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Friction coating with good durability under high pressure?

Friction coating with good durability under high pressure?

Friction coating with good durability under high pressure?

    Trying to replace the grease in part of our system with a dry film lubricant.  The application is for a ball bearing (chrome steel) running in a helical (Rc 60 D2 steel) track.  The high pressure on the ball (~100ksi) and the twisting, scuffing motion at the contact patch causes the system to fail from an adhesive wear condition after only 3K cycles if run dry.
  The current grease is a high-moly grease with 30% molybdenum content.  It works well for over 1 million cycles, but is dirty and tends to contaminate other parts of the system.  We would like ot replace it with a dry film lubricant of some type.
  We've tried a number of options already TiN, WS2, MS2, but so far, the best we have tested has been Xylan (it got ~90K cycles before failure).  Unfortunately we need life in excess of 250K cycles.
  Any suggestions on coatings that might help get us to our bogey?  All help is appreciated.

                                   - Rich

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RE: Friction coating with good durability under high pressure?

Here are a few people I have worked with over the years and have gotten good service and results. I would query each and see what they have to offer.

Make several good coating especially their WS2

Handles the Everlube products

Tiodize Coatings

Coat just about anything with anything

Here is one that is pushing ZrN as wear coating.

RE: Friction coating with good durability under high pressure?

Try Flourolon 325/60 offered by Impreglon.

SW Inpreglon Houston offeres this coating.   Excellent adhesion, very low friction coef. and durable.  Great with high bearing loads.

I have had excellent results in simlar applications.

Let me know if ou try and it works

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