Protects costly gears & other assets
    • Ensures uninterrupted operation
    • Promotes long service life for equipment
  • Reduces friction
    • Protects against wear
    • Prevents micropitting or “gray-staining”
  • Maintains high film strength
    • Provides extreme pressure (EP) protection
  • Will not break down over time
  • Can be filtered down to 3 microns with microglass filters without affecting performance
  • Reduces need for costly lube changes
  • Resists foaming

Withstands Extreme Conditions
  • Provides oxidation stability for long lubricant life
  • Prevents deposit formation in high temps
  • Exhibits exceptional low-temp flow properties
  • Can be used for heavily loaded gearboxes

Proprietary Additive

N/A LE’s proprietary additives are used exclusively in LE lubricants. Duolec® Syn Gear Lubricant contains Duolec.

Duolec® dual-acting additive imparts synergistic properties to lubricants, providing both wear-reducing and extreme pressure protection. The result of revolutionary technology designed specifically for use in LE gear lubricants, Duolec increases oil film strength and is temperature-activated to provide a protective layer that smooths metal surfaces and minimizes the effects of any contact, thereby reducing friction and preventing surface wear.

Performance Requirements Met or Exceeded

  • AGMA 9005-E02
  • Cincinnati Machine
  • DIN 51517 (3)
  • Flender
  • FVA 54 Micropitting
  • GMLS-2
  • U.S. Steel 224

Typical Applications

  • Pulverizer units
  • Other heavily loaded gearboxes that are exposed to temperature extremes

Asset Reliability Solutions

N/A Reliability Solution Products

Customer Testimonials

N/A 9822 Kronotex

Physical Characteristics - Typical


N/A Amber


N/A 220

Performance Test Results

Relative Density @ 60ºF/60ºF, ASTM D1298

N/A 0.859

Viscosity @ 100°C, cSt, ASTM D445

N/A 26.7

Viscosity @ 40°C, cSt, ASTM D445

N/A 227

Viscosity Index ASTM D2270

N/A 151

Flash Point °C (°F), (COC), ASTM D92

N/A 240 (464)

Pour Point °C (°F), ASTM D97

N/A -37 (-34)

Rust Test 4 hrs @ 60°C, DI H20, ASTM D665A

N/A Pass

Copper Corrosion 3 hrs @ 100ºC, ASTM D130

N/A 1b

Timken OK Load lbs, ASTM D2782

N/A 70

Four-Ball EP Weld Point, kgf, ASTM D2783

N/A 400

Four-Ball EP Load Wear Index kgf, ASTM D2783

N/A 80.6

Four-Ball Wear @ 75ºC, 1200 rpm, 40 kgf, 60 minutes, mm wear, ASTM D4172

N/A 0.29

Demulsibility Characterisctics EP 82°C, 90 ml H2O, ASTM D2711B

N/A % of H2O in oil = 0.3 ml of emulsion = 0 Total ml of free H2O = 84

Foaming Characteristics @ 24ºC/93.5ºC/24ºC, 3 sequences, ml of foam / time to break, ASTM D892

N/A 0/0;0/0;0/0

FZG Test Load Stage, ASTM D5182

N/A 12

FZG Scuffing Load Capacity Fail Stage A/8.3/90, ISO 14635-1

N/A 14+