A crawler crane is generally used to lift and transfer heavy loads. The different components of the crane are called the housing, hoist, body, side frame, wire rope, and bundle. 

You need not worry too much about the terminology at this point as it is only used in the heavy freight industry to represent a specific mode of transportation. If you are interested in buying Manitowoc Crawler cranes then you can read this article.

These cranes are different from truck cranes or hydraulic cranes; The crawler crane has no outriggers.  A crane boom or arm is basically a lattice structure for a crane. 

The frame structure is more volatile than the hydraulic boom crane and the outcome is a better load to radius ratio. 

What we mean by that is that with a longer working range you can lift more at a greater operating radius than a hydraulic crane of the same capacity. This is accomplished because the lower boom pressure affects the overall ability of this type of crane.

This is a fact in almost all cases as it requires assembly. Even manufacturers who claim to sell self-built cranes need practical help. 

Auxiliary cranes are usually smaller cranes used for loading and unloading. In addition, the installation of larger cranes was significantly accelerated. 

The crawler crane is not moved fully assembled. They are just too huge for the roads. That’s why they are delivered in controllable pieces and assembled on site.