Handbook Of Shaft Alignment Episode 3 Part 9 pdf

Plot half 10 mils of this measurement here.E FIGURE 8.8 Plotting the pump shaft in the side view... Side viewScale: 20 mils Motor Plot half 20 mils of this measurement here... Motor Top

Plot half (10 mils) of this measurement here.

E

FIGURE 8.8 Plotting the pump shaft in the side view.

Side view

Scale:

20 mils

Motor Plot half (20 mils) of

this measurement

here.

Sag compensated readings

0 T

B

W E

Motor Top view East Pump

20 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.

Motor Top view East Pump

Plot half (30 mils)

of this measurement here.

Motor 0 E

W +60

30 mils

FIGURE 8.12 Plotting the motor shaft in the top view.

Motor shaft

centerline

Up

FIGURE 8.14 Movement solutions for the inboard feet of both the motor and the pump by pivoting at the outboard feet of both machines.

No mils available to remove

No shims available to remove

Baseplate restriction points

FIGURE 8.15 Movement solutions using the outboard feet of the fan and the inboard feet of the motor

as pivot points.

Motor Top view

Pivot hereEast boundary line

West boundary line

Move 14 milseast here

36 mils ofpossiblemovement tothe east here

32 mils ofpossiblemovement tothe east here

Move 22 milswest here

8 mils ofpossiblemovement

to the westhere

40 mils ofpossiblemovement

to the westhere

4 mils ofpossiblemovement

to the westhere

Move 20 milswest here

Scale: 5 in

Bolt bound

to easthere

PumpEast

FIGURE 8.16 Applying lateral movement restrictions to arrive at an easy sideways move within the east and west corridors.

Bracket clamping positions

Suction flange moves up

250 mils at this point

Pivot here

Raise 47 mils up

Motor 0T

B

T

B–60

+10 +90

+80

0 –10

Sag compensated readings

–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.

Mils per inch

en t n

ec es sar y

Ac ce pta ble Excellent

FIGURE 9.6 Recommended maximum misalignment of flexibly connected rotating machinery.

Roll Motor

Gear

Upview

Roll Gear

Scale:

10 in.

or 20 mils

s Motor

SideAlignment model “fold axis”

South

East

Up Side view

FIGURE 17.23 Right-angle drive system ‘‘folded’’ side view alignment model.

other and in the X − Y plane but one

shaft/sheave is to the right of left of the

but one shaft/sheave is rotated through the Z- axis.

Skew—the shafts are not in the same plane and one shaft/sheave is rotated

X Y Z

Combination—this is the most common type of misalignment condition (and the most complex) where the shafts are not in the same plane and one shaft/sheave

and Z- axis.

FIGURE 18.17 Types of belt and sheave misalignment conditions.

Lower position gap readings Upper position gap readings

_ mils _ mils

_ mils _ mils

_ mils _ mils

_ mils _ mils

• Measure the distance between the

outboard and inboard bolts of both

machines

• Measure the distance from the inboard

feet to where the straightedge will be

placed to capture the gap readings on

the sheaves

• Measure the distance between the shaft

centerlines

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 measurementdistances with straightedge

in upper position

Sheave measurementdistances with straightedge

Bolt hole boundary conditon

35 mils west 22 mils east

180 wide x 100 tall grid

Apparent pump shaft centerline (i.e outer surface with runout)

Balance ring measurement plane

Pump shaft measurement plane

Adjusting nut measurement plane

0NS

0NS

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

180 wide x 100 tall grid

Pump shaft centerline measurement plane Scale:

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

West East

Pump shaft centerline

Translate 51 mils to the west

Thrust runner is not perpendicular to centerline

of rotation

Conical whirling orbit

is produced with locus at thrust runner

FIGURE 21.66 A nonperpendicular thrust runner face will force the rotating assembly to orbit.