Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

material & coating for air bearings

material & coating for air bearings

material & coating for air bearings

I have just designed an air bearing for a lightly loaded application using calculations from a book.
It has been manufactured and worked superbly when first tried until the outer sleeve (aluminium) particles I think jammed it up when it rubbed when the air was turned off.
The shaft which is static is steel en24 T
I was trying to keep the cost down and didnt grind finish and hone the bore of the sleeve. Am I expecting too much here.
What materials should I use and surface treatment? and what surface finish is critical for it to work?

RE: material & coating for air bearings

Dear John,

Looks like you have run into the lubrication problem of keeping you friction materials apart. Morgan Construction makes a fluid bearing that is similar to an air bearing. When the rotation was stopped, the inside sleeve and the outside sleeve came into contact. They developed a hydrostatic lube system that kept the sleeves apart even at stand still.
Unless you design the parts as if there were no air, this will continue to happen.
There is a company that is in New York state that makes a plastic -teflon bearing for riding on a smooth shaft.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close