In some truck-mounted cranes, what area has no lifting capacity?

In truck-mounted cranes, the front area often has no lifting capacity due to the design and structural limitations of the crane’s chassis and its forward-mounted components. This space is generally occupied by the crane's operator cab and other essential structures that can hinder the crane's stability and lifting capability when loads are applied in this direction.

When a load is lifted towards the front of the crane, it can create a significant load moment, which may lead to tipping, especially since the weight distribution can become unbalanced. Thus, manufacturers intentionally limit lifting capacity in this area to ensure safety and maintain the structural integrity of the crane. In contrast, the design of truck-mounted cranes allows for lifting capacities on the rear and sides where stability can be better managed through the center of gravity and counterbalancing systems.