For those who may have forgotten, here is a quick refresh based on our 5401 movement in the course of assembly, and the six stages of the kinematic chain.
We illustrate this with our ultra-thin automatic micro-rotor Seed VMF 5401 movement
1. Energy source
Turning the winding crown or the wrist movements of the wearer provide the energy needed to operate the automatic mechanical watch..
Photo: automatic rotor
2. Energy store
A spring wound in the barrel stores the energy for the operation of the mechanical watch.
3. Counting, transmission
A set of gears brings energy to the escapement.
Photo: gear train
The escapement transmits the energy to the balance, while counting its oscillations.
The balance and its spring determine the accuracy of the mechanical watch.
Photo: spiral balance
The speed of rotation of specific gears drives each hand at the correct pace.