| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-221-14-3
6-16.
PROPELLER, PROPELLER SHAFT, AND STUFFING BOX (Continued).
LOCATION/ITEM
ACTION
REMARKS
ALIGNMENT (Cont)
at rest, the bottoms of the
shaft journals should be in
contact with the bearing
material. The bearing
clearance at the horizontal
centerline of the journal
should be equally divided.
c.
In order to obtain and
maintain acceptable align-
ment, the fundamentals of
long-established and good
practice are as follows:
(1)
Each bearing shall guide
and support the propor-
tionate share of the
shafting weight and
load.
(2)
When shaft couplings
are broken, each
overhanging shaft
length will deflect
from the true shaft
centerline, depending
upon the amount of
overhanging shaft
weight, the loading,
and the location of
the bearing supports.
(3)
Alignment of sag charts
have been prepared for
most vessels showing
relative flange positions
and the angular slopes of
shafting with the coupling
bolts have been removed.
With tie bearings adjusted
to obtain these measure-
ments, proper alignment
of the shafting is insured
when the coupling bolts
are secures.
6-191
|
||
|
||
