TABLE
4
- MAXIMUM SAFE OPERATING SPEEDS
Size (Narrow)
Maximum RPM
11.5VC500
1800
14VC500
1500
16VC600 1400
20VC6OO
1200
24VC650
1050
30
l
3.1
3.1.1
3.1.2
VC 5000
Size (Narrow) Maximum RPM
28VC650
1000
33VC650
35VC650
900
37VC650
800
42VC650
OPERATION
Warning:
Exceeding the operating limits
described in this section may result in
personal injury or equipment damage.
Torque, RPM and Pressure Limits
The developed torque is directly proportional
to the applied air pressure. If the developed
torque seems inadequate, check for oil,
grease or dust contamination.
Caution:
Maximum applied air pressure is 125
psig (8.5 bar). Operation at pressures
exceeding 125 psig may result in
damage to the element. Consult the
factory if operation at pressures
greater than 125 psig is desired.
Caution:
The non-asbestos friction material
used in Airflex VC units may not
develop rated torque initially, as a
short “wear in” period is required. It is
very important that clutch or brake
operation be monitored closely to
prevent excessive heat generation
from slippage.
Maximum safe operating speeds are shown on
Table
4.
Danger:
Do not exceed the operating speeds
shown on Table 4. Operation at
speeds greater than allowable will
result in permanent damage to the
element, personal injury or death.
Size (Wide)
Maximum RPM
14VC1000
1800
16VC1000 1400
20VC1000
1300
24VCl000
1250
28VC1000 1100
32VCl000
1050
38VC1200
740
Size (Wide)
42VC1200
46VC1200
52VC1200
51VC1600
60VC1600
66VC1600
Maximum RPM
670
550
550
520
520
4.0 MAINTENANCE
Warning:
Only qualified personnel should main-
-
tain and repair these units. Faulty
workmanship may result in personal
injury or equipment damage.
Caution:
When replacing clutch or brake
components, use only genuine,
Airflex replacement parts.
41
l
Periodic Inspection
4.1.1
The following items may be inspected without
disassembly of the element:
4.1.1.1
Friction Shoe Assembly Lining Wear -
Check the lining thickness and compare to the
values shown on Table 5. If the linings have
worn to minimum allowable thickness or less,
they must be. replaced as a complete set.
Caution:
Operation with friction material worn
to less than minimum allowable thick-
ness will result in damage to the
drum.
Note: A wear indicating groove (see figure
below) is provided on each end of the friction
block. The maximum wear point, which coin-
cides with the values shown on Table 5, is at
the bottom of the groove.
II
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G
Copyright Eaton Corp., 1989. All rights reserved.
Revised: July, 1995 (PDF format)
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