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Bending Rear Axles
Posted: Sat Jun 15, 2013 6:59 am
by w30bob
Hi Guys,
I picked up a long rear axle sometime last year and never really looked it over too well. This morning I was measuring it and noticed it's bent in the middle.....probably got bent by the UPS gorillas. I know these are forged, so they can be bent back, but is it possible to really get it straight without access to a machine shop........or should I toss it?
thanks,
bob
Re: Bending Rear Axles
Posted: Tue Jun 18, 2013 3:38 am
by Carter
I would be concerned that straightening would somehow weaken it Bob, not sure how but I would only use it if absolutely necessary. New ones are still available so why take the risk. Just my 2 cts.
Re: Bending Rear Axles
Posted: Tue Jun 18, 2013 5:08 am
by w30bob
Hi Carter,
I hear ya....my concern too. What got me thinking about it was first....it's not bent bad. If I roll it on the floor you can see the center of the axle wobble a bit.....and I don't know how much clearance there is between the axle tube and the axle when it's assembled. The reason I figure it can be bent is that forged crankshafts are easily bent by engine rebuilders to get them straight...and I figure a crankshaft is higher stressed than an axle. And I know forgings are a bit forgiving in that manner........just not sure in this instance. But I have no plans to use it anytime soon, so just figured I'd ask.
take care,
bob
Re: Bending Rear Axles
Posted: Wed Jun 19, 2013 3:29 am
by T. Highway
Bob,
Crankshafts have many more support journals than a axle shaft. I would be concerned about a vibration being created from the bent axle shaft and that in turn taking out a bearing / seals prematurely.
Bert
Re: Bending Rear Axles
Posted: Wed Jun 19, 2013 3:50 am
by w30bob
That's a good point Bert. So now the question becomes....what's an allowable runout for an axle shaft?
thanks,
bob