HAIRSPRINGS
The final step
is done by hand
Often described as the beating heart of the mechanical
watch, the hairspring is a spiral spring attached to the
balance wheel. It is the most crucial component when it
comes to determining the accuracy of a watch.
0.1μm =
1/10,000mm
The hairspring is made by drawing, rolling and flattening metal
wire. Since timekeeping accuracy depends upon achieving
precisely the right thickness, temperature and humidity must
be kept at constant levels throughout the manufacturing
process to keep tolerances
under 0.1 micron. The process is so
technically challenging that only a handful of watchmakers
worldwide can make their own hairsprings.
At MIYOTA, we spend a great deal of time and care making our
hairsprings, all under the most rigorous quality-management regime.
Only a select group of highly experienced
specialist craftspeople are allowed to handle the
final step of the process, the shaping of the
terminal curve. Combining human skill and
machine capabilities like this is what enables us
to produce hairsprings of such high precision
and quality levels.
HAIRSPRINGS
SCREWS
GEARS
COILS
MAIN PLATES
TOP