Clock Springs

Clock springs, also known as power springs, are the oldest form of flat spring and the most common type in use today. Clock springs are produced by tightly winding tempered spring material on an arbor and attaching the free end to a metal or plastic case.

The spring’s natural tendency to expand imparts a moment to either the arbor or case, producing usable torque. The torque generated is cumulative so that the force increases as the spring is wound tighter and decreases as it unwinds.
Mechanical watches need precise mainsprings to provide accurate timekeeping. American Precision Spring is a leading clock springs supplier due to our precision equipment, professional engineering team and exacting quality control measures. Let us become your best custom clock spring provider.