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Table 2 System parameters and stress calculation results

From: Life Distribution Transformation Model of Planetary Gear System

Parameters Sun gear Planet gear Ring gear
Normal modulus (mm) 1 1 1
Number of teeth 51 21 93
Pressure angle (°) 20 20 20
Helix angle (°) 26 26 26
Face width (mm) 22 21.5 22
Tooth thickness (mm) 1.49 1.55 1.57
Profile shift coefficient −0.1 0 0
Root fillet radius (mm) 0.41 0.42 0.15
Root roughness (μm) Rz = 10 Rz = 10 Rz = 10
ISO quality grade 6 6 6
Material 20CrMnTi 20CrMnTi 20CrMnTi
Root stress (MPa) 388 362 420