Crawler cranes usually have greater lifting capacity over which area?

Crawler cranes are designed with a configuration that allows for a greater lifting capacity, particularly towards the ends of the crane's undercarriage. This is due to the balanced weight distribution and stability that the long tracks provide, which prevent tipping and allow for higher moment loads at the crane's extremities.

When lifting from the ends, the crane benefits from the leverage created by its design, resulting in enhanced lifting capabilities. This is critical in lifting operations, as it ensures that loads are handled safely and efficiently without compromising stability. The ability to lift greater loads at the ends is particularly useful in applications where it may not be practical to lift heavier loads directly from the center of the crane.

As for the other areas assessed, lifting capacity from the front, side, and rear does not benefit from the same level of leverage or stability as that from the ends, leading to lesser capacities in those directions. Therefore, understanding the layout and operating characteristics of crawler cranes is essential for effective and safe operation in various lifting scenarios.