Design Engineering

Lubrication

Everlube Product
 

Definition - Lubrication is the introduction of a substance between the contact surfaces of moving parts to reduce friction and to dissipate heat. A lubricant may be oil, grease, graphite, or any substance-gas, liquid, semisolid, or solid-that permits free action of mechanical devices and prevents damage by abrasion and "seizing" of metal or other components through unequal expansion caused by heat. In machining, process lubrication also function as coolants to forestall heat-caused deformities.

Lubrication and Coatings - Most of our engineered coatings offer some level of lubricating properties. These lubricants are functional combinations of Molybdenum Disulfide, Graphite, PTFE and other engineered materials. Originally designed as aerospace lubricants, these dry film lubricants are now used in a wide variety of applications.

Solid film lubricants are films of resin, which bind lubricating powders such as MoS2 (molybdenum disulfide), graphite or fluorocarbon to a surface. Solid film lubricants provide lubrication in many situations where oils and greases are ineffective.


The following is a graphical example of lubrication and Bonded Coatings :

Example: When using coatings for Lubrication purposes, the lubricant acts as a buffer to assist with motion such as in the above bearing example.

Everlube Product

Environments for Lubrication

High and Low Temperatures
Our engineered coatings lubricate effectively over a wide temperature range - from -395° to over 2000°F. When operating temperatures exceed the range of fluid lubrication, solid film coatings should be used.


High and Low Loads
We offer engineered coatings that lubricate effectively while withstanding loads in excess of 250,000 psi, and they typically exhibit a lower coefficient of friction as load is increased. We also offer products that are very effective with extremely light loads.

Dry and Wet Environments

We offer engineered coatings that lubricate effectively in wet environments such as offshore drilling or in very humid locations. We also offer products that lubricate effectively in extremely dry environments such as desert climates.

Radiation and Vacuum

We offer engineered coatings that lubricate effectively in a high vacuum, as well as maintaining their lubrication ability in an environment exposed to radiation.


Environmental Conditions
The following table shows the wide variety of environmental conditions that E/M solid film lubrication can withstand while providing the necessary lubrication.

Coating Type Temperature Range Load Capacity Dry / Wet Environment Radiation Vacuum Speed
MoS2 Cryogenic to 750° F (in air) or 1200° F (in inert environment Up to 100,000+ psi Dry Poor Good Low to High
Graphite cryogenic to 1200° F (in air) or 2000° F (in inert environment) Extremely light to 40,000 psi Dry Good No Low to Very High
PTFE from -150° F to 500° F Extremely light to 10,000 psi Wet Poor Fair* Low


*varies with formulation


Application Examples

The following are examples of components with lubrication problems and the engineered coating services that solved the problem.



Component / Part
Problems Solved
Industry
Ball Valves & Seats Lubrication Pump & Valve
Bolts for Lock Assemblies Lubrication, Wear, Decorative Fasteners
Bullets Better Accuracy, Speed, Less fowling Industrial
Elastomeric Seals Lubrication Industrial
Main Springs for Subsurface Instruments Lubrication Industrial
Missile pneumatic actuation systems Lubrication, Corrosion Military
Press Nuts Lubrication Fasteners
Rubber Bumpers Lubrication Automotive
Screw Fasteners Lubrication, No Shedding Fasteners
Screw Shafts for High Speed Printers Lubrication Fasteners
Vane Motors & Bearings Lubrication, Friction Medical


Questions

Please see identify problems for a quick response to any type of lubrication and/or other questions that you have on how Everlube Products' coatings can help solve your design challenges.