MIL-PRF-62494D(AT)
TABLE I. Damping resistance.
Performance data sinusoidal
motion 3-inch (7.62 cm) stroke
Resistance at midstroke
Cycling rate
Compression
Rebound
(cpm) 1/
pounds
(kg)
pounds
(kg)
47-53
3300-6800
(1497 to 3084)
2400-3300
(1089 to 1497)
94-106
5100-7100
(2313 to 3220)
2500-3600
(1134 to 1633)
141-159
5200-7300
(2359 to 3311)
2700-3900
(1225 to 1769)
282-318
5600-8200
(2540 to 3719)
3100-4700
(1406 to 2132)
564-636
6400-11 100 (2903 to 5035)
3400-9400
(1542 to 4264)
1/ cpm = cycles per minute
NOTES:
1. Resistance at first 10 percent of each stroke shall be at least 1650 pounds (lb)
(748 kilograms (kg)) in compression and 1200 lb (544 kg) in rebound at all
cycling speeds noted above.
2. Limits apply for shock absorber temperature within ranges of 50° to 100°F
(10° to 38°C) and 350° to 400°F (177° to 204°C).
3.3.2 Compression and tension loading. The shock absorber shall be capable of
withstanding a 40 000 lb (18 144 kg) compressive force and a 40 000 lb tensile force, applied
through the self-aligning bearings, without affecting the damping capability (see 4.4.2).
3.3.3 Endurance. The shock absorber shall be capable of operating satisfactorily for
300 000 feet (ft) (91 440 meter (m)) of piston travel at a standard operational temperature range
of 300° to 400°F (149° to 204°C). The shock absorber shall be capable of withstanding piston
velocities of 100 inches per second (2.54 meter per second (m/s)) at mid-stroke in compression
and rebound. There shall be minimal loss of damping, fluid and performance (see 4.4.3).
3.3.4 Bearing rotational torque. The torque required to rotate the upper, spherical inner
race at 3 to 5 revolutions per minute (rpm) shall be from 12 to 100 foot-pounds (ft-lb),
(16.7 to 135.6 Newton-meter (N-m)). The torque required to rotate the lower spherical inner
race at 3 to 5 rpm shall be from 8 to 150 ft-lb (10.8 to 203 N-m) (see 4.4.4).
3.3.5 Axial load. The self-aligning bearing shall not move from its installed location nor
shall it be permanently deformed when an axial load of 2000 lb (907 kg) is applied in either
direction to the inner bearing shell (see 4.4.5).
6
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business