×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Sleeve bearings - Bump washer

Sleeve bearings - Bump washer

Sleeve bearings - Bump washer

(OP)
I have seen specification for motors with sleeve bearings which states the rotor end play shall be 12 mm ( for example ).And the clearance shall be exclusive of the bump washer. Bump washers shall carry no load in normal operation. My question is what is a "bump washer"

RE: Sleeve bearings - Bump washer

"Bump washer" probably refers to a crude non-pad, annular thrust bearing which is intended to react transient-only reversed thrust loads on the rotor shaft. They are sometimes called "thrust washers" or "thrust bumpers". On vertically-mounted motors with fluid film bearings, the main thrust bearing may be either dual-directional or uni-directional. For the latter type, it may be necessary to provide a thrust bumper on the thrust runner side opposite the bearing loading side. Metal to metal thrust bumper contact may be allowable if contact load and shaft rotational speed are sufficiently low. Otherwise the thrust bumper surface should be a bearing material such as carbon-graphite, plastic or dense fabric and may be an insert into the contacted metal component. Thrust bumper thrust load endurance capabilities can be enhanced by using equally spaced grooving to introduce several "pads" into the load surface or by special surface contouring like Rayleigh step configurations.

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!


Resources