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Table 1 Geometric, operating parameters of double involute gears and performance of lubricating oil

From: Oil Film Stiffness of Double Involute Gears Based on Thermal EHL Theory

Parameter

Value

Number of teeth

23/32

Normal modulus mn (mm)

3

Normal pressure angle αn (o)

20

Tooth width B (mm)

50

Helical angle β (o)

16o57'42''

Specific heat capacity (J/kg·K)

ca=cb=460

Modulus of elasticity (GPa)

Ea=Eb=210

Density (kg/m3)

ρa=ρb=7850

Input torque Tp (N·m)

160

Rotating speed of pinion n1 (r/min)

2000

Thermal conductivity of fluid kf(W/(m·K))

0.14

Density of fluid ρf (kg/m3)

860

Specific heat of lubricant cf (J/kg·K)

2290

Lubricant ambient temperature T0 (K)

313

Initial viscosity of lubricant η0 (Pa·s)

0.08

Viscosity-temperature coefficient βf (K−1)

0.04

Eyring stress τ0 (MPa)

1.2×107