Abstract: An apparatus and method are disclosed for transmitting drive between a first and at least one further component. The apparatus includes an elongate shaft element extending along a respective longitudinal axis and comprising a first and further shaft region, each of which comprises a substantially cylindrical outer surface extending from a respective first and further side of a cam body region. The apparatus also includes a fluid communication pathway extending within the shaft element from a first end region of the shaft element to at least one outlet aperture in an outer surface of the first cylindrical region.