Page 152 - Rotating Machinery Pratical Solutions to Unbalance and Misalignment
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Rotating Machinery: Practical Solutions
mined. This is accomplished by laying out the indicator positions
in reverse.
By constructing the horizontal line from the point where the
hot alignment line crosses the rim indicator line, both the rim and
face readings can be measured. Simply count or measure the dis-
tance from the indicator locations back to the cold alignment line.
In this example the rim reads plus one mil (+1) and the face reads
zero. When the face reading is zero, the two shafts are parallel
▲
R F ▲
OB IB IB OB
Cold align- Hot align-
ment line ment line
▼ • • ▼
–2
Current
–7 center line
▼
Figure 8-18. The Hot Alignment Line
R ▲ F ▲
OB IB IB OB
Cold align- Hot align-
ment line ment line
▼ • • ▼
–2
Current
–7 ▼ center line
Figure 8-19. Determining the Indicator Readings
