please don't have the design changed to eliminate the Delrin bearing
surface. If these ball joints are designed like many modern ball joints
it will be constructed of a cast steel body that attaches to the a-arm.
Inside the steel body is a Delrin cup that supports the steel ball and
tapered stud with the castellated nut. Delrin in this capacity is a
superior material to an older all steel design. Delrin wear surfaces can
be replaced and ball joint assemblies could potentially be rebuilt just
by replacing the Delrin material. Delrin has similar characteristics as
steel under compressive loads. Delrin has a low friction coefficient
resulting in less wear to the ball portion of the joint, it also
maintain a lower lubricant temperature and less lubricant loss from
thermal expansion and lower viscosity.
Read some information on Delrin.
http://plastics.dupont.com/NASApp/myplastics/Mediator?id=30
-Dave Dearinger
-1966 1600
ljordan704@netscape.net wrote:
> Hi List,
> I mispoke about the ball joint construction in my previous post. The ball
>joint is not delrin but the bearing surface is-the housing is steel. This is
>the modern design previously mentioned.
>
> However, Rareparts has informed me this morning, in response to my inquiry
>yesterday, that they are able to do an entirely steel on steel part. So the
>design is being changed to provide an even stronger part.
>
>
> Any other questions please ask. I hope to answer other questions shortly.
>
> Linda
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