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Re: [Land-speed] King Pin Bearings

To: "John Burk" <joyseydevil@comcast.net>, <Saltrat@pahrump.com>
Subject: Re: [Land-speed] King Pin Bearings
From: "23weldon" <23.weldon@comcast.net>
Date: Fri, 26 Feb 2010 19:43:49 -0800
Skip -- Check out Torrington drawn cup needle bearings.  There are a lot of 
issues to consider there, including brinelling; but first go look at their 
engineering data and then let's talk.  You can harden and grind kingpins to 
an exact diametral fit (like a few tenths); but picking the right alloy and 
hardness requires a pretty close look at the loadings.  You don't want the 
kingpins so hard that they are subject to stress concentrations and fatigue. 
I suspect that 8620 with a heavy case hardening may be the answer.  But 
don't take my answer "to the bank" quite yet.
Ed Weldon

----- Original Message ----- 
From: "John Burk" <joyseydevil@comcast.net>
To: "LandSpeed List" <Land-speed@autox.team.net>
Sent: Friday, February 26, 2010 7:15 PM
Subject: Re: [Land-speed] King Pin Bearings


> Skip
> You could ream the spindle bores for the next size rollers above the 
> bushing wall thickness . Brinelling could be a problem and you'd need a 
> way to retain the lower rollers . Is your scrub radius small . If not , 
> correcting it would reduce the friction of standard bushings .
> John

>> List,
>> I have been looking for a better bearing system for the king pins on the 
>> liner. I want to use tapered rollers instead of bushings but I can't find 
>> what I want. I want to do this to firm up the inline front end and make 
>> alignment more accurate.
>>
>> Is there a kit to replace bushings with tapered rollers? The front end is 
>> early Chevy pickup.
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