Last Updated：2025/12/30
Sentence
In
1930
the
proposal
of
placing
all
axles
of
a
steam
locomotive
on
roller
bearings
was
viewed
so
suspiciously
that
the
Timken
Roller
Bearing
Company
couldn't
even
obtain
permission
to
equip
an
existing
engine
at
its
own
expense.
(It
ended
up
buying
a
demonstrator
loco
and
equipping
that
with
roller
bearings
instead.)
Quizzes for review
In 1930 the proposal of placing all axles of a steam locomotive on roller bearings was viewed so suspiciously that the Timken Roller Bearing Company couldn't even obtain permission to equip an existing engine at its own expense. (It ended up buying a demonstrator loco and equipping that with roller bearings instead.)
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