Specifications

VC 5000 (PDF FORMAT) 9 ©Copyright Eaton Corp., 2010. All rights reserved.
2.4.1 Foundations must be set so distance ‘X”, shown on
Figure 9, is established. If the clutch is mounted on a
shaft having plain bearings, make sure the shaft is
centered within the bearings when establishing the “X”
dimension. Refer to Table 2 for appropriate “X” dimen-
sions.
Note : It is presumed that one of the shafts has been
properly located and anchored.
Figure 9
2.4.2 Fabricate a rigid bracket for supporting a dial indicator
and attach to the spider. See Figure 9.
2.4.3 Thoroughly clean the flange O.D. and the face of the
drum hub where alignment readings are to be taken.
2.4.4 Rotate the spider and take parallel alignment readings
off the drum hub flange O.D. If both shafts can be
rotated together, the alignment readings are less influ-
enced by any surface irregularities.
When recording parallel alignment readings,
“sag” of the indicator/indicator bracket must
be accounted for.
2.4.5 Angular alignment readings can be made by accu-
rately measuring the gap between the spider and
drum hub faces with an inside micrometer. If a dial
indicator is used, make sure to monitor and correct for
any axial movement of the shaft. To reduce the influ-
ence any surface irregularities may have on the angu-
lar alignment readings, index the spider 90 degrees
after taking the initial set of readings. Take an addi-
tional set of readings and index the spider another 90
degrees. Continue in this manner until four sets of
readings have been taken. For misalignment correc-
tion, use the average of the four readings at each
position. In other words, average the four top read-
ings, the four bottom readings, and each of the four
side readings.
2.4.6 Shim and shift the base of the movable shaft to correct
the misalignment. After tightening the base, recheck
the alignment and correct if necessary. Make sure to
check for a “soft foot” condition. Dowel or chock into
position after satisfactory alignment has been
achieved.
Note : On many applications, thermal growth of the
driving or driven machinery may result in unaccept-
able shaft alignment in a running condition. It is always
a good practice to make a “hot alignment” check and
the shim if necessary.
2.5 Installation of Element and Drum
(Narrow, Dual Narrow and Single
Wide)
2.5.1 Note the orientation of the drum flange with respect to
the air connection(s) on the element and slide the
drum into the element.
2.5.2 Separate the shafts as far as the bearing clearances
will allow and hoist the element/drum into position.
2.5.3 Attach the drum to the drum hub with the appropriate
fasteners. See Table 1. Make sure the bore in the
drum flange fully engages the pilot on the drum hub.
Use only the proper grade and number of fas-
teners. Using commercial grade fasteners
(Grade 2) in place of Grade 8 fasteners (where
called for) may result in failure of the fasten-
ers under load, causing personal injury or
equipment damage.
2.5.4 Install the air connection gaskets onto the air tubes.
The metal backup washer is to be positioned toward’s
the elbow (away from the spider). See Figure 10.
Note : Some older elements use a flanged air con-
nection tube and a thin gasket. See Table 3 for correct
part numbers.
Bracket
Dial Indicator
Inside Micrometer
X
D