Three-piece Hirth Coupling

1.In the normal state, the three pieces of the Hirth Coupling mesh with each other.

2.When in operation, the moving disengagement tooth (lower disengagement tooth) is disengaged.

3.After the moving disengagement tooth (lower disengagement tooth) is disengaged, the rotating engagement tooth (upper internal engagement tooth) rotates to a specified angle, while the fixed engagement tooth (upper external engagement tooth) remains stationary.

4.After rotating to the specified angle, the moving disengagement tooth (lower disengagement tooth) re-engages.