Springs and Dampers?

[shapelessheart]

What is the difference between

p6-Standard Press Fit (with easy dismantling-ferrous+nonferrous)
&
r6-medium Drive Fit with easy dismantling
what is the fit suggested between

hub and the wheel bearing
upright and the wheel bearing

The rear hubs have been incorporated from a car .so how d w know what tolerance was taken to manufacture it?

Please suggest how to decide fits for the above mentioned.

[shapelessheart]

What is the difference between

p6-Standard Press Fit (with easy dismantling-ferrous+nonferrous)
&
r6-medium Drive Fit with easy dismantling
what is the fit suggested between

hub and the wheel bearing
upright and the wheel bearing

The rear hubs have been incorporated from a car .so how d w know what tolerance was taken to manufacture it?

Please suggest how to decide fits for the above mentioned.

[Jersey Tom]

What does this have to do with springs and dampers?

As for press fits.. rule of thumb I use is about .0005" interference per inch of shaft diameter. Its tricky.

[D J Yates]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by shapelessheart:
What is the difference between

p6-Standard Press Fit (with easy dismantling-ferrous+nonferrous)
&
r6-medium Drive Fit with easy dismantling
</div></BLOCKQUOTE>

They're different magnitudes of interference fit for shafts (holes use upper case letters), specified in terms of nominal shaft diameter plus tollerence. You'd have to look them up in from an ISO standard.

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by shapelessheart:
what is the fit suggested between

hub and the wheel bearing
upright and the wheel bearing
</div></BLOCKQUOTE>

This should be specified by the bearing manufacturer.

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by shapelessheart:
The rear hubs have been incorporated from a car .so how d w know what tolerance was taken to manufacture it?

Please suggest how to decide fits for the above mentioned. </div></BLOCKQUOTE>

Unless you've got the hub drawings you'll never know.

To calculate what fit you'll need, work out what torque and/or force you need to transmit between the mating surfaces and the corresponding pressure on those faces required to generate that amount of friction. Apply thick walled cylinder theory and Lame Equations (pronounced La-may) to the problem and solve for the nominal diameters of the shaft and hole.