Mechanical Failure Rates for Non-Electronic Reliability
241
Table D.5 continued
Component or part
Upper extreme Mean tG/106 Lower extreme
Blowers, vane, axial
0.005 hr
0.0025 hr
0.001 hr
Brake, assembly
0.020 hr
Brushes, rotary device
0.01 hr
0.003 hr
0.001 hr
Buckets, turbine wheel
0.0065 hr
Buzzers
1.0 cycle
0.1 cycle
0.01 cycle,
0.0025 hr
0.001 hr
0.0005 hr
Cameras (slit)
0.002 hr
0.001 hr
0.0005 hr
Cams
100.0 cycles
1.0 cycle
0.1 cycle
Capacitor, ceramic
0.02 hr
0.016 hr
0.002 hr
Capacitor, ceramic variable
0.016 hr
Capacitors, electrolytic
0.012 hr
0.01 hr
0.004 hr
Cells, solar
0.02 hr
0.003 hr
0.0005 hr
Choppers
0.008 hr
0.005 hr
0.0012 hr
Chopper, synchro
0.026 hr
Chopper, microsignal
0.004 hr
Circuit breakers
0.05 cycle
0.035 cycle
0.01 cycle
Clutch, high-speed backstopping
0.019 hr
Clutch, precision indexing
80.0 cycles
Coatings, vitrous ceramic
0.0006 hr
0.00045 hr
0.0001 hr
Commutators
0.014 hr
0.006 hr
0.001 hr
Compressors (lub. bearings)
0.02 hr
0.007 hr
0.002 hr
Compressor diaphragm (oil-free)
0.003 hr
Connector, electrical
0.024 hr
0.019 hr
0.012 hr,
0.0005 cycle
0.0001 cycle 0.00005 cycle
Contactors
0.1 cycle
0.05 cycle
0.02 cycle
Contactors, power
0.05 cycle
Contractor, rotary power
0.1 cycle
Control package, pneumatic
0.02 hr
Converter, analog
0.004 hr
0.003 hr
0.002 hr
Counters to digital
0.6 cycle
0.003 cycle
0.1 cycle
Counters, electronic
100.0 cycles
60.0 cycles
30.0 cycles
Counter, Geiger
0.0034 hr
Counter, heavy-duty
0.2 cycle
Counter, magnetic
400.0 cycles
Cylinder, piston 250 psi, air
50.0 cycles
30.0 cycles
12.0 cycles
Delay lines, fixed
0.025 hr
0.005 hr
0.01 hr
Delay lines, variable
0.010 hr
Detection mechanism, star
wheel
0.10 cycle
Detectors, micrometeorite
0.05 hr
0.01 hr
0.001 hr