The JCB AJ48D is a diesel-powered aerial lift designed for elevated access in construction, maintenance, and industrial applications. It is part of JCB's articulated boom lift range and is used for reaching work areas at height with horizontal outreach and up-and-over capability. The AJ48D typically features four-wheel drive, rough-terrain capability, and a platform designed for operator access and tool handling. Common specifications include a working height of around 48 feet, articulated boom configuration, and diesel engine power. The model is used on job sites requiring mobility, lift performance, and access over obstacles.