Most carrier mounted cranes have their greatest capacity___________.

Most carrier mounted cranes have their greatest capacity___________.

• A. Over the rear
• B. Over the front
• C. Over the left
• D. Over the right

Answer: (A)

Stability of a carrier-mounted crane hinges on keeping the combined center of gravity inside the truck’s wheelbase, with the crane’s counterweight providing a stabilizing moment. The counterweight is typically at the rear, so when the load is positioned over the rear of the vehicle, the rear counterweight and the chassis work together to resist tipping, allowing a greater lifting capacity at that orientation. Lifting over the front moves the load’s moment in a direction where the rear counterweight offers less stabilizing effect, reducing capacity. So, the greatest capacity is achieved when the load is over the rear. Always confirm with the crane’s rated capacity chart for the specific radius and height.

Stability of a carrier-mounted crane hinges on keeping the combined center of gravity inside the truck’s wheelbase, with the crane’s counterweight providing a stabilizing moment. The counterweight is typically at the rear, so when the load is positioned over the rear of the vehicle, the rear counterweight and the chassis work together to resist tipping, allowing a greater lifting capacity at that orientation. Lifting over the front moves the load’s moment in a direction where the rear counterweight offers less stabilizing effect, reducing capacity. So, the greatest capacity is achieved when the load is over the rear. Always confirm with the crane’s rated capacity chart for the specific radius and height.