There are various types of overhead cranes with many being highly specialized, but the great majority of installations fall into one of four categories: This event was put on by Gatorade and NBA. Gatorade Training Center The Gym in Houston Texas. What specifications, codes or local regulations are applicable?.Any special features? Cabs, walkways, horns, lights?.What type of control? Pendant from the hoist, separate track or remote control?.If motorized, how fast? Single or dual speeds? Variable frequency drives.How is the crane powered? All motorized push-pull, hand geared, or a combination?.Is the bridge going to be indoors or outdoors?.Is the bridge going to be supported by the building, self-supported, or both?.Overhead crane test questions and answers 12.2 Overhead crane manufacturers in the USA.12.1 Overhead Crane Test Questions and Answers.10 Overhead bridge crane specifications.1 Overhead crane test questions and answers.Many factors are taken into consideration which includes: Selecting the right type of overhead crane is critical to streamline workflow and maximize productivity. The design of overhead cranes varies widely according to their major operational specifications such as type of motion of the crane structure, weight, and type of the load, location of the crane, geometric features, operating regimes, and environmental conditions. The third is the gantry or bridge motion (long travel), which allows the entire crane to be moved along the working area.Ĭranes are distinguished from hoists, which can lift objects but cannot move them sideways.The second is the trolley (cross travel), which allows the hoist to be positioned directly above the material for placement.The first motion is the hoist, which raises and lowers the material.An overhead crane usually consists of three separate motions: A crane is a machine that is capable of raising and lowering heavy objects and moving the objects from one place to other.