Eaton Airflex VC 5000 - Mounting Spider and Drum Hub; Shaft Alignment

VC 5000 9 ©Copyright Eaton Corp., 2019. All rights reserved.
2.3 Mounting Spider and Drum Hub
2.3.1 The spider and drum hub are bored for a press fit
onto their respective shafts. The interference is
approximately 0.0005 inch per inch (0.0005
mm/mm) of shaft diameter.
2.3.1.1 Ensure the shaft is clean and free of nicks or burrs
and check the shaft and bore diameters for proper
fit.
2.3.1.2 Tap the key into the keyway, making sure it
bottoms.
2.3.1.3 Apply a light coat of anti-seizing compound to the
shaft and key.
2.3.1.4 Heat the drum hub or spider uniformly to 250°F
(121°C) to expand the bore.
⚠
CAUTION
It is recommended the drum hub or spider be
heated in oil or an oven; however, since this is
not always possible, torches may be used.
When using torches, use several with
“rosebud” (broad-flame) tips and keep them
moving to avoid "hot spots". Check bore
temperature frequently to avoid overheating.
2.3.1.5 Slide the heated drum hub or spider onto the shaft
until the hub face is flush with the end of the shaft.
Hold in position and allow to cool.
2.4 Shaft Alignment
Note: The text in this section applies to gap
mounted applications; however, the alignment
tolerances apply to all types of mountings.
Parallel Alignment Tolerance (Offset):
Not to exceed 0.010 inch (0.254 mm) Total
Indicator Reading (0.005 inch (0.127 mm)
maximum offset).
Angular Alignment Tolerance (Gap):
Not to exceed 0.0005 inch per inch (0.0005 mm/
mm) diameter at which readings are taken (“D”
on Figure 9).
Note: The alignment procedure described below
has been used successfully on many VC clutch and
brake applications. Other procedures, of course,
may be used; however, the alignment tolerances
are the same regardless of the technique used.
TABLE 2
“X” DIMENSIONS (FIG 9)
SIZE
“X” Inch (mm)
SIZE
“X” Inch (mm)
SIZE
“X” Inch (mm)
SIZE
“X” Inch (mm)
SN11.5VC500
6.750 (171.5)
DN11.5VC500
13.375 (339.7)
SW14VC1000
11.875 (301.6)
SN14VC500 6.812 (173.0) DN14VC500 13.438 (341.3) SW16VC1000 DW16VC1000
12.750 (323.9)
SN16VC600
8.062 (204.8)
DN16VC600
15.938 (404.8)
SW20VC1000 DW20VC1000
SN20VC600
DN20VC600
SW24VC1000
DW24VC1000
SN24VC650
8.562 (217.5)
DN24VC650
16.688 (423.9)
SW28VC1000 DW28VC1000
SN28VC650 DN28VC650 SW32VC1000 11.938 (303.2) DW32VC1000 12.812 (325.4)
SN33VC650
DN33VC650
16.750 (425.5)
SW38VC1200
14.125 (356.7)
DW38VC1200
15.000 (381.0)
SN37VC650
DN37VC650
SW42VC1200
DW42VC1200
15.125 (384.2)
SN42VC650 DN42VC650 SW46VC1200 DW46VC1200 15.250 (387.4)
SW52VC1200
14.625 (371.5)
DW52VC1200
15.750 (400.0)
SW51VC1600
18.875 (479.4)
DW51VC1600
20.000
(508.0)
SW60VC1600 18.750 (476.3) DW60VC1600 20.375 (517.5)
SW66VC1600 20.500 (520.7) DW66VC1600 22.000 (558.8)
SW76VC1600
Contact Factory
DW76VC1600
20.375 (517.5)
SW76VC2000
DW76VC2000
24.374 (619.1)