TM 5-3895-374-24-2
Sure-Flex Installation Instructions (continued)
Different coupling sleeves require different degrees of alignment precision. Locate the alignment values for your sleeve
size and type in Table 2 below.
(5) Check parallel alignment by placing a straightedge
across the two coupling flanges and measuring the
maximum offset at various points around the periphery of
the coupling without rotating the coupling. If the maximum
offset exceeds the figure shown under "Parallel" in Table 2,
realign the shafts.
(6) Check angular alignment with a micrometer or
caliper. Measure from the outside of one flange to the
outside of the other at intervals around the periphery of the
coupling.
Determine
the
maximum
and
minimum
dimensions without rotating the coupling. The difference
between the maximum and minimum must not exceed the
figure given under "Angular" in Table 2. If a correction is
necessary, be sure to recheck the parallel alignment.
TABLE 2 - MAXIMUM RPM AND ALLOWABLE MISALIGNMENT
(Dimensions in inches)
Sleeve
Maximum
Types JE, JN, JES, JNS, E & N
Type H & HS
Size
RPM
Parallel
Angular
G1
Parallel
Angular
G1
3
9200
010
035
1.188
....
....
....
4
7600
010
043
1.500
....
....
....
5
7600
015
056
1.938
....
....
....
6
6000
015
070
2.375(1)
010
016
2.375
7
5250
020
081
2.563
012
020
2.563
8
4500
020
094
2.938
015
025
2.938
9
3750
025
109
3.500
017
028
3.500
10
3600
025
128
4.063
020
032
4.063
11’
3600
032
151
4.875
022
037
4.875
12
2800
032
175
5.688
025
042
5.688
13
2400
040
195
6.625
030
050
6.625
14
2200
045
242
7.750
035
060
7.750
16
1500
062
330
10.250
....
....
....
Note: Values shown above apply if the actual torque transmitted is more than 1/4 the coupling rating. For lesser
torque, reduce the above values by 1/2.
* Type H and HS sleeves should not be used as direct replacements for EPDM or Neoprene sleeves.
(1) Value when using 6J flanges is 2.125.
(7)
If the coupling employs the two-piece sleeve with the wire ring, force the ring into its groove in the center of the
sleeve. It may be necessary to pry the ring into position with a blunt screwdriver.
(8)
Install coupling guards per OSHA requirements.
CAUTION: Coupling sleeves may be thrown from the coupling assembly with substantial force when the coupling
is subjected to a severe shock load or abuse.
T. B. WOOD'S SONS COMPANY • Chambersburg, PA 17201
T. B. WOOD'S CANADA LTD. • Stratford, Ontario NSA 6V6
FORM 741E 5-92
Printed in U.
(page 3-1331)
