Reliability Modeling and Estimation of the Gear System

Table 5

Parameters of gears.

	Sun	Planetary	Ring	Gear-1	Gear-2	Gear-3	Gear-4
Tooth Numbers	30	57	144	81	25	46	29
Normal module (mm)	12	12	12	14	14	22	22
Pressure angle (degree)	20	20	20	20	20	20	20
Helix angle (degree)	15	15	15	15	15	15	15
Face width (mm)	220	220	220	110	110	50	50
Profile shift coefficient	-0.33	0.38	-0.43	0.52	0.44	0.36	-0.23