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Re: Technical Discussion Train Dude not Knowing Vocabulary.

Posted by Jeff H. on Mon Oct 13 19:00:57 2008, in response to Re: Technical Discussion Train Dude not Knowing Vocabulary., posted by JournalSquare-K-Car on Mon Oct 13 18:05:08 2008.

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No, oddly enough Train Dude does have some command over railroad
technical vocabulary. Go figure.

Technically the "journal" is a surface on a shaft which has been
precision ground to mate with a friction bearing. On a powered
axle, in addition to the journal surfaces for supporting the car
body weight, there are journals for supporting either the traction
motor, if axle-hung, or the gearbox unit.

But in railroad usage, "journal bearings" always refer to the
load-supporting bearings near the wheels. Even when those bearings
are of a roller design.

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