Mechanical Failure Rates for Non-Electronic Reliability
235
Table D.3 continued
Upper
2~/10 6 hr
Lower
Component or part
extreme
mean
extreme
Cabinet assemblies
0.330
0.03
0.003
Cable assemblies
0.170
0.02
0.002
Cams
0.004
0.002
0.00 l
Circuit breakers
0.04
0.1375
0.045
Circuit breakers, thermal
0.50
0.3
0.25
Clamshell, plug-in assemblies
0.70
0.175
0.10
Clutches
1.1
0.04
0.06
Clutches, magnetic
0.93
0.6
0.45
Clutches, slip
0.94
0.3
0.07
Connectors, electrical
0.47/pin
0.2/pin
0.03/pin
Connectors, AN type
0.385/pin
0.2125/pin
0.04/pin
Counters
5.25
4.2
3.5
Counterweights, large
0.545
0.3375
0.13
Counterweights, small
0.03
0.0125
0.005
Coolers
7.0
4.20
1.40
Couplers, directional
3.21
1.6375
0.065
Couplers, rotary
0.049
0.025
0.001
Couplings, flexible
1.348
0.6875
0.027
Couplings, rigid
0.049
0.025
0.001
Covers, bore-sight adapter
0.347
0.1837
0.02
Covers, dust
0.01
0.006
0.002
Covers, protective
0.061
0.038
0.015
Crankcases
1.8
0.9
0.10
Cylinders
0.81
0.007
0.005
Cylinders, hydraulic
0.12
0.008
0.005
Cylinders, pneumatic
0.013
0.004
0.002
Delay lines, fixed
0.25
0.1
0.08
Delay lines, variable
4.62
3.00
0.22
Diaphragms
9.0
6.00
0.10
Differentials
0.168
0.04
0.012
Diodes
1.47
0.2
0.16
Disconnects, quick
2.1/pin
0.4/pin
0.09/pin
Drives, belt
15.0
3.875
0.142
Drives, direct
5.26
0.4
0.33
Drives, constant-speed, pneumatic
6.2
2.8
0.3
Driving-wheel assemblies
0.1
0.025
0.02
Ducts, blower
1.3
0.5125
0.21
Ducts, magnetron
3.0
0.075
0.04
Dynamotors
5.46
2.8
1.15
Fans, exhaust
9.0
0.225
0.21
Filters, electrical
3.00
0.345
0.140