Can a car wheel hub made of 7075 instead of steel ?
Can a car wheel hub made of 7075 instead of steel ?
(OP)
I know that wheel spacers/adapters are made of aluminum, but could a wheel hub made of aluminum too ? I haven't seen ali hubs for cars, only for motorcycles.
This could be a great way to reduce un-sprung weight and rotational mass.
Are there any reasons not to use aluminum (like 7075-T6) instead of steel ?
This could be a great way to reduce un-sprung weight and rotational mass.
Are there any reasons not to use aluminum (like 7075-T6) instead of steel ?





RE: Can a car wheel hub made of 7075 instead of steel ?
RE: Can a car wheel hub made of 7075 instead of steel ?
My car is half of a road car and half of a race car. I'm at 750kg now and trying to get to 700kg.
RE: Can a car wheel hub made of 7075 instead of steel ?
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Can a car wheel hub made of 7075 instead of steel ?
For long life in severe service the addition of an intermediate iron or steel insert housing in engines and hubs are recommended specifically to reduce the thermal expansion effect.
Harley crankcase half with cast in steel insert.
http://www.knuckleworks.com/images/cases/ph48i.jpg
RE: Can a car wheel hub made of 7075 instead of steel ?
RE: Can a car wheel hub made of 7075 instead of steel ?
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Can a car wheel hub made of 7075 instead of steel ?
I won't engineer the part (except for the CAD work) as it's not my field of expertise.
Why do you think the bearing will fall out under braking ? I was under the impression that under braking (and heating) the thermal expansion would exert even more pressure (preload) on the bearing.
Here you can see the upright which is already made of aluminum. I was lucky to buy one of the early cars who still had that.
RE: Can a car wheel hub made of 7075 instead of steel ?
The other issue to look at is impact toughness. In order to do this correctly in Al the part would be designed to carry the loads and then it would be forged.
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P.E. Metallurgy, Plymouth Tube
RE: Can a car wheel hub made of 7075 instead of steel ?
edit with proper link
http://www.nsk.com.br/upload/file/nsk_cat_e728g_3....
That is one fragile looking piece.
What is the application?
Can you post pix or linx to the rest of the suspension?
RE: Can a car wheel hub made of 7075 instead of steel ?
One big change is that we don't use separate wheel bearings, we buy complete hub units, http://www.au.nsk.com/Products/Automotive_Products... which are effectively a cassette with both bearings, pre adjusted, which can be pressed or bolted into the aluminium spindle. Hub 1 designs can still suffer from the press fit problem under braking. It is resolvable, with appropriate tolerancing and machining practices. Establishing those fits needs experimentation and/or Lame's equation. http://www.mydatabook.org/solid-mechanics/stress-f... for an example.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?