Re: ADMIN: Freight Car Terminology
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I believe the term for these, at least with the mechanical folks, is
constant contact side bearing.
In the last three or fours (excuse the OT nature except for
comparison) years these have been removed and replaced by an upgrade that
doesn't include the to lower rollers with needle bearing inserts.
Eventually all things merge into one and a river runs through
In a message dated 2/28/2015 6:09:42 P.M. Pacific Standard Time,
reason is that friction bearings really do exist and are present on
freight car trucks -- but they are NOT the same thing as journal
picture illustrates them nicely -- See those items on top of the
bolster about 1/4 way in from each side? Those are friction bearings.
are corresponding parts attached to each freight car's bolsters.
prevent direct contact between the static parts of the
carbody and the trucks,
as the car rocks (tilts) from side to side as it
rolls down the track.
Some HO trucks replicate these bearings, but most
do not. The ones shown in the
photograph above are very accurate
representations. You can find them advertised
in Car Builder Cycs, since
they are a wear item and are sold by third parties.
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