Top view
Scale :
Scale:
4 in.
10 mils
4 in.
10 mils
East
Side view
Up
FIGURE 8.3 Three-dimensional view of the side and top views.
Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 10 6.10.2006 5:37pm
Motor Pump
Side view
Scale:
20 mils
5 in.
10 mils
Pump
Up
Motor
Sag
compensated
readings
Plot half (10 mils) of
this measurement
here.
T
B
W
−10+30

Motor
Top view
East
Pump
Pump
20 mils
Scale:
5 in.
540 mils
Notice the scale
factor here.
Plot half (20 mils)
of this
measurement here.
0
E
W
-40
Pump
FIGURE 8.11 Plotting the pump shaft in the top view.
Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 13 6.10.2006 5:38pm
Motor
Motor
Pump
Pump
Top view
East
Plot half (30 mils)
of this
measurement here.

Side View
Pivot here
Overlay line
Raise 42 mils up
Up
Motor
Fan
Pivot here
Lower 72 mils
down
Fan shaft
centerline
No mils
available to
remove
No shims
available to
remove
75 mils of
shims
available to
remove
25 mils of
shims
available to
remove
Scale:
5 in. 30 mils
Baseplate restriction points
FIGURE 8.15 Movement solutions using the outboard feet of the fan and the inboard feet of the motor

possible
movement
to the west
here
Move 20 mils
west here
Scale:
5 in.
20 mils
Lateral movement restriction points
Bolt bound
to east
here
Pump
East
FIGURE 8.16 Applying lateral movement restrictions to arrive at an easy sideways move within the east
and west corridors.
Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 17 6.10.2006 5:38pm
0.250Љ
Motor
Pump
15Љ
Motor Pump
Up
Side view
15Љ 5.5Љ
Bracket clamping positions
Scale: 5 in.
Sunction flange location
7Љ 14.5Љ10Љ

readin
g
s
–70
Pump
Up
Side view
Raise 170 mils up
Raise 235 mils up
FIGURE 8.18 Overlay line positioned to correct the piping fit-up problem and align the shafts
with one move.
Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 19 6.10.2006 5:38pm
10 122 4 6 8 14161820222426
0.5
1.0
1.5
2.0
Maximum deviation at
either point of power transmission
Mils per inch
Speed (RPM x 1000)
Misalignment tolerance guide
Angle
degrees
0.10
0.08
0.06
0.04
0.02
R

FIGURE 9.6 Recommended maximum misalignment of flexibly connected rotating machinery.
Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 20 6.10.2006 5:38pm
Scale:
20 in.
50 mils
Up
Side view
Gear
Motor A
Compressor
Motor B
A laser alignment system was
used between Motor A and
Motor B. With Motor A named
as the stationary machine, the
following moves on Motor B
were indicated by the laser :
lower “near” foot 40 mils
raise “far” foot 15 mils
Baseplate restriction points
0
50
10
40
20
30
+
_
10
40

Sag
compensated
readings
−40
+36
Sag
compensated
readings
−50
−106
Motor B
Gear to spool
Compressor to spool
Gear
FIGURE 17.18
Four-element drive system side view alignment model of all
four shafts and the vertical restriction boundary.
Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 21 6.10.2006 5:38pm
Scale:
20 in.
50 mils
Gear
Motor A
Compressor
Motor B
Lateral movement restriction points
East
Top view
Motor B
Field readings

+40
+30
0
−80
0
0 +20
T
B
E W 0 +16
T
B
EW
T
B
EW
T
B
EW
A laser alignment system was
used between Motor A and
Motor B. With Motor A named
as the stationary machine, the
following moves on Motor B
were indicated by the laser:
move “near” foot 50 mils east
move “far” foot 45 mils west
0
50
10
40

Gear
Scale:
10 in.
or 20 mils
s
Motor
Side
Alignment model “fold axis”
South
East
Up
Side view
Scale:
10 in.
or 20 mils
10 in.
or 20 mils
RollMotor Gear
Right angle gear
“fold” axis
FIGURE 17.23 Right-angle drive system ‘‘folded’’ side view alignment model.
Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 23 6.10.2006 5:38pm
Top view
Scale:
5 in.
or 50 mils
5 in.
or 50 mils
Roll
Motor

where the shafts are not in the
same plane and one shaft/sheave
is rotated through both the the X-
and Z- axis.
FIGURE 18.17 Types of belt and sheave misalignment conditions.
Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 25 6.10.2006 5:38pm
Lower position gap readingsUpper position gap readings
Machine name
_______________
Date: __________________
Aligned by: _________________________
O North
O South
O East
O West
O Up
O Down
Straightedge
____ inches
____ inches
____ inches
____ inches
Straightedge
Machine name
_______________
O North
O South
O East
O West
O Up

of the machinery
Measure the distances across each sheave at the upper and lower gap measurement locations. Determine what type
of gap condition you have based on the four different configurations shown below. Using feeler gauges, measure and record the amount
of the gaps (in mils) in the appropriate window. Measure and record all of the distances shown in the diagrams below.
Sheave measurement
distances with straightedge
in upper position.
Sheave measurement
distances with straightedge
in lower position.
Upper to lower straightedge
separation distances
across each sheave.
___ inches
___ inches
FIGURE 18.26 V-belt and sheave alignment recording sheet.
Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 26 6.10.2006 5:38pm
Bolt hole boundary conditon
18 mils north
6 mils south
12 mils north
18 mils south
East
Top View
Motor
Fan
2 in.
or 20 mils
2 in.
or 20 mils

Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 28 6.10.2006 5:38pm
10 in.
Scale:
50 mils or 10 in.
East
Top view
Motor A
Roll A
Motor B
Roll B
Idler roll
Lateral movement restriction points
35 mils west
Pivot
22 mils east
Pivot
20 mils west
Pivot
50 mils west
Pivot
60 mils west
Pivot
FIGURE 20.38
Top view alignment model showing one possible solution.
Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 29 6.10.2006 5:38pm
180 wide x 100 tall grid
Apparent pump shaft centerline
(i.e. outer surface with runout)
Scale:
5 in.

add 8 mils
C–J bolt plane
add 5 mils
B–K bolt plane
add 2 mils
A–L bolt plane
add 0 mils
Translate 3 mils to the south
Actual pump shaft centerline of rotation
(i.e. compensated for runout)
Adjusted motor to pump
housing flange mating plane
12 mils TIR here
11 mils TIR here
6 mils TIR here
0
50
10
40
20
30
+
_
10
40
20
30
0
50
10

and 10 mils
Balance ring measurement plane
Adjusting nut measurement plane
30.4 in.
22.27 in.
8.15 in.
63 in. bolt circle dia
meter
Adjusting nut
Balance ring
Pump shaft
Ϫ103
Ϫ107
Ϫ107
Motor shaft center
line
Motor to pump housing
flange mating plane
I–J bolt plane
add 5 mils
H–K bolt plane
add 4 mil
G–L bolt plane
add 3 mils
F–A bolt plane
add 2 mils
E–B bolt plane
add 1 mil
D–C bolt plane
add 0 mils

40
20
30
0
50
10
40
20
30
+
_
10
40
20
30
FIGURE 21.28 As-found alignment model of motor and pump shaft as viewed in the east to west direction.
Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 31 6.10.2006 5:38pm
Thrust runner is not
perpendicular to centerline
of rotation
Conical whirling orbit
is produced with
locus at thrust
runner
Not 90Њ
FIGURE 21.66 A nonperpendicular thrust runner face will force the rotating assembly to orbit.
Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 32 6.10.2006 5:38pm
Piotrowski / Shaft Alignment Handbook, Third Edition DK4322_Plates Final Proof page 33 6.10.2006 5:38pm
class="bi x9c y1b0 w15 h39"