Friction coating with good durability under high pressure?
Friction coating with good durability under high pressure?
(OP)
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
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
RE: Friction coating with good durability under high pressure?
http://www.techtransfer.anl.gov/working/pdfs/Profile%20...
http://www.eurekalert.org/features/doe/2002-05/dnl-ncc0...
RE: Friction coating with good durability under high pressure?
http://www.microsurfacecorp.com/Index.htm
Make several good coating especially their WS2
http://www.morganadvancedceramics.com/news/everlube.htm
Handles the Everlube products
http://www.tiodize.com/main.html
Tiodize Coatings
http://www.orioncoat.com/list.html
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?
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