The Complete Guide to Watch Movement Mainspring: How It Stores and Releases Energy
Author: Funny Items
Release time: 2026-08-20 19:14:23
View number: 13
The Power Source
The mainspring stores energy in a mechanical watch. Here is how it works.
How the Mainspring Works
- Mainspring is coiled tightly inside the barrel
- Winding (by rotor or crown) tightens the spring
- Stored energy is released slowly through the gear train
- Spring unwinds as energy is consumed
Mainspring Types
| Type | Material | Power Reserve |
|---|---|---|
| Standard | Steel alloy | 40-50 hours |
| Extended | Nivaflex | 70-80 hours |
| Double | Multiple springs | 100+ hours |
Frequently Asked Questions
Can I over-wind the mainspring?
Modern automatic watches have a slip clutch that prevents over-winding. Wind as much as you want.