×
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

Ball Bearing Mount/Housing Hardness

Ball Bearing Mount/Housing Hardness

Ball Bearing Mount/Housing Hardness

(OP)
Hello All;

I have a question concerning the hardness requirements for a ball bearing housing or shaft mount. Is there a minimum hardness for the shaft or housing to make sure that when a bearing is installed it receives the right amount of crush? Does the hardness matter?

RE: Ball Bearing Mount/Housing Hardness

Hardness matters only if the bearing moves relative to the mating surface, which is not usually a good thing.  

Crush (that's not really the right word, except in the case of split bearings) is determined by the size of the mating part.  Note that the bearing itself is elastic, so the interference with the mating part also affects the clearance inside the bearing.

Bearings are normally pressed into/onto one part or the other, depending on which part of the bearing is rotating, and I always forget which is which, so study the technical section of your bearing catalog.

 

Mike Halloran
Pembroke Pines, FL, USA

RE: Ball Bearing Mount/Housing Hardness

thread821-260253: Ball Bearing Mount/Housing Hardness
If you cross-post, you should cross reference your threads and direct all responses to one or the other.

I agree with Mike, it shouldn't matter unless there is relative movement, which sometimes occurs for outer ring / housing.  If there is relative movement, wear properties are important... I think hardness is a subset of that.

For rotating shaft, stationary housing, the inner ring is interference fit onto shaft, outer ring is clearance fit in housing.
 

=====================================
Eng-tips forums: The best place on the web for engineering discussions.

RE: Ball Bearing Mount/Housing Hardness

(OP)
To electricpete:

Ref: "If you cross-post, you should cross reference your threads and direct all responses to one or the other."

Sorry, I have no idea how to do that. I was just trying to reach people from both fields as I wasn't sure which would be more relevant.

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