Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Ball Bearings running in Aviation Fuels 1

Status
Not open for further replies.

RedCoat999

Mechanical
Oct 21, 2003
25
Does anyone have any experience with derating ball bearing life for running with aircraft Jet A type fuels as the only source of lubrication (flooded)?
Thanks
 
Replies continue below

Recommended for you

No. Never tried that.

A general reflection is that an all-steel bearing probably will not work very well. There is no lubricating film and the metal/metal interface is known to be vulnerable and cannot support much load.

I would look into hybrid bearings with ceramic balls. They do avoid the metal/metal interface and should have a better chance of survival. A hybrid bearing can run dry for quite a time, which an all-steel bearing cannot.

Gunnar Englund
 
If the loads are light, you may look into plastic bearings with either stainless or glass balls. If you had not mentioned "aircraft", I would have recommende our Cobra Solid Lubricant, which will run in a stream of solvents!

Russell Giuliano
Unique Technologies Associates - Cobra Solid Lubricant
 
Hi,

Can you advise any speeds and loads? This way we can work out how the surfaces will be loaded and then select material options.

Cheers

Neville
 
Speed = 5000 rpm
Radial Load = 175 lb
Required bearing bore size = 12mm
Fluid Viscosity = <1 cs

(by the way, if user AHRBearing is anything to do with I couldn't get to any pages on the website other than the main page)
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor