Fully automatic coffee machine, espresso maker, or French press. However the coffee is prepared, moving components are everywhere. Linear plain bearings for lowering the coffee outlet, gears for transporting the beans, lead screws and nuts for building up pressure in the brewing unit.
The sensitive installation positions require lubrication-free and sometimes food-compatible components that also work with little maintenance. They are also compact, move smoothly, last a long time, and do not rattle.