The helix angle for single helical gears ranges from

10° to 15°

15° to 25°

20° to 35°

35° to 50°

2.89 kN

8.29 kN

9.28 kN

28.9 kN

Equal to

One-half

8.29 kN

Four times

On their point of contact

At the centre of curvature

At the center of circle

At the pin joint

Its temperature increases but volume decreases

Its volume increases but temperature decreases

Both temperature and volume increases

Both temperature and volume decreases