Reliability Modeling and Estimation of the Gear System

Table 1

Parameters of gear.

Number of teeth	25
Module (mm)	4
Pressure angle (degree)	20
Tooth surface width (mm)	25
Radius of tooth root fillet (mm)	1.52
Precision grade	6
Material	20CrMnTi
Tooth surface hardness	HRC 58-64
Gear core hardness	HRC 32-45