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Figure 6 ---5 Drive Coupling
* Repair Kit P/N 02250127---781
Compressor Hub --- This hub has a slide fit to the
compressor. A special shrink disc hub is used to
transmit power. Slide compressor hub and shrink
Figure 6 ---6 Bolt Tightening
TABLE 1--- INSTALLATION DATA (Refer to Figure 6---6)
Tightening Torque
Bolt
Description
Adaptor Bolt
28 in./ 38cm
Drive Bolt
169 ft---lbs./ 229 Nm
(I) Angular misalignment in inches equals maximum A minus minimum B as shown in Figure 7---6. DO NOT exceed values in Table above.
Coupling Gap
ft.---lbs/Nm
(inches/cm)
(oiled)
7.0 ± .015 in./
17.8 ± .04 cm
MAINTENANCE
disc assembly on to the compressor shaft. Shaft
should be recessed 3/8" (9.5mm) from the face of
the hub. Gradually tighten all shrink disc locking
screws to 42 ft.---lbs. (57 Nm) (see Installation of
Shrink Disc and Figure 6---6).
STEP 2 --- CHECK ALIGNMENT
Angular --- Take readings with an inside microme-
ter at 90_ intervals between flange faces. If a dial in-
dicator is used, compensate for sag and attach it
on one shaft and rotate the hub 360_ while taking
readings on the flange face as shown. DO NOT ex-
c eed instal l a tion A N GU LA R l imit spec if ied in
1
. When using a dial indic a tor, the best r esul ts ar e
achieved by rotating both driver and driven shafts
together.
CAUTION
!
Dial indicator face readings should not be used
on journal bearing equipment due to the liberal
end float inherent in such a design.
Max. Operating Misalignment
Coupling Parallel
Offset
(inches/cm)
.005 in./ .01cm
Section 6
Tabl e
Angular
(I)
degrees
inches/cm
.005 in.
.5
.01 cm
33
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