Watch ServiceTypes.mainspring-replacement.name in San Francisco
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Watch repair in San Francisco — FAQ
What are the signs that a watch needs a mainspring replacement?
Common signs include a watch that will not run even after being wound, or a watch that stops shortly after winding. You may also notice a sudden drop in timekeeping accuracy or a winding crown that spins without any resistance.
Why does a watch mainspring break or weaken?
Mainsprings are under constant high tension, which causes metal fatigue over years of regular use. In older timepieces, moisture or dried lubricants can also cause the steel spring to corrode and eventually snap.
Is it safe to replace a watch mainspring yourself?
It is not recommended, as mainsprings store a significant amount of kinetic energy and can cause injury or damage the watch movement if released suddenly. Specialized tools like a mainspring winder are required to perform the replacement safely.
How often should a watch mainspring be replaced?
A mainspring is typically replaced during a routine complete overhaul of a mechanical watch, which is recommended every three to five years. Replacing it during servicing prevents sudden breakage that could damage other delicate movement parts.
Can an automatic watch have its mainspring replaced?
Yes, automatic watches also use mainsprings, though they feature a slipping bridle on the outer end to prevent overwinding. Professional watchmakers can source and install the correct replacement spring for your specific automatic movement caliber.