Table 3: Component Importance for hours.

ComponentBirnbaum importanceRankBarlow-Proschan importanceRankTime integral importanceRankNatvig importanceRankWu importanceRankIntegrated importanceRank

CNC control system0.040160.111561.000080.1160611.84 × 10−452.2146 × 10−56
Tool carry0.052420.135541.964810.1683111.14 × 10412.9116 × 10−52
Power supply and electrical system0.053710.148011.950120.1640211.45 × 10−422.9833 × 1051
Chip-removal system0.050730.140531.796240.1494411.62 × 10−442.8137 × 10−53
Lubrication system0.037470.106271.447460.0907712.21 × 10−472.0562 × 10−57
Hydraulic system0.026880.080581.598450.0205812.58 × 10−481.4645 × 10−58
Main transmission system0.047450.133051.246470.1326511.92 × 10−462.6193 × 10−55
Clamp system0.049840.144721.889930.1584311.50 × 10−432.7659 × 10−54