Table 2 Macro-geometry of gear pairs.

From: Effects of manufacturing errors of gear macro-geometry on gear performance

Description

Symbol

Gear pair 1

Gear pair 2

Normal module (mm)

\(m_{n}\)

2.5

3.0

Normal pressure angle (°)

\(\alpha_{n}\)

20

22.5

Helix angle (°)

\(\beta\)

5

15

Number of teeth of pinion

\(z_{1}\)

35

27

Number of teeth of wheel

\(z_{2}\)

47

36

Face width (mm)

b

20

20

Profile shift coefficient of pinion

\(x_{n}^{*}\)

ā€‰āˆ’ā€‰0.451

0.370

Center distance (mm)

\(a_{w}\)

101

101