Maintenance Strategy Based on Reliability Analysis and FMEA: A Case Study for Hydraulic Cylinders of Traditional Excavators with ERRS

Table 4

The failure frequency and reliability of the HC from HE without ERRS.

Ti [10^3h]	Δni	F(t)	R(t)
0～0.300	75	0.2788	0.7212
0.301～0.600	44	0.4424	0.5576
0.601～0.900	45	0.6097	0.3903
0.901～1.200	33	0.7323	0.2677
1.201～1.500	27	0.8327	0.1673
1.501～1.800	29	0.9405	0.0595
1.801～2.100	16	1.0000	0.0000