intershaft
An intershaft is a mechanical component commonly found in automotive transmissions, particularly in multi-speed gearboxes such as automatic transmissions or certain manual transmissions. It serves as an intermediate shaft that facilitates the transfer of power between the input and output shafts, enabling the selection of different gear ratios.
In automatic transmissions, the intershaft is typically part of the planetary gearset, where it meshes with
In some manual transmissions, an intershaft may be used in dual-clutch or continuously variable transmissions (CVTs)
The intershaft is usually constructed from high-strength steel to withstand the mechanical stresses of continuous operation.
While the term "intershaft" is most commonly associated with automotive applications, similar components may appear in