Dry lubrication coatings
Dry lubrication coatings for hard-to-reach components.
Why Dry Lubrication Coatings?
Dry lubrication coatings are an important range of coatings distinct from low friction coatings. A low friction coating will typically have product sliding over it, a dry lubrication coating is found in enclosed processes, such as the mating surfaces of a valve.
Imagine a scenario where a grease or oil might be used but where a grease or oil is impossible to apply or maintain. Or where it would simply not survive – under water perhaps. Now a lubricant is needed but it has to be dry, or cured into place.
With a typical thickness of 10 to 15 microns, dry polymer coatings from Marcote are durable and suitable for tight tolerance components.
Performance Properties
- Controlled film thickness
- Rust prevention
- Dry and clean lubrication
- High load bearing
- Reduce friction coefficient
- Non-flammable
- Permanent lubrication
- Elevated temperature resistance
Materials used
Dry lubrication coatings contain lubricating pigments bound within a continuous resin matrix. They include PTFE / Graphite mixtures, PTFE / Molybdenum Disulphide mixtures and Molybdenum Disulphide on its own.
The choice of material will depend on the specific application. For example, load levels, temperature, anti-corrosion requirements and so forth. The Molybdenum Disulphide variants tend to work best with heavier and slow moving loads.
It is also possible to have a thermally sprayed option, Molybdenum.
Components Commonly Coated with Dry Lubrication Coatings:
- Bearings
- Bushes
- Fasteners
- Gears
- Hydraulic fittings
- Shafts
- Splines
- Valves
At up to 99.9% pure, Molybdenum is excellent where anti-galling and scuff resistance is required. In addition to sliding wear performance (it has a low surface hardness, typically around 25HRc) Molybdenum also has a low coefficient of friction, both static and dynamic and is electrically conductive.
Get Started with Marcote
The choice of this particular coating can be quite complex so let Marcote help you. Our extensive knowledge and bespoke solutions are here for you to benefit from. Contact us for more details.
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