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Table 3 Parameters of gear sample

From: Life Distribution Transformation Model of Planetary Gear System

Parameters Values Parameters Values
Normal modulus (mm) 3.7 Root radius (mm) 2
Number of teeth 27 Root roughness (μm) Rz = 10
Pressure angle (°) 20 ISO quality grade 6
Helix angle (°) 26 Material 20CrMnTi
Face width (mm) 20 Case depth (mm) 0.8 ± 0.13
Tooth thickness (mm) 6.6 Surface hardness HRC59–63
Base pitch (mm) 11.8 Core hardness HRC35–48
Modification coefficient 0.1 Precision machining Grinding