Description

 

Synthetic oils, greases and lubricants are based on compounds that consist of boron nitride (BN), chlorofluorocarbons (CFC), esters, diesters, silicone, polyglycol or mixtures of synthetic fluids and water.

 

Synthetic Oils, Greases, and Lubricants InformationSynthetic products are generally more expensive than non-synthetic fluids, but provide better fire resistance and cooling performance. The cost and heat transfer performance of semi-synthetic fluids falls between those of synthetic and soluble oil fluids.

 

Applications

 

Synthetic oils, greases and lubricants are used in a variety of industries and applications. Some products are designed for aerospace, automotive, marine, or military industries. Applications include:

 Synthetic Oils, Greases, and Lubricants Information

  • Bearings
  • Combustion engines
  • Processing equipment
  • Compressors
  • Piston Pumps
  • Gears
  • Final Drives
  • Circulating coolants
  • Flood or mist coolants
  • Insulating oils
  • Lapping vehicles
  • Lubricants
  • Heat transfer fluids
  • Thermal oils
  • Grinding
  • Metal working
  • Metal forming
  • Metal cutting
  • Hydraulic
  • Transmission
  • Quenchant
  • Vacuum fluids

 

Features

 

High water content fluids (HWCF) and high water base fluids (HWBF) are used in applications where leakage is likely to cause ignition.

 

Passivators or deactivators are applied to internal or machined surfaces.

 

Synthetic Oils, Greases, and Lubricants InformationProducts with extra pressure (EP) additives form a film to prevent sticking or seizing under heavy loads. Similarly, release agents prevent materials from sticking or adhering to underlying surfaces.

 

Synthetic oils, greases and lubricants can inhibit oxidation, corrosion, or microbial growth; provide sealing or barrier functions; or dampen shock and vibration.

 

Biodegradable products are designed to break down into harmless chemicals when released into the environment.

 

Non-foaming characteristics are achieved through the use of additives that break out entrained air.

 

Synthetic oils, greases, and lubricants that are rated for food, beverage, and pharmaceutical applications are also available.

 

Specialized products include system cleaners, sludge dispersing fluids and detergents.

 

Solid lubricants or dry film lubricants are designed to reduce friction, binding or wear; exclude water; or provide other specialized characteristics.

 

Specifications

 

  • Thermal conductivity is a measure of the ability to transfer heat.
  • Dielectric strength is the maximum voltage field that a material can withstand before electrical breakdown occurs.
  • Specific gravity is density normalized to water or another standard. Kinematic viscosity is the time required for a fixed amount of fluid to flow through a capillary tube under the force of gravity.
  • Units of measure include stoke, centistoke (1/100 of stoke) and Saybolt universal seconds (SUS).
  • The viscosity index is based on two temperature extremes.
  • Usage concentration is a volumetric amount.
  • Operating temperature is a full-required range.
  • Boiling point is the temperature at which synthetic oils, greases and lubricants boil.
  • Flash point is the lowest temperature at which substances produce sufficient vapors to form an ignitable mixture in air near the surface.
  • Fire point
  • Autogenous ignition (AIT) 

 

Standards

 

AGMA 99FTM17 - Synthetic oil for worm gear lubrication

ASTM D4304 - Mineral and synthetic lubricating oil used in steam or gas turbines

9986113 - Tackified, PTFE filled synthetic grease 

 

References

 

Image Credits:

 

Applied Industrial TechnologiesGrainger Industrial Supply | DuPont™ Krytox® Performance Lubricants

 

 


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