MIL-DTL-5513D
TABLE IX. Swivel loading forces. 1/ 2/
Load
Dash size
Pounds + 10% Kg
4
1.5
0.68
5
2.0
0.91
6
3.0
1.36
8
4.0
1.81
10
6.0
2.72
12
8.0
3.6.
16
10.0
4.54
20
12.0
5.44
1/ Metric equivalents are given for
information only.
2/ Values given are for style a plane
swivels. Double the lead for style b
misalignment swivels.
4.7.6.2 Icing. The following details shall apply:
a. With the test specimen stabilized in a test chamber at 35° ± 2°F (1.7° ±1.1°C) and so oriented
that the axis of rotation is horizontal, fully submerge the specimen in a mixture of water and ice
at 32°F (0°C) for one minute.
b. Remove the specimen from the water and decrease the chamber temperature to 15° ± 5°F
(-9.4° ± 2.7°C) within five minutes and maintain this temperature for 30 minutes with no
hydraulic pressure or motion applied to the specimen.
c. Perform the cold temperature operation test see 4.7.10 except that the temperature shall remain
at 15° ± 5°F (-9.4° ± 2.7°C) and the soak period shall be one hour in lieu of 24 hours.
4.7.6.3 Failure criteria. There shall be no evidence of malfunctioning or leakage greater than one
drop in 100 cycles.
4.7.7 Swiveling torque (see 3.4.6). Swivels when subjected to swiveling torque shall meet the
requirements of 3.4.6. The following details shall apply:
a. After applying the rated internal operating pressure for a period of five minutes, increasing
torque shall be applied gradually to obtain swiveling motion.
b. The torque required to swivel and to compensate for angular realignment within the limits of
such action of the swivel joint shall be noted and shall not exceed the value specified in table
IV.
4.7.8 Swiveling torque at elevated temperature (see 3.4.7). Swivels when subjected to swiveling
torque at elevated temperatures shall meet the requirements of 3.4.7. The following details shall apply:
a. The torque test specified in 4.7.7 shall be repeated with both the joint and hydraulic fluid at the
applicable temperature listed in table IV.
b The torque shall not exceed the values specified in table IV.
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