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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