The Complete Guide to Watch Movement Impulse Pin: How It Transfers Energy

The Energy Transfer

The impulse pin transfers energy from the escapement to the balance wheel in a mechanical watch. Here is how it works.

How the Impulse Pin Works

1. Escape wheel pushes the pallet fork
2. Pallet fork pushes the impulse pin
3. Impulse pin transmits energy to the balance wheel
4. Balance wheel swings, storing energy in the hairspring

Impulse Pin Materials

Frequently Asked Questions

Can the impulse pin break?
Extremely rare. The impulse pin is designed to last the lifetime of the movement.