×
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

Bolt circle definition

Bolt circle definition

Bolt circle definition

(OP)
Hi,

I am developing anew heavy commercial wheel family that has a new rim specifications and lower load index. By the new LI, lower, the new wheel family can not use same bolt circle and bolt pattern due to security.

The proposal is to keep bolt circle and change the number of bolts, but my question is: there is a way to calculate structural strength of wheel bolt? What is the considerations? I do not want use CAE methods now because it is under study and I need to investigate a lot of proposals.

Thank you,

Edcsd.

RE: Bolt circle definition

It's a little unclear, but if you are designing a wheel, the vehicle's bolt circle is defined by the vehicle manufacturer and any wheel that would be put on the vehicle has to fit it.

So I think you need to define what vehicles the wheel is going to be designed for - and that would also define the load carrying capacity - and then match what the vehicle's bolt circle is.

RE: Bolt circle definition

I don't know about "new rim specifications" being OK or not, depending upon what you're inferring here. If you're speaking in terms of rim profile or shape, I would think you're going to have to follow some sort of existing standard that's out there, such as T&RA. The rim will have to fit existing tires, no? Therefore, if the tire follows a standard, then so will your rim.

Tim Flater
NX Designer
NX 8.0.3.4
Win7 Pro x64 SP1
Intel Xeon 2.53 GHz 6GB RAM
NVIDIA Quadro 4000 2GB

RE: Bolt circle definition

(OP)
So it not too clear and I'll try to clarify my question.

Imagine one wheel 17,5 x 6,75 - 6 holes 143/141 K. I want to develop a new wheel with same characteristics changing only the number of bolt, 17,5 x 6,75 - 5 holes 143/141 K.

How may I get sure that 5 hole could carry the same load without use CAE method? Thank you.

RE: Bolt circle definition

As I said in my post, you're going about this backwards.

The vehicle determines what wheel fits on it, not the other way around.

One of the purposes of the difference number of lugs is to prevent using a lower load rated wheel - and while you aren't trying to do that, what you are doing makes no sense, because the GVW of the vehicle is the limiting factor.

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