Vapaarullajärjestelmien
Vapaarullajärjestelmät, often translated as free-wheeling systems or freewheel mechanisms, are devices that allow a driven shaft to rotate freely in one direction while engaging and transmitting torque in the opposite direction. This unidirectional engagement is the core principle behind their operation. They are a type of clutch that automatically disengages when the driven member rotates faster than the driving member, and engages when the driving member rotates faster or is stationary.
The most common application of vapaarullajärjestelmät is found in bicycles, specifically in the rear hub, allowing
Beyond bicycles, vapaarullajärjestelmät have various industrial and automotive applications. They are used in conveyor systems to